fix: prevent TOCTOU race condition on issue/PR body edits (#710 )

Add trigger-time validation for issue/PR body content to prevent attackers from exploiting a race condition where they edit the body between when an authorized user triggers @claude and when Claude processes the request. The existing filterCommentsToTriggerTime() already protected comments - this extends the same pattern to the main issue/PR body via isBodySafeToUse(). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude <noreply@anthropic.com>
chore: bump Claude Code version to 2.0.55
2026-01-23 06:54:13 +08:00 · 2025-12-01 07:59:39 -08:00 · 2025-11-27 00:01:22 +00:00 · 2025-11-24 20:57:33 -05:00 · 2025-11-24 19:03:53 -05:00 · 2025-11-21 16:52:35 -08:00
21 changed files with 1314 additions and 249 deletions
--- a/.github/workflows/claude-review.yml
+++ b/.github/workflows/claude-review.yml
@@ -2,7 +2,7 @@ name: PR Review

 on:
  pull_request:
-    types: [opened, synchronize, ready_for_review, reopened]
+    types: [opened]

 jobs:
  review:
--- a/.github/workflows/test-structured-output.yml
+++ b/.github/workflows/test-structured-output.yml
@@ -0,0 +1,307 @@
+name: Test Structured Outputs
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  test-basic-types:
+    name: Test Basic Type Conversions
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+
+      - name: Test with explicit values
+        id: test
+        uses: ./base-action
+        with:
+          prompt: |
+            Run this command: echo "test"
+
+            Then return EXACTLY these values:
+            - text_field: "hello"
+            - number_field: 42
+            - boolean_true: true
+            - boolean_false: false
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          claude_args: |
+            --allowedTools Bash
+            --json-schema '{"type":"object","properties":{"text_field":{"type":"string"},"number_field":{"type":"number"},"boolean_true":{"type":"boolean"},"boolean_false":{"type":"boolean"}},"required":["text_field","number_field","boolean_true","boolean_false"]}'
+
+      - name: Verify outputs
+        run: |
+          # Parse the structured_output JSON
+          OUTPUT='${{ steps.test.outputs.structured_output }}'
+
+          # Test string pass-through
+          TEXT_FIELD=$(echo "$OUTPUT" | jq -r '.text_field')
+          if [ "$TEXT_FIELD" != "hello" ]; then
+            echo "❌ String: expected 'hello', got '$TEXT_FIELD'"
+            exit 1
+          fi
+
+          # Test number → string conversion
+          NUMBER_FIELD=$(echo "$OUTPUT" | jq -r '.number_field')
+          if [ "$NUMBER_FIELD" != "42" ]; then
+            echo "❌ Number: expected '42', got '$NUMBER_FIELD'"
+            exit 1
+          fi
+
+          # Test boolean → "true" conversion
+          BOOLEAN_TRUE=$(echo "$OUTPUT" | jq -r '.boolean_true')
+          if [ "$BOOLEAN_TRUE" != "true" ]; then
+            echo "❌ Boolean true: expected 'true', got '$BOOLEAN_TRUE'"
+            exit 1
+          fi
+
+          # Test boolean → "false" conversion
+          BOOLEAN_FALSE=$(echo "$OUTPUT" | jq -r '.boolean_false')
+          if [ "$BOOLEAN_FALSE" != "false" ]; then
+            echo "❌ Boolean false: expected 'false', got '$BOOLEAN_FALSE'"
+            exit 1
+          fi
+
+          echo "✅ All basic type conversions correct"
+
+  test-complex-types:
+    name: Test Arrays and Objects
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+
+      - name: Test complex types
+        id: test
+        uses: ./base-action
+        with:
+          prompt: |
+            Run: echo "ready"
+
+            Return EXACTLY:
+            - items: ["apple", "banana", "cherry"]
+            - config: {"key": "value", "count": 3}
+            - empty_array: []
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          claude_args: |
+            --allowedTools Bash
+            --json-schema '{"type":"object","properties":{"items":{"type":"array","items":{"type":"string"}},"config":{"type":"object"},"empty_array":{"type":"array"}},"required":["items","config","empty_array"]}'
+
+      - name: Verify JSON stringification
+        run: |
+          # Parse the structured_output JSON
+          OUTPUT='${{ steps.test.outputs.structured_output }}'
+
+          # Arrays should be JSON stringified
+          if ! echo "$OUTPUT" | jq -e '.items | length == 3' > /dev/null; then
+            echo "❌ Array not properly formatted"
+            echo "$OUTPUT" | jq '.items'
+            exit 1
+          fi
+
+          # Objects should be JSON stringified
+          if ! echo "$OUTPUT" | jq -e '.config.key == "value"' > /dev/null; then
+            echo "❌ Object not properly formatted"
+            echo "$OUTPUT" | jq '.config'
+            exit 1
+          fi
+
+          # Empty arrays should work
+          if ! echo "$OUTPUT" | jq -e '.empty_array | length == 0' > /dev/null; then
+            echo "❌ Empty array not properly formatted"
+            echo "$OUTPUT" | jq '.empty_array'
+            exit 1
+          fi
+
+          echo "✅ All complex types handled correctly"
+
+  test-edge-cases:
+    name: Test Edge Cases
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+
+      - name: Test edge cases
+        id: test
+        uses: ./base-action
+        with:
+          prompt: |
+            Run: echo "test"
+
+            Return EXACTLY:
+            - zero: 0
+            - empty_string: ""
+            - negative: -5
+            - decimal: 3.14
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          claude_args: |
+            --allowedTools Bash
+            --json-schema '{"type":"object","properties":{"zero":{"type":"number"},"empty_string":{"type":"string"},"negative":{"type":"number"},"decimal":{"type":"number"}},"required":["zero","empty_string","negative","decimal"]}'
+
+      - name: Verify edge cases
+        run: |
+          # Parse the structured_output JSON
+          OUTPUT='${{ steps.test.outputs.structured_output }}'
+
+          # Zero should be "0", not empty or falsy
+          ZERO=$(echo "$OUTPUT" | jq -r '.zero')
+          if [ "$ZERO" != "0" ]; then
+            echo "❌ Zero: expected '0', got '$ZERO'"
+            exit 1
+          fi
+
+          # Empty string should be empty (not "null" or missing)
+          EMPTY_STRING=$(echo "$OUTPUT" | jq -r '.empty_string')
+          if [ "$EMPTY_STRING" != "" ]; then
+            echo "❌ Empty string: expected '', got '$EMPTY_STRING'"
+            exit 1
+          fi
+
+          # Negative numbers should work
+          NEGATIVE=$(echo "$OUTPUT" | jq -r '.negative')
+          if [ "$NEGATIVE" != "-5" ]; then
+            echo "❌ Negative: expected '-5', got '$NEGATIVE'"
+            exit 1
+          fi
+
+          # Decimals should preserve precision
+          DECIMAL=$(echo "$OUTPUT" | jq -r '.decimal')
+          if [ "$DECIMAL" != "3.14" ]; then
+            echo "❌ Decimal: expected '3.14', got '$DECIMAL'"
+            exit 1
+          fi
+
+          echo "✅ All edge cases handled correctly"
+
+  test-name-sanitization:
+    name: Test Output Name Sanitization
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+
+      - name: Test special characters in field names
+        id: test
+        uses: ./base-action
+        with:
+          prompt: |
+            Run: echo "test"
+            Return EXACTLY: {test-result: "passed", item_count: 10}
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          claude_args: |
+            --allowedTools Bash
+            --json-schema '{"type":"object","properties":{"test-result":{"type":"string"},"item_count":{"type":"number"}},"required":["test-result","item_count"]}'
+
+      - name: Verify sanitized names work
+        run: |
+          # Parse the structured_output JSON
+          OUTPUT='${{ steps.test.outputs.structured_output }}'
+
+          # Hyphens should be preserved in the JSON
+          TEST_RESULT=$(echo "$OUTPUT" | jq -r '.["test-result"]')
+          if [ "$TEST_RESULT" != "passed" ]; then
+            echo "❌ Hyphenated name failed: expected 'passed', got '$TEST_RESULT'"
+            exit 1
+          fi
+
+          # Underscores should work
+          ITEM_COUNT=$(echo "$OUTPUT" | jq -r '.item_count')
+          if [ "$ITEM_COUNT" != "10" ]; then
+            echo "❌ Underscore name failed: expected '10', got '$ITEM_COUNT'"
+            exit 1
+          fi
+
+          echo "✅ Name sanitization works"
+
+  test-execution-file-structure:
+    name: Test Execution File Format
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+
+      - name: Run with structured output
+        id: test
+        uses: ./base-action
+        with:
+          prompt: "Run: echo 'complete'. Return: {done: true}"
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          claude_args: |
+            --allowedTools Bash
+            --json-schema '{"type":"object","properties":{"done":{"type":"boolean"}},"required":["done"]}'
+
+      - name: Verify execution file contains structured_output
+        run: |
+          FILE="${{ steps.test.outputs.execution_file }}"
+
+          # Check file exists
+          if [ ! -f "$FILE" ]; then
+            echo "❌ Execution file missing"
+            exit 1
+          fi
+
+          # Check for structured_output field
+          if ! jq -e '.[] | select(.type == "result") | .structured_output' "$FILE" > /dev/null; then
+            echo "❌ No structured_output in execution file"
+            cat "$FILE"
+            exit 1
+          fi
+
+          # Verify the actual value
+          DONE=$(jq -r '.[] | select(.type == "result") | .structured_output.done' "$FILE")
+          if [ "$DONE" != "true" ]; then
+            echo "❌ Wrong value in execution file"
+            exit 1
+          fi
+
+          echo "✅ Execution file format correct"
+
+  test-summary:
+    name: Summary
+    runs-on: ubuntu-latest
+    needs:
+      - test-basic-types
+      - test-complex-types
+      - test-edge-cases
+      - test-name-sanitization
+      - test-execution-file-structure
+    if: always()
+    steps:
+      - name: Generate Summary
+        run: |
+          echo "# Structured Output Tests (Optimized)" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "Fast, deterministic tests using explicit prompts" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "| Test | Result |" >> $GITHUB_STEP_SUMMARY
+          echo "|------|--------|" >> $GITHUB_STEP_SUMMARY
+          echo "| Basic Types | ${{ needs.test-basic-types.result == 'success' && '✅ PASS' || '❌ FAIL' }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| Complex Types | ${{ needs.test-complex-types.result == 'success' && '✅ PASS' || '❌ FAIL' }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| Edge Cases | ${{ needs.test-edge-cases.result == 'success' && '✅ PASS' || '❌ FAIL' }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| Name Sanitization | ${{ needs.test-name-sanitization.result == 'success' && '✅ PASS' || '❌ FAIL' }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| Execution File | ${{ needs.test-execution-file-structure.result == 'success' && '✅ PASS' || '❌ FAIL' }} |" >> $GITHUB_STEP_SUMMARY
+
+          # Check if all passed
+          ALL_PASSED=${{
+            needs.test-basic-types.result == 'success' &&
+            needs.test-complex-types.result == 'success' &&
+            needs.test-edge-cases.result == 'success' &&
+            needs.test-name-sanitization.result == 'success' &&
+            needs.test-execution-file-structure.result == 'success'
+          }}
+
+          if [ "$ALL_PASSED" = "true" ]; then
+            echo "" >> $GITHUB_STEP_SUMMARY
+            echo "## ✅ All Tests Passed" >> $GITHUB_STEP_SUMMARY
+          else
+            echo "" >> $GITHUB_STEP_SUMMARY
+            echo "## ❌ Some Tests Failed" >> $GITHUB_STEP_SUMMARY
+            exit 1
+          fi
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@

 # Claude Code Action

-A general-purpose [Claude Code](https://claude.ai/code) action for GitHub PRs and issues that can answer questions and implement code changes. This action intelligently detects when to activate based on your workflow context—whether responding to @claude mentions, issue assignments, or executing automation tasks with explicit prompts. It supports multiple authentication methods including Anthropic direct API, Amazon Bedrock, and Google Vertex AI.
+A general-purpose [Claude Code](https://claude.ai/code) action for GitHub PRs and issues that can answer questions and implement code changes. This action intelligently detects when to activate based on your workflow context—whether responding to @claude mentions, issue assignments, or executing automation tasks with explicit prompts. It supports multiple authentication methods including Anthropic direct API, Amazon Bedrock, Google Vertex AI, and Microsoft Foundry.

