docs: add push event documentation and tests

Address code review feedback:
- Add push event to supported events list in docs/custom-automations.md
- Add auto-rebase example workflow using push events
- Add tests for isPushEvent type guard
- Add tests for push event mode detection
- Add test to verify track_progress throws error for push events

🤖 Generated with [Claude Code](https://claude.ai/code)

.github/workflows/bump-claude-code-version.yml

@@ -1,132 +0,0 @@
-name: Bump Claude Code Version
-
-on:
-  repository_dispatch:
-    types: [bump_claude_code_version]
-  workflow_dispatch:
-    inputs:
-      version:
-        description: "Claude Code version to bump to"
-        required: true
-        type: string
-
-permissions:
-  contents: write
-
-jobs:
-  bump-version:
-    name: Bump Claude Code Version
-    runs-on: ubuntu-latest
-    environment: release
-    timeout-minutes: 5
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 #v4
-        with:
-          token: ${{ secrets.RELEASE_PAT }}
-          fetch-depth: 0
-
-      - name: Get version from event payload
-        id: get_version
-        run: |
-          # Get version from either repository_dispatch or workflow_dispatch
-          if [ "${{ github.event_name }}" = "repository_dispatch" ]; then
-            NEW_VERSION="${CLIENT_PAYLOAD_VERSION}"
-          else
-            NEW_VERSION="${INPUT_VERSION}"
-          fi
-
-          # Sanitize the version to avoid issues enabled by problematic characters
-          NEW_VERSION=$(echo "$NEW_VERSION" | tr -d '`;$(){}[]|&<>' | tr -s ' ' '-')
-
-          if [ -z "$NEW_VERSION" ]; then
-            echo "Error: version not provided"
-            exit 1
-          fi
-          echo "NEW_VERSION=$NEW_VERSION" >> $GITHUB_ENV
-          echo "new_version=$NEW_VERSION" >> $GITHUB_OUTPUT
-        env:
-          INPUT_VERSION: ${{ inputs.version }}
-          CLIENT_PAYLOAD_VERSION: ${{ github.event.client_payload.version }}
-
-      - name: Create branch and update base-action/action.yml
-        run: |
-          # Variables
-          TIMESTAMP=$(date +'%Y%m%d-%H%M%S')
-          BRANCH_NAME="bump-claude-code-${{ env.NEW_VERSION }}-$TIMESTAMP"
-
-          echo "BRANCH_NAME=$BRANCH_NAME" >> $GITHUB_ENV
-
-          # Get the default branch
-          DEFAULT_BRANCH=$(gh api repos/${GITHUB_REPOSITORY} --jq '.default_branch')
-          echo "DEFAULT_BRANCH=$DEFAULT_BRANCH" >> $GITHUB_ENV
-
-          # Get the latest commit SHA from the default branch
-          BASE_SHA=$(gh api repos/${GITHUB_REPOSITORY}/git/refs/heads/$DEFAULT_BRANCH --jq '.object.sha')
-
-          # Create a new branch
-          gh api \
-            --method POST \
-            repos/${GITHUB_REPOSITORY}/git/refs \
-            -f ref="refs/heads/$BRANCH_NAME" \
-            -f sha="$BASE_SHA"
-
-          # Get the current base-action/action.yml content
-          