 ## Features

@@ -13,6 +13,7 @@ A general-purpose [Claude Code](https://claude.ai/code) action for GitHub PRs an
 - 💬 **PR/Issue Integration**: Works seamlessly with GitHub comments and PR reviews
 - 🛠️ **Flexible Tool Access**: Access to GitHub APIs and file operations (additional tools can be enabled via configuration)
 - 📋 **Progress Tracking**: Visual progress indicators with checkboxes that dynamically update as Claude completes tasks
+- 📊 **Structured Outputs**: Get validated JSON results that automatically become GitHub Action outputs for complex automations
 - 🏃 **Runs on Your Infrastructure**: The action executes entirely on your own GitHub runner (Anthropic API calls go to your chosen provider)
 - ⚙️ **Simplified Configuration**: Unified `prompt` and `claude_args` inputs provide clean, powerful configuration aligned with Claude Code SDK

@@ -29,7 +30,7 @@ This command will guide you through setting up the GitHub app and required secre
 **Note**:

 - You must be a repository admin to install the GitHub app and add secrets
- This quickstart method is only available for direct Anthropic API users. For AWS Bedrock or Google Vertex AI setup, see [docs/cloud-providers.md](./docs/cloud-providers.md).
+- This quickstart method is only available for direct Anthropic API users. For AWS Bedrock, Google Vertex AI, or Microsoft Foundry setup, see [docs/cloud-providers.md](./docs/cloud-providers.md).

 ## 📚 Solutions & Use Cases

@@ -56,7 +57,7 @@ Each solution includes complete working examples, configuration details, and exp
 - [Custom Automations](./docs/custom-automations.md) - Examples of automated workflows and custom prompts
 - [Configuration](./docs/configuration.md) - MCP servers, permissions, environment variables, and advanced settings
 - [Experimental Features](./docs/experimental.md) - Execution modes and network restrictions
- [Cloud Providers](./docs/cloud-providers.md) - AWS Bedrock and Google Vertex AI setup
+- [Cloud Providers](./docs/cloud-providers.md) - AWS Bedrock, Google Vertex AI, and Microsoft Foundry setup
 - [Capabilities & Limitations](./docs/capabilities-and-limitations.md) - What Claude can and cannot do
 - [Security](./docs/security.md) - Access control, permissions, and commit signing
 - [FAQ](./docs/faq.md) - Common questions and troubleshooting
--- a/action.yml
+++ b/action.yml
@@ -44,7 +44,7 @@ inputs:

  # Auth configuration
  anthropic_api_key:
-    description: "Anthropic API key (required for direct API, not needed for Bedrock/Vertex)"
+    description: "Anthropic API key (required for direct API, not needed for Bedrock/Vertex/Foundry)"
    required: false
  claude_code_oauth_token:
    description: "Claude Code OAuth token (alternative to anthropic_api_key)"
@@ -60,6 +60,10 @@ inputs:
    description: "Use Google Vertex AI with OIDC authentication instead of direct Anthropic API"
    required: false
    default: "false"
+  use_foundry:
+    description: "Use Microsoft Foundry with OIDC authentication instead of direct Anthropic API"
+    required: false
+    default: "false"

  claude_args:
    description: "Additional arguments to pass directly to Claude CLI"
@@ -89,10 +93,6 @@ inputs:
    description: "Force tag mode with tracking comments for pull_request and issue events. Only applicable to pull_request (opened, synchronize, ready_for_review, reopened) and issue (opened, edited, labeled, assigned) events."
    required: false
    default: "false"
-  experimental_allowed_domains:
-    description: "Restrict network access to these domains only (newline-separated). If not set, no restrictions are applied. Provider domains are auto-detected."
-    required: false
-    default: ""
  path_to_claude_code_executable:
    description: "Optional path to a custom Claude Code executable. If provided, skips automatic installation and uses this executable instead. WARNING: Using an older version may cause problems if the action begins taking advantage of new Claude Code features. This input is typically not needed unless you're debugging something specific or have unique needs in your environment."
    required: false
@@ -124,6 +124,9 @@ outputs:
  github_token:
    description: "The GitHub token used by the action (Claude App token if available)"
    value: ${{ steps.prepare.outputs.github_token }}
+  structured_output:
+    description: "JSON string containing all structured output fields when --json-schema is provided in claude_args. Use fromJSON() to parse: fromJSON(steps.id.outputs.structured_output).field_name"
+    value: ${{ steps.claude-code.outputs.structured_output }}

 runs:
  using: "composite"
@@ -188,8 +191,23 @@ runs:

        # Install Claude Code if no custom executable is provided
        if [ -z "${{ inputs.path_to_claude_code_executable }}" ]; then
-          echo "Installing Claude Code..."
-          curl -fsSL https://claude.ai/install.sh | bash -s 2.0.43
+          CLAUDE_CODE_VERSION="2.0.55"
+          echo "Installing Claude Code v${CLAUDE_CODE_VERSION}..."
+          for attempt in 1 2 3; do
+            echo "Installation attempt $attempt..."
+            if command -v timeout &> /dev/null; then
+              timeout 120 bash -c "curl -fsSL https://claude.ai/install.sh | bash -s -- $CLAUDE_CODE_VERSION" && break
+            else
+              curl -fsSL https://claude.ai/install.sh | bash -s -- "$CLAUDE_CODE_VERSION" && break
+            fi
+            if [ $attempt -eq 3 ]; then
+              echo "Failed to install Claude Code after 3 attempts"
+              exit 1
+            fi
+            echo "Installation failed, retrying..."
+            sleep 5
+          done
+          echo "Claude Code installed successfully"
          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
        else
          echo "Using custom Claude Code executable: ${{ inputs.path_to_claude_code_executable }}"
@@ -198,15 +216,6 @@ runs:
          echo "$CLAUDE_DIR" >> "$GITHUB_PATH"
        fi

-    - name: Setup Network Restrictions
-      if: steps.prepare.outputs.contains_trigger == 'true' && inputs.experimental_allowed_domains != ''
-      shell: bash
-      run: |
-        chmod +x ${GITHUB_ACTION_PATH}/scripts/setup-network-restrictions.sh
-        ${GITHUB_ACTION_PATH}/scripts/setup-network-restrictions.sh
-      env:
-        EXPERIMENTAL_ALLOWED_DOMAINS: ${{ inputs.experimental_allowed_domains }}
-
    - name: Run Claude Code
      id: claude-code
      if: steps.prepare.outputs.contains_trigger == 'true'
@@ -241,12 +250,14 @@ runs:
        ANTHROPIC_CUSTOM_HEADERS: ${{ env.ANTHROPIC_CUSTOM_HEADERS }}
        CLAUDE_CODE_USE_BEDROCK: ${{ inputs.use_bedrock == 'true' && '1' || '' }}
        CLAUDE_CODE_USE_VERTEX: ${{ inputs.use_vertex == 'true' && '1' || '' }}
+        CLAUDE_CODE_USE_FOUNDRY: ${{ inputs.use_foundry == 'true' && '1' || '' }}

        # AWS configuration
        AWS_REGION: ${{ env.AWS_REGION }}
        AWS_ACCESS_KEY_ID: ${{ env.AWS_ACCESS_KEY_ID }}
        AWS_SECRET_ACCESS_KEY: ${{ env.AWS_SECRET_ACCESS_KEY }}
        AWS_SESSION_TOKEN: ${{ env.AWS_SESSION_TOKEN }}
+        AWS_BEARER_TOKEN_BEDROCK: ${{ env.AWS_BEARER_TOKEN_BEDROCK }}
        ANTHROPIC_BEDROCK_BASE_URL: ${{ env.ANTHROPIC_BEDROCK_BASE_URL || (env.AWS_REGION && format('https://bedrock-runtime.{0}.amazonaws.com', env.AWS_REGION)) }}

        # GCP configuration
@@ -260,6 +271,13 @@ runs:
        VERTEX_REGION_CLAUDE_3_5_SONNET: ${{ env.VERTEX_REGION_CLAUDE_3_5_SONNET }}
        VERTEX_REGION_CLAUDE_3_7_SONNET: ${{ env.VERTEX_REGION_CLAUDE_3_7_SONNET }}

+        # Microsoft Foundry configuration
+        ANTHROPIC_FOUNDRY_RESOURCE: ${{ env.ANTHROPIC_FOUNDRY_RESOURCE }}
+        ANTHROPIC_FOUNDRY_BASE_URL: ${{ env.ANTHROPIC_FOUNDRY_BASE_URL }}
+        ANTHROPIC_DEFAULT_SONNET_MODEL: ${{ env.ANTHROPIC_DEFAULT_SONNET_MODEL }}
+        ANTHROPIC_DEFAULT_HAIKU_MODEL: ${{ env.ANTHROPIC_DEFAULT_HAIKU_MODEL }}
+        ANTHROPIC_DEFAULT_OPUS_MODEL: ${{ env.ANTHROPIC_DEFAULT_OPUS_MODEL }}
+
    - name: Update comment with job link
      if: steps.prepare.outputs.contains_trigger == 'true' && steps.prepare.outputs.claude_comment_id && always()
      shell: bash
--- a/base-action/action.yml
+++ b/base-action/action.yml
@@ -42,6 +42,10 @@ inputs:
    description: "Use Google Vertex AI with OIDC authentication instead of direct Anthropic API"
    required: false
    default: "false"
+  use_foundry:
+    description: "Use Microsoft Foundry with OIDC authentication instead of direct Anthropic API"
+    required: false
+    default: "false"

  use_node_cache:
    description: "Whether to use Node.js dependency caching (set to true only for Node.js projects with lock files)"
@@ -75,6 +79,9 @@ outputs:
  execution_file:
    description: "Path to the JSON file containing Claude Code execution log"
    value: ${{ steps.run_claude.outputs.execution_file }}
+  structured_output:
+    description: "JSON string containing all structured output fields when --json-schema is provided in claude_args (use fromJSON() or jq to parse)"
+    value: ${{ steps.run_claude.outputs.structured_output }}

 runs:
  using: "composite"
@@ -110,8 +117,23 @@ runs:
      shell: bash
      run: |
        if [ -z "${{ inputs.path_to_claude_code_executable }}" ]; then
-          echo "Installing Claude Code..."
-          curl -fsSL https://claude.ai/install.sh | bash -s 2.0.43
+          CLAUDE_CODE_VERSION="2.0.55"
+          echo "Installing Claude Code v${CLAUDE_CODE_VERSION}..."
+          for attempt in 1 2 3; do
+            echo "Installation attempt $attempt..."
+            if command -v timeout &> /dev/null; then
+              timeout 120 bash -c "curl -fsSL https://claude.ai/install.sh | bash -s -- $CLAUDE_CODE_VERSION" && break
+            else
+              curl -fsSL https://claude.ai/install.sh | bash -s -- "$CLAUDE_CODE_VERSION" && break
+            fi
+            if [ $attempt -eq 3 ]; then
+              echo "Failed to install Claude Code after 3 attempts"
+              exit 1
+            fi
+            echo "Installation failed, retrying..."
+            sleep 5
+          done
+          echo "Claude Code installed successfully"
        else
          echo "Using custom Claude Code executable: ${{ inputs.path_to_claude_code_executable }}"
          # Add the directory containing the custom executable to PATH
@@ -150,12 +172,14 @@ runs:
        # Only set provider flags if explicitly true, since any value (including "false") is truthy
        CLAUDE_CODE_USE_BEDROCK: ${{ inputs.use_bedrock == 'true' && '1' || '' }}
        CLAUDE_CODE_USE_VERTEX: ${{ inputs.use_vertex == 'true' && '1' || '' }}
+        CLAUDE_CODE_USE_FOUNDRY: ${{ inputs.use_foundry == 'true' && '1' || '' }}

        # AWS configuration
        AWS_REGION: ${{ env.AWS_REGION }}
        AWS_ACCESS_KEY_ID: ${{ env.AWS_ACCESS_KEY_ID }}
        AWS_SECRET_ACCESS_KEY: ${{ env.AWS_SECRET_ACCESS_KEY }}
        AWS_SESSION_TOKEN: ${{ env.AWS_SESSION_TOKEN }}
+        AWS_BEARER_TOKEN_BEDROCK: ${{ env.AWS_BEARER_TOKEN_BEDROCK }}
        ANTHROPIC_BEDROCK_BASE_URL: ${{ env.ANTHROPIC_BEDROCK_BASE_URL || (env.AWS_REGION && format('https://bedrock-runtime.{0}.amazonaws.com', env.AWS_REGION)) }}

        # GCP configuration
@@ -163,3 +187,10 @@ runs:
        CLOUD_ML_REGION: ${{ env.CLOUD_ML_REGION }}
        GOOGLE_APPLICATION_CREDENTIALS: ${{ env.GOOGLE_APPLICATION_CREDENTIALS }}
        ANTHROPIC_VERTEX_BASE_URL: ${{ env.ANTHROPIC_VERTEX_BASE_URL }}
+
+        # Microsoft Foundry configuration
+        ANTHROPIC_FOUNDRY_RESOURCE: ${{ env.ANTHROPIC_FOUNDRY_RESOURCE }}
+        ANTHROPIC_FOUNDRY_BASE_URL: ${{ env.ANTHROPIC_FOUNDRY_BASE_URL }}
+        ANTHROPIC_DEFAULT_SONNET_MODEL: ${{ env.ANTHROPIC_DEFAULT_SONNET_MODEL }}
+        ANTHROPIC_DEFAULT_HAIKU_MODEL: ${{ env.ANTHROPIC_DEFAULT_HAIKU_MODEL }}
+        ANTHROPIC_DEFAULT_OPUS_MODEL: ${{ env.ANTHROPIC_DEFAULT_OPUS_MODEL }}
--- a/base-action/src/run-claude.ts
+++ b/base-action/src/run-claude.ts
@@ -1,7 +1,7 @@
 import * as core from "@actions/core";
 import { exec } from "child_process";
 import { promisify } from "util";
-import { unlink, writeFile, stat } from "fs/promises";
+import { unlink, writeFile, stat, readFile } from "fs/promises";
 import { createWriteStream } from "fs";
 import { spawn } from "child_process";
 import { parse as parseShellArgs } from "shell-quote";
@@ -122,9 +122,54 @@ export function prepareRunConfig(
  };
 }

+/**
+ * Parses structured_output from execution file and sets GitHub Action outputs
+ * Only runs if --json-schema was explicitly provided in claude_args
+ * Exported for testing
+ */
+export async function parseAndSetStructuredOutputs(
+  executionFile: string,
+): Promise<void> {
+  try {
+    const content = await readFile(executionFile, "utf-8");
+    const messages = JSON.parse(content) as {
+      type: string;
+      structured_output?: Record<string, unknown>;
+    }[];
+
+    // Search backwards - result is typically last or second-to-last message
+    const result = messages.findLast(
+      (m) => m.type === "result" && m.structured_output,
+    );
+
+    if (!result?.structured_output) {
+      throw new Error(
+        `--json-schema was provided but Claude did not return structured_output.\n` +
+          `Found ${messages.length} messages. Result exists: ${!!result}\n`,
+      );
+    }
+
+    // Set the complete structured output as a single JSON string
+    // This works around GitHub Actions limitation that composite actions can't have dynamic outputs
+    const structuredOutputJson = JSON.stringify(result.structured_output);
+    core.setOutput("structured_output", structuredOutputJson);
+    core.info(
+      `Set structured_output with ${Object.keys(result.structured_output).length} field(s)`,
+    );
+  } catch (error) {
+    if (error instanceof Error) {
+      throw error; // Preserve original error and stack trace
+    }
+    throw new Error(`Failed to parse structured outputs: ${error}`);
+  }
+}
+
 export async function runClaude(promptPath: string, options: ClaudeOptions) {
  const config = prepareRunConfig(promptPath, options);

+  // Detect if --json-schema is present in claude args
+  const hasJsonSchema = options.claudeArgs?.includes("--json-schema") ?? false;
+
  // Create a named pipe
  try {
    await unlink(PIPE_PATH);
@@ -308,8 +353,23 @@ export async function runClaude(promptPath: string, options: ClaudeOptions) {
      core.warning(`Failed to process output for execution metrics: ${e}`);
    }

-    core.setOutput("conclusion", "success");
    core.setOutput("execution_file", EXECUTION_FILE);
+
+    // Parse and set structured outputs only if user provided --json-schema in claude_args
+    if (hasJsonSchema) {
+      try {
+        await parseAndSetStructuredOutputs(EXECUTION_FILE);
+      } catch (error) {
+        const errorMessage =
+          error instanceof Error ? error.message : String(error);
+        core.setFailed(errorMessage);
+        core.setOutput("conclusion", "failure");
+        process.exit(1);
+      }
+    }
+
+    // Set conclusion to success if we reached here
+    core.setOutput("conclusion", "success");
  } else {
    core.setOutput("conclusion", "failure");

--- a/base-action/src/validate-env.ts
+++ b/base-action/src/validate-env.ts
@@ -1,39 +1,50 @@
 /**
 * Validates the environment variables required for running Claude Code
- * based on the selected provider (Anthropic API, AWS Bedrock, or Google Vertex AI)
+ * based on the selected provider (Anthropic API, AWS Bedrock, Google Vertex AI, or Microsoft Foundry)
 */
 export function validateEnvironmentVariables() {
  const useBedrock = process.env.CLAUDE_CODE_USE_BEDROCK === "1";
  const useVertex = process.env.CLAUDE_CODE_USE_VERTEX === "1";
+  const useFoundry = process.env.CLAUDE_CODE_USE_FOUNDRY === "1";
  const anthropicApiKey = process.env.ANTHROPIC_API_KEY;
  const claudeCodeOAuthToken = process.env.CLAUDE_CODE_OAUTH_TOKEN;

  const errors: string[] = [];

-  if (useBedrock && useVertex) {
+  // Check for mutual exclusivity between providers
+  const activeProviders = [useBedrock, useVertex, useFoundry].filter(Boolean);
+  if (activeProviders.length > 1) {
    errors.push(
-      "Cannot use both Bedrock and Vertex AI simultaneously. Please set only one provider.",
+      "Cannot use multiple providers simultaneously. Please set only one of: CLAUDE_CODE_USE_BEDROCK, CLAUDE_CODE_USE_VERTEX, or CLAUDE_CODE_USE_FOUNDRY.",
    );
  }

-  if (!useBedrock && !useVertex) {
+  if (!useBedrock && !useVertex && !useFoundry) {
    if (!anthropicApiKey && !claudeCodeOAuthToken) {
      errors.push(
        "Either ANTHROPIC_API_KEY or CLAUDE_CODE_OAUTH_TOKEN is required when using direct Anthropic API.",
      );
    }
  } else if (useBedrock) {
-    const requiredBedrockVars = {
-      AWS_REGION: process.env.AWS_REGION,
-      AWS_ACCESS_KEY_ID: process.env.AWS_ACCESS_KEY_ID,
-      AWS_SECRET_ACCESS_KEY: process.env.AWS_SECRET_ACCESS_KEY,
-    };
+    const awsRegion = process.env.AWS_REGION;
+    const awsAccessKeyId = process.env.AWS_ACCESS_KEY_ID;
+    const awsSecretAccessKey = process.env.AWS_SECRET_ACCESS_KEY;
+    const awsBearerToken = process.env.AWS_BEARER_TOKEN_BEDROCK;

-    Object.entries(requiredBedrockVars).forEach(([key, value]) => {
-      if (!value) {
-        errors.push(`${key} is required when using AWS Bedrock.`);
-      }
-    });
+    // AWS_REGION is always required for Bedrock
+    if (!awsRegion) {
+      errors.push("AWS_REGION is required when using AWS Bedrock.");
+    }
+
+    // Either bearer token OR access key credentials must be provided
+    const hasAccessKeyCredentials = awsAccessKeyId && awsSecretAccessKey;
+    const hasBearerToken = awsBearerToken;
+
+    if (!hasAccessKeyCredentials && !hasBearerToken) {
+      errors.push(
+        "Either AWS_BEARER_TOKEN_BEDROCK or both AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are required when using AWS Bedrock.",
+      );
+    }
  } else if (useVertex) {
    const requiredVertexVars = {
      ANTHROPIC_VERTEX_PROJECT_ID: process.env.ANTHROPIC_VERTEX_PROJECT_ID,
@@ -45,6 +56,16 @@ export function validateEnvironmentVariables() {
        errors.push(`${key} is required when using Google Vertex AI.`);
      }
    });
+  } else if (useFoundry) {
+    const foundryResource = process.env.ANTHROPIC_FOUNDRY_RESOURCE;
+    const foundryBaseUrl = process.env.ANTHROPIC_FOUNDRY_BASE_URL;
+
+    // Either resource name or base URL is required
+    if (!foundryResource && !foundryBaseUrl) {
+      errors.push(
+        "Either ANTHROPIC_FOUNDRY_RESOURCE or ANTHROPIC_FOUNDRY_BASE_URL is required when using Microsoft Foundry.",
+      );
+    }
  }

  if (errors.length > 0) {
--- a/base-action/test/run-claude.test.ts
+++ b/base-action/test/run-claude.test.ts
@@ -78,5 +78,19 @@ describe("prepareRunConfig", () => {
        "stream-json",
      ]);
    });
+
+    test("should include json-schema flag when provided", () => {
+      const options: ClaudeOptions = {
+        claudeArgs:
+          '--json-schema \'{"type":"object","properties":{"result":{"type":"boolean"}}}\'',
+      };
+
+      const prepared = prepareRunConfig("/tmp/test-prompt.txt", options);
+
+      expect(prepared.claudeArgs).toContain("--json-schema");
+      expect(prepared.claudeArgs).toContain(
+        '{"type":"object","properties":{"result":{"type":"boolean"}}}',
+      );
+    });
  });
 });
--- a/base-action/test/structured-output.test.ts
+++ b/base-action/test/structured-output.test.ts
@@ -0,0 +1,158 @@
+#!/usr/bin/env bun
+
+import { describe, test, expect, afterEach, beforeEach, spyOn } from "bun:test";
+import { writeFile, unlink } from "fs/promises";
+import { tmpdir } from "os";
+import { join } from "path";
+import { parseAndSetStructuredOutputs } from "../src/run-claude";
+import * as core from "@actions/core";
+
+// Mock execution file path
+const TEST_EXECUTION_FILE = join(tmpdir(), "test-execution-output.json");
+
+// Helper to create mock execution file with structured output
+async function createMockExecutionFile(
+  structuredOutput?: Record<string, unknown>,
+  includeResult: boolean = true,
+): Promise<void> {
+  const messages: any[] = [
+    { type: "system", subtype: "init" },
+    { type: "turn", content: "test" },
+  ];
+
+  if (includeResult) {
+    messages.push({
+      type: "result",
+      cost_usd: 0.01,
+      duration_ms: 1000,
+      structured_output: structuredOutput,
+    });
+  }
+
+  await writeFile(TEST_EXECUTION_FILE, JSON.stringify(messages));
+}
+
+// Spy on core functions
+let setOutputSpy: any;
+let infoSpy: any;
+
+beforeEach(() => {
+  setOutputSpy = spyOn(core, "setOutput").mockImplementation(() => {});
+  infoSpy = spyOn(core, "info").mockImplementation(() => {});
+});
+
+describe("parseAndSetStructuredOutputs", () => {
+  afterEach(async () => {
+    setOutputSpy?.mockRestore();
+    infoSpy?.mockRestore();
+    try {
+      await unlink(TEST_EXECUTION_FILE);
+    } catch {
+      // Ignore if file doesn't exist
+    }
+  });
+
+  test("should set structured_output with valid data", async () => {
+    await createMockExecutionFile({
+      is_flaky: true,
+      confidence: 0.85,
+      summary: "Test looks flaky",
+    });
+
+    await parseAndSetStructuredOutputs(TEST_EXECUTION_FILE);
+
+    expect(setOutputSpy).toHaveBeenCalledWith(
+      "structured_output",
+      '{"is_flaky":true,"confidence":0.85,"summary":"Test looks flaky"}',
+    );
+    expect(infoSpy).toHaveBeenCalledWith(
+      "Set structured_output with 3 field(s)",
+    );
+  });
+
+  test("should handle arrays and nested objects", async () => {
+    await createMockExecutionFile({
+      items: ["a", "b", "c"],
+      config: { key: "value", nested: { deep: true } },
+    });
+
+    await parseAndSetStructuredOutputs(TEST_EXECUTION_FILE);
+
+    const callArgs = setOutputSpy.mock.calls[0];
+    expect(callArgs[0]).toBe("structured_output");
+    const parsed = JSON.parse(callArgs[1]);
+    expect(parsed).toEqual({
+      items: ["a", "b", "c"],
+      config: { key: "value", nested: { deep: true } },
+    });
+  });
+
+  test("should handle special characters in field names", async () => {
+    await createMockExecutionFile({
+      "test-result": "passed",
+      "item.count": 10,
+      "user@email": "test",
+    });
+
+    await parseAndSetStructuredOutputs(TEST_EXECUTION_FILE);
+
+    const callArgs = setOutputSpy.mock.calls[0];
+    const parsed = JSON.parse(callArgs[1]);
+    expect(parsed["test-result"]).toBe("passed");
+    expect(parsed["item.count"]).toBe(10);
+    expect(parsed["user@email"]).toBe("test");
+  });
+
+  test("should throw error when result exists but structured_output is undefined", async () => {
+    const messages = [
+      { type: "system", subtype: "init" },
+      { type: "result", cost_usd: 0.01, duration_ms: 1000 },
+    ];
+    await writeFile(TEST_EXECUTION_FILE, JSON.stringify(messages));
+
+    await expect(
+      parseAndSetStructuredOutputs(TEST_EXECUTION_FILE),
+    ).rejects.toThrow(
+      "--json-schema was provided but Claude did not return structured_output",
+    );
+  });
+
+  test("should throw error when no result message exists", async () => {
+    const messages = [
+      { type: "system", subtype: "init" },
+      { type: "turn", content: "test" },
+    ];
+    await writeFile(TEST_EXECUTION_FILE, JSON.stringify(messages));
+
+    await expect(
+      parseAndSetStructuredOutputs(TEST_EXECUTION_FILE),
+    ).rejects.toThrow(
+      "--json-schema was provided but Claude did not return structured_output",
+    );
+  });
+
+  test("should throw error with malformed JSON", async () => {
+    await writeFile(TEST_EXECUTION_FILE, "{ invalid json");
+
+    await expect(
+      parseAndSetStructuredOutputs(TEST_EXECUTION_FILE),
+    ).rejects.toThrow();
+  });
+
+  test("should throw error when file does not exist", async () => {
+    await expect(
+      parseAndSetStructuredOutputs("/nonexistent/file.json"),
+    ).rejects.toThrow();
+  });
+
+  test("should handle empty structured_output object", async () => {
+    await createMockExecutionFile({});
+
+    await parseAndSetStructuredOutputs(TEST_EXECUTION_FILE);
+
+    expect(setOutputSpy).toHaveBeenCalledWith("structured_output", "{}");
+    expect(infoSpy).toHaveBeenCalledWith(
+      "Set structured_output with 0 field(s)",
+    );
+  });
+});
--- a/base-action/test/validate-env.test.ts
+++ b/base-action/test/validate-env.test.ts
@@ -13,15 +13,19 @@ describe("validateEnvironmentVariables", () => {
    delete process.env.ANTHROPIC_API_KEY;
    delete process.env.CLAUDE_CODE_USE_BEDROCK;
    delete process.env.CLAUDE_CODE_USE_VERTEX;
+    delete process.env.CLAUDE_CODE_USE_FOUNDRY;
    delete process.env.AWS_REGION;
    delete process.env.AWS_ACCESS_KEY_ID;
    delete process.env.AWS_SECRET_ACCESS_KEY;
    delete process.env.AWS_SESSION_TOKEN;
+    delete process.env.AWS_BEARER_TOKEN_BEDROCK;
    delete process.env.ANTHROPIC_BEDROCK_BASE_URL;
    delete process.env.ANTHROPIC_VERTEX_PROJECT_ID;
    delete process.env.CLOUD_ML_REGION;
    delete process.env.GOOGLE_APPLICATION_CREDENTIALS;
    delete process.env.ANTHROPIC_VERTEX_BASE_URL;
+    delete process.env.ANTHROPIC_FOUNDRY_RESOURCE;
+    delete process.env.ANTHROPIC_FOUNDRY_BASE_URL;
  });

  afterEach(() => {
@@ -92,31 +96,58 @@ describe("validateEnvironmentVariables", () => {
      );
    });

-    test("should fail when AWS_ACCESS_KEY_ID is missing", () => {
+    test("should fail when only AWS_SECRET_ACCESS_KEY is provided without bearer token", () => {
      process.env.CLAUDE_CODE_USE_BEDROCK = "1";
      process.env.AWS_REGION = "us-east-1";
      process.env.AWS_SECRET_ACCESS_KEY = "test-secret-key";

      expect(() => validateEnvironmentVariables()).toThrow(
-        "AWS_ACCESS_KEY_ID is required when using AWS Bedrock.",
+        "Either AWS_BEARER_TOKEN_BEDROCK or both AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are required when using AWS Bedrock.",
      );
    });

-    test("should fail when AWS_SECRET_ACCESS_KEY is missing", () => {
+    test("should fail when only AWS_ACCESS_KEY_ID is provided without bearer token", () => {
      process.env.CLAUDE_CODE_USE_BEDROCK = "1";
      process.env.AWS_REGION = "us-east-1";
      process.env.AWS_ACCESS_KEY_ID = "test-access-key";

      expect(() => validateEnvironmentVariables()).toThrow(
-        "AWS_SECRET_ACCESS_KEY is required when using AWS Bedrock.",
+        "Either AWS_BEARER_TOKEN_BEDROCK or both AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are required when using AWS Bedrock.",
      );
    });

-    test("should report all missing Bedrock variables", () => {
+    test("should pass when AWS_BEARER_TOKEN_BEDROCK is provided instead of access keys", () => {
+      process.env.CLAUDE_CODE_USE_BEDROCK = "1";
+      process.env.AWS_REGION = "us-east-1";
+      process.env.AWS_BEARER_TOKEN_BEDROCK = "test-bearer-token";
+
+      expect(() => validateEnvironmentVariables()).not.toThrow();
+    });
+
+    test("should pass when both bearer token and access keys are provided", () => {
+      process.env.CLAUDE_CODE_USE_BEDROCK = "1";
+      process.env.AWS_REGION = "us-east-1";
+      process.env.AWS_BEARER_TOKEN_BEDROCK = "test-bearer-token";
+      process.env.AWS_ACCESS_KEY_ID = "test-access-key";
+      process.env.AWS_SECRET_ACCESS_KEY = "test-secret-key";
+
+      expect(() => validateEnvironmentVariables()).not.toThrow();
+    });
+
+    test("should fail when no authentication method is provided", () => {
+      process.env.CLAUDE_CODE_USE_BEDROCK = "1";
+      process.env.AWS_REGION = "us-east-1";
+
+      expect(() => validateEnvironmentVariables()).toThrow(
+        "Either AWS_BEARER_TOKEN_BEDROCK or both AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are required when using AWS Bedrock.",
+      );
+    });
+
+    test("should report missing region and authentication", () => {
      process.env.CLAUDE_CODE_USE_BEDROCK = "1";

      expect(() => validateEnvironmentVariables()).toThrow(
-        /AWS_REGION is required when using AWS Bedrock.*AWS_ACCESS_KEY_ID is required when using AWS Bedrock.*AWS_SECRET_ACCESS_KEY is required when using AWS Bedrock/s,
+        /AWS_REGION is required when using AWS Bedrock.*Either AWS_BEARER_TOKEN_BEDROCK or both AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are required when using AWS Bedrock/s,
      );
    });
  });
@@ -167,6 +198,56 @@ describe("validateEnvironmentVariables", () => {
    });
  });

+  describe("Microsoft Foundry", () => {
+    test("should pass when ANTHROPIC_FOUNDRY_RESOURCE is provided", () => {
+      process.env.CLAUDE_CODE_USE_FOUNDRY = "1";
+      process.env.ANTHROPIC_FOUNDRY_RESOURCE = "test-resource";
+
+      expect(() => validateEnvironmentVariables()).not.toThrow();
+    });
+
+    test("should pass when ANTHROPIC_FOUNDRY_BASE_URL is provided", () => {
+      process.env.CLAUDE_CODE_USE_FOUNDRY = "1";
+      process.env.ANTHROPIC_FOUNDRY_BASE_URL =
+        "https://test-resource.services.ai.azure.com";
+
+      expect(() => validateEnvironmentVariables()).not.toThrow();
+    });
+
+    test("should pass when both resource and base URL are provided", () => {
+      process.env.CLAUDE_CODE_USE_FOUNDRY = "1";
+      process.env.ANTHROPIC_FOUNDRY_RESOURCE = "test-resource";
+      process.env.ANTHROPIC_FOUNDRY_BASE_URL =
+        "https://custom.services.ai.azure.com";
+
+      expect(() => validateEnvironmentVariables()).not.toThrow();
+    });
+
+    test("should construct Foundry base URL from resource name when ANTHROPIC_FOUNDRY_BASE_URL is not provided", () => {
+      // This test verifies our action.yml change, which constructs:
+      // ANTHROPIC_FOUNDRY_BASE_URL: ${{ env.ANTHROPIC_FOUNDRY_BASE_URL || (env.ANTHROPIC_FOUNDRY_RESOURCE && format('https://{0}.services.ai.azure.com', env.ANTHROPIC_FOUNDRY_RESOURCE)) }}
+
+      process.env.CLAUDE_CODE_USE_FOUNDRY = "1";
+      process.env.ANTHROPIC_FOUNDRY_RESOURCE = "my-foundry-resource";
+      // ANTHROPIC_FOUNDRY_BASE_URL is intentionally not set
+
+      // The actual URL construction happens in the composite action in action.yml
+      // This test is a placeholder to document the behavior
+      expect(() => validateEnvironmentVariables()).not.toThrow();
+
+      // In the actual action, ANTHROPIC_FOUNDRY_BASE_URL would be:
+      // https://my-foundry-resource.services.ai.azure.com
+    });
+
+    test("should fail when neither ANTHROPIC_FOUNDRY_RESOURCE nor ANTHROPIC_FOUNDRY_BASE_URL is provided", () => {
+      process.env.CLAUDE_CODE_USE_FOUNDRY = "1";
+
+      expect(() => validateEnvironmentVariables()).toThrow(
+        "Either ANTHROPIC_FOUNDRY_RESOURCE or ANTHROPIC_FOUNDRY_BASE_URL is required when using Microsoft Foundry.",
+      );
+    });
+  });
+
  describe("Multiple providers", () => {
    test("should fail when both Bedrock and Vertex are enabled", () => {
      process.env.CLAUDE_CODE_USE_BEDROCK = "1";
@@ -179,7 +260,51 @@ describe("validateEnvironmentVariables", () => {
      process.env.CLOUD_ML_REGION = "us-central1";

      expect(() => validateEnvironmentVariables()).toThrow(
-        "Cannot use both Bedrock and Vertex AI simultaneously. Please set only one provider.",
+        "Cannot use multiple providers simultaneously. Please set only one of: CLAUDE_CODE_USE_BEDROCK, CLAUDE_CODE_USE_VERTEX, or CLAUDE_CODE_USE_FOUNDRY.",
+      );
+    });
+
+    test("should fail when both Bedrock and Foundry are enabled", () => {
+      process.env.CLAUDE_CODE_USE_BEDROCK = "1";
+      process.env.CLAUDE_CODE_USE_FOUNDRY = "1";
+      // Provide all required vars to isolate the mutual exclusion error
+      process.env.AWS_REGION = "us-east-1";
+      process.env.AWS_ACCESS_KEY_ID = "test-access-key";
+      process.env.AWS_SECRET_ACCESS_KEY = "test-secret-key";
+      process.env.ANTHROPIC_FOUNDRY_RESOURCE = "test-resource";
+
+      expect(() => validateEnvironmentVariables()).toThrow(
+        "Cannot use multiple providers simultaneously. Please set only one of: CLAUDE_CODE_USE_BEDROCK, CLAUDE_CODE_USE_VERTEX, or CLAUDE_CODE_USE_FOUNDRY.",
+      );
+    });
+
+    test("should fail when both Vertex and Foundry are enabled", () => {
+      process.env.CLAUDE_CODE_USE_VERTEX = "1";
+      process.env.CLAUDE_CODE_USE_FOUNDRY = "1";
+      // Provide all required vars to isolate the mutual exclusion error
+      process.env.ANTHROPIC_VERTEX_PROJECT_ID = "test-project";
+      process.env.CLOUD_ML_REGION = "us-central1";
+      process.env.ANTHROPIC_FOUNDRY_RESOURCE = "test-resource";
+
+      expect(() => validateEnvironmentVariables()).toThrow(
+        "Cannot use multiple providers simultaneously. Please set only one of: CLAUDE_CODE_USE_BEDROCK, CLAUDE_CODE_USE_VERTEX, or CLAUDE_CODE_USE_FOUNDRY.",
+      );
+    });
+
+    test("should fail when all three providers are enabled", () => {
+      process.env.CLAUDE_CODE_USE_BEDROCK = "1";
+      process.env.CLAUDE_CODE_USE_VERTEX = "1";
+      process.env.CLAUDE_CODE_USE_FOUNDRY = "1";
+      // Provide all required vars to isolate the mutual exclusion error
+      process.env.AWS_REGION = "us-east-1";
+      process.env.AWS_ACCESS_KEY_ID = "test-access-key";
+      process.env.AWS_SECRET_ACCESS_KEY = "test-secret-key";
+      process.env.ANTHROPIC_VERTEX_PROJECT_ID = "test-project";
+      process.env.CLOUD_ML_REGION = "us-central1";
+      process.env.ANTHROPIC_FOUNDRY_RESOURCE = "test-resource";
+
+      expect(() => validateEnvironmentVariables()).toThrow(
+        "Cannot use multiple providers simultaneously. Please set only one of: CLAUDE_CODE_USE_BEDROCK, CLAUDE_CODE_USE_VERTEX, or CLAUDE_CODE_USE_FOUNDRY.",
      );
    });
  });
@@ -204,10 +329,7 @@ describe("validateEnvironmentVariables", () => {
        "  - AWS_REGION is required when using AWS Bedrock.",
      );
      expect(error!.message).toContain(
-        "  - AWS_ACCESS_KEY_ID is required when using AWS Bedrock.",
-      );
-      expect(error!.message).toContain(
-        "  - AWS_SECRET_ACCESS_KEY is required when using AWS Bedrock.",
+        "  - Either AWS_BEARER_TOKEN_BEDROCK or both AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are required when using AWS Bedrock.",
      );
    });
  });
--- a/docs/cloud-providers.md
+++ b/docs/cloud-providers.md
@@ -1,16 +1,17 @@
 # Cloud Providers

-You can authenticate with Claude using any of these three methods:
+You can authenticate with Claude using any of these four methods:

 1. Direct Anthropic API (default)
 2. Amazon Bedrock with OIDC authentication
 3. Google Vertex AI with OIDC authentication
+4. Microsoft Foundry with OIDC authentication

 For detailed setup instructions for AWS Bedrock and Google Vertex AI, see the [official documentation](https://docs.anthropic.com/en/docs/claude-code/github-actions#using-with-aws-bedrock-%26-google-vertex-ai).

 **Note**:

- Bedrock and Vertex use OIDC authentication exclusively
+- Bedrock, Vertex, and Microsoft Foundry use OIDC authentication exclusively
 - AWS Bedrock automatically uses cross-region inference profiles for certain models
 - For cross-region inference profile models, you need to request and be granted access to the Claude models in all regions that the inference profile uses

@@ -40,11 +41,19 @@ Use provider-specific model names based on your chosen provider:
    claude_args: |
      --model claude-4-0-sonnet@20250805
    # ... other inputs
+
+# For Microsoft Foundry with OIDC
+- uses: anthropics/claude-code-action@v1
+  with:
+    use_foundry: "true"
+    claude_args: |
+      --model claude-sonnet-4-5
+    # ... other inputs
 ```

-## OIDC Authentication for Bedrock and Vertex
+## OIDC Authentication for Cloud Providers

-Both AWS Bedrock and GCP Vertex AI require OIDC authentication.
+AWS Bedrock, GCP Vertex AI, and Microsoft Foundry all support OIDC authentication.

 ```yaml
 # For AWS Bedrock with OIDC
@@ -97,3 +106,36 @@ Both AWS Bedrock and GCP Vertex AI require OIDC authentication.
  permissions:
    id-token: write # Required for OIDC
 ```
+
+```yaml
+# For Microsoft Foundry with OIDC
+- name: Authenticate to Azure
+  uses: azure/login@v2
+  with:
+    client-id: ${{ secrets.AZURE_CLIENT_ID }}
+    tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+    subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+
+- name: Generate GitHub App token
+  id: app-token
+  uses: actions/create-github-app-token@v2
+  with:
+    app-id: ${{ secrets.APP_ID }}
+    private-key: ${{ secrets.APP_PRIVATE_KEY }}
+
+- uses: anthropics/claude-code-action@v1
+  with:
+    use_foundry: "true"
+    claude_args: |
+      --model claude-sonnet-4-5
+    # ... other inputs
+  env:
+    ANTHROPIC_FOUNDRY_BASE_URL: https://my-resource.services.ai.azure.com
+
+permissions:
+  id-token: write # Required for OIDC
+```
+
+## Microsoft Foundry Setup
+
+For detailed setup instructions for Microsoft Foundry, see the [official documentation](https://docs.anthropic.com/en/docs/claude-code/microsoft-foundry).
--- a/docs/experimental.md
+++ b/docs/experimental.md
@@ -61,68 +61,3 @@ For specialized use cases, you can fine-tune behavior using `claude_args`:
      --system-prompt "You are a code review specialist"
    anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
 ```
-
-## Network Restrictions
-
-For enhanced security, you can restrict Claude's network access to specific domains only. This feature is particularly useful for:
-
- Enterprise environments with strict security policies
- Preventing access to external services
- Limiting Claude to only your internal APIs and services
-
-When `experimental_allowed_domains` is set, Claude can only access the domains you explicitly list. You'll need to include the appropriate provider domains based on your authentication method.
-
-### Provider-Specific Examples
-
-#### If using Anthropic API or subscription
-
-```yaml
- uses: anthropics/claude-code-action@v1
-  with:
-    anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
-    # Or: claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
-    experimental_allowed_domains: |
-      .anthropic.com
-```
-
-#### If using AWS Bedrock
-
-```yaml
- uses: anthropics/claude-code-action@v1
-  with:
-    use_bedrock: "true"
-    experimental_allowed_domains: |
-      bedrock.*.amazonaws.com
-      bedrock-runtime.*.amazonaws.com
-```
-
-#### If using Google Vertex AI
-
-```yaml
- uses: anthropics/claude-code-action@v1
-  with:
-    use_vertex: "true"
-    experimental_allowed_domains: |
-      *.googleapis.com
-      vertexai.googleapis.com
-```
-
-### Common GitHub Domains
-
-In addition to your provider domains, you may need to include GitHub-related domains. For GitHub.com users, common domains include:
-
-```yaml
- uses: anthropics/claude-code-action@v1
-  with:
-    anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
-    experimental_allowed_domains: |
-      .anthropic.com  # For Anthropic API
-      .github.com
-      .githubusercontent.com
-      ghcr.io
-      .blob.core.windows.net
-```
-
-For GitHub Enterprise users, replace the GitHub.com domains above with your enterprise domains (e.g., `.github.company.com`, `packages.company.com`, etc.).
-
-To determine which domains your workflow needs, you can temporarily run without restrictions and monitor the network requests, or check your GitHub Enterprise configuration for the specific services you use.
--- a/docs/security.md
+++ b/docs/security.md
@@ -38,7 +38,7 @@ The following permissions are requested but not yet actively used. These will en

 ## Commit Signing

-All commits made by Claude through this action are automatically signed with commit signatures. This ensures the authenticity and integrity of commits, providing a verifiable trail of changes made by the action.
+Commits made by Claude through this action are no longer automatically signed with commit signatures. To enable commit signing set `use_commit_signing: True` in the workflow(s). This ensures the authenticity and integrity of commits, providing a verifiable trail of changes made by the action.

 ## ⚠️ Authentication Protection

--- a/docs/usage.md
+++ b/docs/usage.md
@@ -70,7 +70,6 @@ jobs:
 | `branch_prefix`                  | The prefix to use for Claude branches (defaults to 'claude/', use 'claude-' for dash format)                                                                                           | No       | `claude/`     |
 | `settings`                       | Claude Code settings as JSON string or path to settings JSON file                                                                                                                      | No       | ""            |
 | `additional_permissions`         | Additional permissions to enable. Currently supports 'actions: read' for viewing workflow results                                                                                      | No       | ""            |
-| `experimental_allowed_domains`   | Restrict network access to these domains only (newline-separated).                                                                                                                     | No       | ""            |
 | `use_commit_signing`             | Enable commit signing using GitHub's commit signature verification. When false, Claude uses standard git commands                                                                      | No       | `false`       |
 | `bot_id`                         | GitHub user ID to use for git operations (defaults to Claude's bot ID)                                                                                                                 | No       | `41898282`    |
 | `bot_name`                       | GitHub username to use for git operations (defaults to Claude's bot name)                                                                                                              | No       | `claude[bot]` |
@@ -185,6 +184,74 @@ For a comprehensive guide on migrating from v0.x to v1.0, including step-by-step
      Focus on the changed files in this PR.
 ```

+## Structured Outputs
+
+Get validated JSON results from Claude that automatically become GitHub Action outputs. This enables building complex automation workflows where Claude analyzes data and subsequent steps use the results.
+
+### Basic Example
+
+```yaml
+- name: Detect flaky tests
+  id: analyze
+  uses: anthropics/claude-code-action@v1
+  with:
+    anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+    prompt: |
+      Check the CI logs and determine if this is a flaky test.
+      Return: is_flaky (boolean), confidence (0-1), summary (string)
+    claude_args: |
+      --json-schema '{"type":"object","properties":{"is_flaky":{"type":"boolean"},"confidence":{"type":"number"},"summary":{"type":"string"}},"required":["is_flaky"]}'
+
+- name: Retry if flaky
+  if: fromJSON(steps.analyze.outputs.structured_output).is_flaky == true
+  run: gh workflow run CI
+```
+
+### How It Works
+
+1. **Define Schema**: Provide a JSON schema via `--json-schema` flag in `claude_args`
+2. **Claude Executes**: Claude uses tools to complete your task
+3. **Validated Output**: Result is validated against your schema
+4. **JSON Output**: All fields are returned in a single `structured_output` JSON string
+
+### Accessing Structured Outputs
+
+All structured output fields are available in the `structured_output` output as a JSON string:
+
+**In GitHub Actions expressions:**
+
+```yaml
+if: fromJSON(steps.analyze.outputs.structured_output).is_flaky == true
+run: |
+  CONFIDENCE=${{ fromJSON(steps.analyze.outputs.structured_output).confidence }}
+```
+
+**In bash with jq:**
+
+```yaml
+- name: Process results
+  run: |
+    OUTPUT='${{ steps.analyze.outputs.structured_output }}'
+    IS_FLAKY=$(echo "$OUTPUT" | jq -r '.is_flaky')
+    SUMMARY=$(echo "$OUTPUT" | jq -r '.summary')
+```
+
+**Note**: Due to GitHub Actions limitations, composite actions cannot expose dynamic outputs. All fields are bundled in the single `structured_output` JSON string.
+
+### Complete Example
+
+See `examples/test-failure-analysis.yml` for a working example that:
+
+- Detects flaky test failures
+- Uses confidence thresholds in conditionals
+- Auto-retries workflows
+- Comments on PRs
+
+### Documentation
+
+For complete details on JSON Schema syntax and Agent SDK structured outputs:
+https://docs.claude.com/en/docs/agent-sdk/structured-outputs
+
 ## Ways to Tag @claude

 These examples show how to interact with Claude using comments in PRs and issues. By default, Claude will be triggered anytime you mention `@claude`, but you can customize the exact trigger phrase using the `trigger_phrase` input in the workflow.
--- a/examples/test-failure-analysis.yml
+++ b/examples/test-failure-analysis.yml
@@ -0,0 +1,114 @@
+name: Auto-Retry Flaky Tests
+
+# This example demonstrates using structured outputs to detect flaky test failures
+# and automatically retry them, reducing noise from intermittent failures.
+#
+# Use case: When CI fails, automatically determine if it's likely flaky and retry if so.
+
+on:
+  workflow_run:
+    workflows: ["CI"]
+    types: [completed]
+
+permissions:
+  contents: read
+  actions: write
+
+jobs:
+  detect-flaky:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'failure' }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Detect flaky test failures
+        id: detect
+        uses: anthropics/claude-code-action@main
+        with:
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          prompt: |
+            The CI workflow failed: ${{ github.event.workflow_run.html_url }}
+
+            Check the logs: gh run view ${{ github.event.workflow_run.id }} --log-failed
+
+            Determine if this looks like a flaky test failure by checking for:
+            - Timeout errors
+            - Race conditions
+            - Network errors
+            - "Expected X but got Y" intermittent failures
+            - Tests that passed in previous commits
+
+            Return:
+            - is_flaky: true if likely flaky, false if real bug
+            - confidence: number 0-1 indicating confidence level
+            - summary: brief one-sentence explanation
+          claude_args: |
+            --json-schema '{"type":"object","properties":{"is_flaky":{"type":"boolean","description":"Whether this appears to be a flaky test failure"},"confidence":{"type":"number","minimum":0,"maximum":1,"description":"Confidence level in the determination"},"summary":{"type":"string","description":"One-sentence explanation of the failure"}},"required":["is_flaky","confidence","summary"]}'
+
+      # Auto-retry only if flaky AND high confidence (>= 0.7)
+      - name: Retry flaky tests
+        if: |
+          fromJSON(steps.detect.outputs.structured_output).is_flaky == true &&
+          fromJSON(steps.detect.outputs.structured_output).confidence >= 0.7
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          OUTPUT='${{ steps.detect.outputs.structured_output }}'
+          CONFIDENCE=$(echo "$OUTPUT" | jq -r '.confidence')
+          SUMMARY=$(echo "$OUTPUT" | jq -r '.summary')
+
+          echo "🔄 Flaky test detected (confidence: $CONFIDENCE)"
+          echo "Summary: $SUMMARY"
+          echo ""
+          echo "Triggering automatic retry..."
+
+          gh workflow run "${{ github.event.workflow_run.name }}" \
+            --ref "${{ github.event.workflow_run.head_branch }}"
+
+      # Low confidence flaky detection - skip retry
+      - name: Low confidence detection
+        if: |
+          fromJSON(steps.detect.outputs.structured_output).is_flaky == true &&
+          fromJSON(steps.detect.outputs.structured_output).confidence < 0.7
+        run: |
+          OUTPUT='${{ steps.detect.outputs.structured_output }}'
+          CONFIDENCE=$(echo "$OUTPUT" | jq -r '.confidence')
+
+          echo "⚠️ Possible flaky test but confidence too low ($CONFIDENCE)"
+          echo "Not retrying automatically - manual review recommended"
+
+      # Comment on PR if this was a PR build
+      - name: Comment on PR
+        if: github.event.workflow_run.event == 'pull_request'
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          OUTPUT='${{ steps.detect.outputs.structured_output }}'
+          IS_FLAKY=$(echo "$OUTPUT" | jq -r '.is_flaky')
+          CONFIDENCE=$(echo "$OUTPUT" | jq -r '.confidence')
+          SUMMARY=$(echo "$OUTPUT" | jq -r '.summary')
+
+          pr_number=$(gh pr list --head "${{ github.event.workflow_run.head_branch }}" --json number --jq '.[0].number')
+
+          if [ -n "$pr_number" ]; then
+            if [ "$IS_FLAKY" = "true" ]; then
+              TITLE="🔄 Flaky Test Detected"
+              ACTION="✅ Automatically retrying the workflow"
+            else
+              TITLE="❌ Test Failure"
+              ACTION="⚠️ This appears to be a real bug - manual intervention needed"
+            fi
+
+            gh pr comment "$pr_number" --body "$(cat <<EOF
+          ## $TITLE
+
+          **Analysis**: $SUMMARY
+          **Confidence**: $CONFIDENCE
+
+          $ACTION
+
+          [View workflow run](${{ github.event.workflow_run.html_url }})
+          EOF
+          )"
+          fi
--- a/scripts/setup-network-restrictions.sh
+++ b/scripts/setup-network-restrictions.sh
@@ -1,123 +0,0 @@
-#!/bin/bash
-
-# Setup Network Restrictions with Squid Proxy
-# This script sets up a Squid proxy to restrict network access to whitelisted domains only.
-
-set -e
-
-# Check if experimental_allowed_domains is provided
-if [ -z "$EXPERIMENTAL_ALLOWED_DOMAINS" ]; then
-  echo "ERROR: EXPERIMENTAL_ALLOWED_DOMAINS environment variable is required"
-  exit 1
-fi
-
-# Check required environment variables
-if [ -z "$RUNNER_TEMP" ]; then
-  echo "ERROR: RUNNER_TEMP environment variable is required"
-  exit 1
-fi
-
-if [ -z "$GITHUB_ENV" ]; then
-  echo "ERROR: GITHUB_ENV environment variable is required"
-  exit 1
-fi
-
-echo "Setting up network restrictions with Squid proxy..."
-
-SQUID_START_TIME=$(date +%s.%N)
-
-# Create whitelist file
-echo "$EXPERIMENTAL_ALLOWED_DOMAINS" > $RUNNER_TEMP/whitelist.txt
-
-# Ensure each domain has proper format
-# If domain doesn't start with a dot and isn't an IP, add the dot for subdomain matching
-mv $RUNNER_TEMP/whitelist.txt $RUNNER_TEMP/whitelist.txt.orig
-while IFS= read -r domain; do
-  if [ -n "$domain" ]; then
-    # Trim whitespace
-    domain=$(echo "$domain" | xargs)
-    # If it's not empty and doesn't start with a dot, add one
-    if [[ "$domain" != .* ]] && [[ ! "$domain" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
-      echo ".$domain" >> $RUNNER_TEMP/whitelist.txt
-    else
-      echo "$domain" >> $RUNNER_TEMP/whitelist.txt
-    fi
-  fi
-done < $RUNNER_TEMP/whitelist.txt.orig
-
-# Create Squid config with whitelist
-echo "http_port 3128" > $RUNNER_TEMP/squid.conf
-echo "" >> $RUNNER_TEMP/squid.conf
-echo "# Define ACLs" >> $RUNNER_TEMP/squid.conf
-echo "acl whitelist dstdomain \"/etc/squid/whitelist.txt\"" >> $RUNNER_TEMP/squid.conf
-echo "acl localnet src 127.0.0.1/32" >> $RUNNER_TEMP/squid.conf
-echo "acl localnet src 172.17.0.0/16" >> $RUNNER_TEMP/squid.conf
-echo "acl SSL_ports port 443" >> $RUNNER_TEMP/squid.conf
-echo "acl Safe_ports port 80" >> $RUNNER_TEMP/squid.conf
-echo "acl Safe_ports port 443" >> $RUNNER_TEMP/squid.conf
-echo "acl CONNECT method CONNECT" >> $RUNNER_TEMP/squid.conf
-echo "" >> $RUNNER_TEMP/squid.conf
-echo "# Deny requests to certain unsafe ports" >> $RUNNER_TEMP/squid.conf
-echo "http_access deny !Safe_ports" >> $RUNNER_TEMP/squid.conf
-echo "" >> $RUNNER_TEMP/squid.conf
-echo "# Only allow CONNECT to SSL ports" >> $RUNNER_TEMP/squid.conf
-echo "http_access deny CONNECT !SSL_ports" >> $RUNNER_TEMP/squid.conf
-echo "" >> $RUNNER_TEMP/squid.conf
-echo "# Allow localhost" >> $RUNNER_TEMP/squid.conf
-echo "http_access allow localhost" >> $RUNNER_TEMP/squid.conf
-echo "" >> $RUNNER_TEMP/squid.conf
-echo "# Allow localnet access to whitelisted domains" >> $RUNNER_TEMP/squid.conf
-echo "http_access allow localnet whitelist" >> $RUNNER_TEMP/squid.conf
-echo "" >> $RUNNER_TEMP/squid.conf
-echo "# Deny everything else" >> $RUNNER_TEMP/squid.conf
-echo "http_access deny all" >> $RUNNER_TEMP/squid.conf
-
-echo "Starting Squid proxy..."
-# First, remove any existing container
-sudo docker rm -f squid-proxy 2>/dev/null || true
-
-# Ensure whitelist file is not empty (Squid fails with empty files)
-if [ ! -s "$RUNNER_TEMP/whitelist.txt" ]; then
-  echo "WARNING: Whitelist file is empty, adding a dummy entry"
-  echo ".example.com" >> $RUNNER_TEMP/whitelist.txt
-fi
-
-# Use sudo to prevent Claude from stopping the container
-CONTAINER_ID=$(sudo docker run -d \
-  --name squid-proxy \
-  -p 127.0.0.1:3128:3128 \
-  -v $RUNNER_TEMP/squid.conf:/etc/squid/squid.conf:ro \
-  -v $RUNNER_TEMP/whitelist.txt:/etc/squid/whitelist.txt:ro \
-  ubuntu/squid:latest 2>&1) || {
-  echo "ERROR: Failed to start Squid container"
-  exit 1
-}
-
-# Wait for proxy to be ready (usually < 1 second)
-READY=false
-for i in {1..30}; do
-  if nc -z 127.0.0.1 3128 2>/dev/null; then
-    TOTAL_TIME=$(echo "scale=3; $(date +%s.%N) - $SQUID_START_TIME" | bc)
-    echo "Squid proxy ready in ${TOTAL_TIME}s"
-    READY=true
-    break
-  fi
-  sleep 0.1
-done
-
-if [ "$READY" != "true" ]; then
-  echo "ERROR: Squid proxy failed to start within 3 seconds"
-  echo "Container logs:"
-  sudo docker logs squid-proxy 2>&1 || true
-  echo "Container status:"
-  sudo docker ps -a | grep squid-proxy || true
-  exit 1
-fi
-
-# Set proxy environment variables
-echo "http_proxy=http://127.0.0.1:3128" >> $GITHUB_ENV
-echo "https_proxy=http://127.0.0.1:3128" >> $GITHUB_ENV
-echo "HTTP_PROXY=http://127.0.0.1:3128" >> $GITHUB_ENV
-echo "HTTPS_PROXY=http://127.0.0.1:3128" >> $GITHUB_ENV
-
-echo "Network restrictions setup completed successfully"
--- a/src/entrypoints/collect-inputs.ts
+++ b/src/entrypoints/collect-inputs.ts
@@ -26,7 +26,6 @@ export function collectActionInputsPresence(): void {
    max_turns: "",
    use_sticky_comment: "false",
    use_commit_signing: "false",
-    experimental_allowed_domains: "",
  };

  const allInputsJson = process.env.ALL_INPUTS;
--- a/src/github/api/queries/github.ts
+++ b/src/github/api/queries/github.ts
@@ -13,6 +13,8 @@ export const PR_QUERY = `
        headRefName
        headRefOid
        createdAt
+        updatedAt
+        lastEditedAt
        additions
        deletions
        state
@@ -96,6 +98,8 @@ export const ISSUE_QUERY = `
          login
        }
        createdAt
+        updatedAt
+        lastEditedAt
        state
        comments(first: 100) {
          nodes {
--- a/src/github/data/fetcher.ts
+++ b/src/github/data/fetcher.ts
@@ -107,6 +107,38 @@ export function filterReviewsToTriggerTime<
  });
 }

+/**
+ * Checks if the issue/PR body was edited after the trigger time.
+ * This prevents a race condition where an attacker could edit the issue/PR body
+ * between when an authorized user triggered Claude and when Claude processes the request.
+ *
+ * @param contextData - The PR or issue data containing body and edit timestamps
+ * @param triggerTime - ISO timestamp of when the trigger event occurred
+ * @returns true if the body is safe to use, false if it was edited after trigger
+ */
+export function isBodySafeToUse(
+  contextData: { createdAt: string; updatedAt?: string; lastEditedAt?: string },
+  triggerTime: string | undefined,
+): boolean {
+  // If no trigger time is available, we can't validate - allow the body
+  // This maintains backwards compatibility for triggers that don't have timestamps
+  if (!triggerTime) return true;
+
+  const triggerTimestamp = new Date(triggerTime).getTime();
+
+  // Check if the body was edited after the trigger
+  // Use lastEditedAt if available (more accurate for body edits), otherwise fall back to updatedAt
+  const lastEditTime = contextData.lastEditedAt || contextData.updatedAt;
+  if (lastEditTime) {
+    const lastEditTimestamp = new Date(lastEditTime).getTime();
+    if (lastEditTimestamp >= triggerTimestamp) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
 type FetchDataParams = {
  octokits: Octokits;
  repository: string;
@@ -273,9 +305,13 @@ export async function fetchGitHubData({
      body: c.body,
    }));

-  // Add the main issue/PR body if it has content
-  const mainBody: CommentWithImages[] = contextData.body
-    ? [
+  // Add the main issue/PR body if it has content and wasn't edited after trigger
+  // This prevents a TOCTOU race condition where an attacker could edit the body
+  // between when an authorized user triggered Claude and when Claude processes the request
+  let mainBody: CommentWithImages[] = [];
+  if (contextData.body) {
+    if (isBodySafeToUse(contextData, triggerTime)) {
+      mainBody = [
        {
          ...(isPR
            ? {
@@ -289,8 +325,14 @@ export async function fetchGitHubData({
                body: contextData.body,
              }),
        },
-      ]
-    : [];
+      ];
+    } else {
+      console.warn(
+        `Security: ${isPR ? "PR" : "Issue"} #${prNumber} body was edited after the trigger event. ` +
+          `Excluding body content to prevent potential injection attacks.`,
+      );
+    }
+  }

  const allComments = [
    ...mainBody,
--- a/src/github/types.ts
+++ b/src/github/types.ts
@@ -58,6 +58,8 @@ export type GitHubPullRequest = {
  headRefName: string;
  headRefOid: string;
  createdAt: string;
+  updatedAt?: string;
+  lastEditedAt?: string;
  additions: number;
  deletions: number;
  state: string;
@@ -83,6 +85,8 @@ export type GitHubIssue = {
  body: string;
  author: GitHubAuthor;
  createdAt: string;
+  updatedAt?: string;
+  lastEditedAt?: string;
  state: string;
  comments: {
    nodes: GitHubComment[];
--- a/test/data-fetcher.test.ts
+++ b/test/data-fetcher.test.ts
@@ -4,6 +4,7 @@ import {
  fetchGitHubData,
  filterCommentsToTriggerTime,
  filterReviewsToTriggerTime,
+  isBodySafeToUse,
 } from "../src/github/data/fetcher";
 import {
  createMockContext,
@@ -371,6 +372,139 @@ describe("filterReviewsToTriggerTime", () => {
  });
 });

+describe("isBodySafeToUse", () => {
+  const triggerTime = "2024-01-15T12:00:00Z";
+
+  const createMockContextData = (
+    createdAt: string,
+    updatedAt?: string,
+    lastEditedAt?: string,
+  ) => ({
+    createdAt,
+    updatedAt,
+    lastEditedAt,
+  });
+
+  describe("body edit time validation", () => {
+    it("should return true when body was never edited", () => {
+      const contextData = createMockContextData("2024-01-15T10:00:00Z");
+      expect(isBodySafeToUse(contextData, triggerTime)).toBe(true);
+    });
+
+    it("should return true when body was edited before trigger time", () => {
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T11:00:00Z",
+        "2024-01-15T11:30:00Z",
+      );
+      expect(isBodySafeToUse(contextData, triggerTime)).toBe(true);
+    });
+
+    it("should return false when body was edited after trigger time (using updatedAt)", () => {
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T13:00:00Z",
+      );
+      expect(isBodySafeToUse(contextData, triggerTime)).toBe(false);
+    });
+
+    it("should return false when body was edited after trigger time (using lastEditedAt)", () => {
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        undefined,
+        "2024-01-15T13:00:00Z",
+      );
+      expect(isBodySafeToUse(contextData, triggerTime)).toBe(false);
+    });
+
+    it("should return false when body was edited exactly at trigger time", () => {
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T12:00:00Z",
+      );
+      expect(isBodySafeToUse(contextData, triggerTime)).toBe(false);
+    });
+
+    it("should prioritize lastEditedAt over updatedAt", () => {
+      // updatedAt is after trigger, but lastEditedAt is before - should be safe
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T13:00:00Z", // updatedAt after trigger
+        "2024-01-15T11:00:00Z", // lastEditedAt before trigger
+      );
+      expect(isBodySafeToUse(contextData, triggerTime)).toBe(true);
+    });
+  });
+
+  describe("edge cases", () => {
+    it("should return true when no trigger time is provided (backward compatibility)", () => {
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T13:00:00Z", // Would normally fail
+        "2024-01-15T14:00:00Z", // Would normally fail
+      );
+      expect(isBodySafeToUse(contextData, undefined)).toBe(true);
+    });
+
+    it("should handle millisecond precision correctly", () => {
+      // Edit 1ms after trigger - should be unsafe
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T12:00:00.001Z",
+      );
+      expect(isBodySafeToUse(contextData, triggerTime)).toBe(false);
+    });
+
+    it("should handle edit 1ms before trigger - should be safe", () => {
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T11:59:59.999Z",
+      );
+      expect(isBodySafeToUse(contextData, triggerTime)).toBe(true);
+    });
+
+    it("should handle various ISO timestamp formats", () => {
+      const contextData1 = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T11:00:00Z",
+      );
+      const contextData2 = createMockContextData(
+        "2024-01-15T10:00:00+00:00",
+        "2024-01-15T11:00:00+00:00",
+      );
+      const contextData3 = createMockContextData(
+        "2024-01-15T10:00:00.000Z",
+        "2024-01-15T11:00:00.000Z",
+      );
+
+      expect(isBodySafeToUse(contextData1, triggerTime)).toBe(true);
+      expect(isBodySafeToUse(contextData2, triggerTime)).toBe(true);
+      expect(isBodySafeToUse(contextData3, triggerTime)).toBe(true);
+    });
+  });
+
+  describe("security scenarios", () => {
+    it("should detect race condition attack - body edited between trigger and processing", () => {
+      // Simulates: Owner triggers @claude at 12:00, attacker edits body at 12:00:30
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z", // Issue created
+        "2024-01-15T12:00:30Z", // Body edited after trigger
+      );
+      expect(isBodySafeToUse(contextData, "2024-01-15T12:00:00Z")).toBe(false);
+    });
+
+    it("should allow body that was stable at trigger time", () => {
+      // Body was last edited well before the trigger
+      const contextData = createMockContextData(
+        "2024-01-15T10:00:00Z",
+        "2024-01-15T10:30:00Z",
+        "2024-01-15T10:30:00Z",
+      );
+      expect(isBodySafeToUse(contextData, "2024-01-15T12:00:00Z")).toBe(true);
+    });
+  });
+});
+
 describe("fetchGitHubData integration with time filtering", () => {
  it("should filter comments based on trigger time when provided", async () => {
    const mockOctokits = {
@@ -696,4 +830,119 @@ describe("fetchGitHubData integration with time filtering", () => {
    // All three comments should be included as they're all before trigger time
    expect(result.comments.length).toBe(3);
  });
+
+  it("should exclude issue body when edited after trigger time (TOCTOU protection)", async () => {
+    const mockOctokits = {
+      graphql: jest.fn().mockResolvedValue({
+        repository: {
+          issue: {
+            number: 555,
+            title: "Test Issue",
+            body: "Malicious body edited after trigger",
+            author: { login: "attacker" },
+            createdAt: "2024-01-15T10:00:00Z",
+            updatedAt: "2024-01-15T12:30:00Z", // Edited after trigger
+            lastEditedAt: "2024-01-15T12:30:00Z", // Edited after trigger
+            comments: { nodes: [] },
+          },
+        },
+        user: { login: "trigger-user" },
+      }),
+      rest: jest.fn() as any,
+    };
+
+    const result = await fetchGitHubData({
+      octokits: mockOctokits as any,
+      repository: "test-owner/test-repo",
+      prNumber: "555",
+      isPR: false,
+      triggerUsername: "trigger-user",
+      triggerTime: "2024-01-15T12:00:00Z",
+    });
+
+    // The body should be excluded from image processing due to TOCTOU protection
+    // We can verify this by checking that issue_body is NOT in the imageUrlMap keys
+    const hasIssueBodyInMap = Array.from(result.imageUrlMap.keys()).some(
+      (key) => key.includes("issue_body"),
+    );
+    expect(hasIssueBodyInMap).toBe(false);
+  });
+
+  it("should include issue body when not edited after trigger time", async () => {
+    const mockOctokits = {
+      graphql: jest.fn().mockResolvedValue({
+        repository: {
+          issue: {
+            number: 666,
+            title: "Test Issue",
+            body: "Safe body not edited after trigger",
+            author: { login: "author" },
+            createdAt: "2024-01-15T10:00:00Z",
+            updatedAt: "2024-01-15T11:00:00Z", // Edited before trigger
+            lastEditedAt: "2024-01-15T11:00:00Z", // Edited before trigger
+            comments: { nodes: [] },
+          },
+        },
+        user: { login: "trigger-user" },
+      }),
+      rest: jest.fn() as any,
+    };
+
+    const result = await fetchGitHubData({
+      octokits: mockOctokits as any,
+      repository: "test-owner/test-repo",
+      prNumber: "666",
+      isPR: false,
+      triggerUsername: "trigger-user",
+      triggerTime: "2024-01-15T12:00:00Z",
+    });
+
+    // The contextData should still contain the body
+    expect(result.contextData.body).toBe("Safe body not edited after trigger");
+  });
+
+  it("should exclude PR body when edited after trigger time (TOCTOU protection)", async () => {
+    const mockOctokits = {
+      graphql: jest.fn().mockResolvedValue({
+        repository: {
+          pullRequest: {
+            number: 777,
+            title: "Test PR",
+            body: "Malicious PR body edited after trigger",
+            author: { login: "attacker" },
+            baseRefName: "main",
+            headRefName: "feature",
+            headRefOid: "abc123",
+            createdAt: "2024-01-15T10:00:00Z",
+            updatedAt: "2024-01-15T12:30:00Z", // Edited after trigger
+            lastEditedAt: "2024-01-15T12:30:00Z", // Edited after trigger
+            additions: 10,
+            deletions: 5,
+            state: "OPEN",
+            commits: { totalCount: 1, nodes: [] },
+            files: { nodes: [] },
+            comments: { nodes: [] },
+            reviews: { nodes: [] },
+          },
+        },
+        user: { login: "trigger-user" },
+      }),
+      rest: jest.fn() as any,
+    };
+
+    const result = await fetchGitHubData({
+      octokits: mockOctokits as any,
+      repository: "test-owner/test-repo",
+      prNumber: "777",
+      isPR: true,
+      triggerUsername: "trigger-user",
+      triggerTime: "2024-01-15T12:00:00Z",
+    });
+
+    // The body should be excluded from image processing due to TOCTOU protection
+    const hasPrBodyInMap = Array.from(result.imageUrlMap.keys()).some((key) =>
+      key.includes("pr_body"),
+    );
+    expect(hasPrBodyInMap).toBe(false);
+  });
 });
Author	SHA1	Message	Date
Ashwin Bhat	6337623ebb	fix: prevent TOCTOU race condition on issue/PR body edits (#710 ) Add trigger-time validation for issue/PR body content to prevent attackers from exploiting a race condition where they edit the body between when an authorized user triggers @claude and when Claude processes the request. The existing filterCommentsToTriggerTime() already protected comments - this extends the same pattern to the main issue/PR body via isBodySafeToUse(). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude <noreply@anthropic.com>	2025-12-01 07:59:39 -08:00
GitHub Actions	6d79044f1d	chore: bump Claude Code version to 2.0.55	2025-11-27 00:01:22 +00:00
Ashwin Bhat	a7e4c51380	fix: use cross-platform timeout for Claude Code installation (#700 ) The GNU `timeout` command is not available on macOS. Check if it exists and use it when available, otherwise run without timeout. Also extracts the version into a CLAUDE_CODE_VERSION variable for easier maintenance. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude <noreply@anthropic.com>	2025-11-24 20:57:33 -05:00
Ashwin Bhat	7febbb006b	Remove experimental allowed domains feature (#697 ) * chore: remove experimental allowed domains feature Remove the experimental_allowed_domains feature which was used to restrict network access via a Squid proxy. This removes: - The input definition from action.yml - The Network Restrictions workflow step - The setup-network-restrictions.sh script - Documentation from experimental.md, usage.md, and related files - The input default from collect-inputs.ts * chore: fix formatting with prettier Co-authored-by: Ashwin Bhat <ashwin-ant@users.noreply.github.com> --------- Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com> Co-authored-by: Ashwin Bhat <ashwin-ant@users.noreply.github.com>	2025-11-24 19:03:53 -05:00
Ashwin Bhat	798cf0988d	chore: add retry loop to Claude Code installation (#694 ) * chore: add --debug and retry loop to Claude Code installation Adds 2-minute timeout with up to 3 retry attempts for installation. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * fix: remove unsupported --debug flag from install script 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com>	2025-11-21 16:52:35 -08:00
GitHub Actions	8458f4399d	chore: bump Claude Code version to 2.0.50	2025-11-21 23:16:27 +00:00
GitHub Actions	f9b2917716	chore: bump Claude Code version to 2.0.49	2025-11-21 01:31:39 +00:00
Ashwin Bhat	f092d4cefd	feat: add Microsoft Foundry provider support (#684 ) * feat: add Azure AI Foundry provider support Add support for Azure AI Foundry as a fourth cloud provider option alongside Anthropic API, AWS Bedrock, and Google Vertex AI. Changes: - Add use_foundry input to enable Azure AI Foundry authentication - Add Azure environment variables (ANTHROPIC_FOUNDRY_RESOURCE, ANTHROPIC_FOUNDRY_API_KEY, ANTHROPIC_FOUNDRY_BASE_URL) - Support automatic base URL construction from resource name - Add validation logic with mutual exclusivity checks for all providers - Add comprehensive test coverage (7 Azure-specific tests, 3 mutual exclusivity tests) - Add complete Azure AI Foundry documentation with OIDC and API key authentication - Update README to reference Azure AI Foundry support Features: - Primary authentication via Microsoft Entra ID (OIDC) using azure/login action - Optional API key authentication fallback - Custom model deployment name support via ANTHROPIC_DEFAULT__MODEL variables - Clear validation error messages for missing configuration All tests pass (25 validation tests total). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> refactor: rename Azure AI Foundry to Microsoft Foundry and remove API key support - Rename all references from "Azure AI Foundry" to "Microsoft Foundry" - Remove ANTHROPIC_FOUNDRY_API_KEY support (OIDC only) - Update documentation to reflect OIDC-only authentication - Update tests to remove API key test case 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * docs: simplify Microsoft Foundry setup and remove URL auto-construction - Link to official docs instead of duplicating setup instructions - Remove automatic base URL construction from resource name - Pass ANTHROPIC_FOUNDRY_BASE_URL as-is 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com>	2025-11-20 13:50:13 -08:00
Jose Garcia	c2edeab4c3	added: AWS_BEARER_TOKEN_BEDROCK authentication capabilities (#692 )	2025-11-20 13:47:12 -08:00
Ashwin Bhat	4318310481	chore: limit PR review workflow to opened events only (#691 ) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude <noreply@anthropic.com>	2025-11-20 12:09:21 -08:00
Kyle Altendorf	11571151c4	update docs re: commit signing no longer default (#675 ) * update docs re: commit signing no longer default * format	2025-11-20 07:13:10 -08:00
GitHub Actions	70193f466c	chore: bump Claude Code version to 2.0.47	2025-11-19 23:12:47 +00:00
GitHub Actions	9db20ef677	chore: bump Claude Code version to 2.0.46	2025-11-19 04:58:56 +00:00
bogini	6902c227aa	feat: add structured output support via --json-schema argument (#687 ) * feat: add structured output support Add support for Agent SDK structured outputs. New input: json_schema Output: structured_output (JSON string) Access: fromJSON(steps.id.outputs.structured_output).field Docs: https://docs.claude.com/en/docs/agent-sdk/structured-outputs * rm unused * refactor: simplify structured outputs to use claude_args Remove json_schema input in favor of passing --json-schema flag directly in claude_args. This simplifies the interface by treating structured outputs like other CLI flags (--model, --max-turns, etc.) instead of as a special input that gets injected. Users now specify: claude_args: '--json-schema {...}' Instead of separate: json_schema: {...} 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * chore: remove unused json-schema util and revert version - Remove src/utils/json-schema.ts (no longer used after refactor) - Revert Claude Code version from 2.0.45 back to 2.0.42 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com>	2025-11-18 17:18:05 -08:00
GitHub Actions	e45f28fae7	chore: bump Claude Code version to 2.0.45	2025-11-18 16:50:24 +00:00
GitHub Actions	8c4e1e7eb1	chore: bump Claude Code version to 2.0.44	2025-11-18 04:50:59 +00:00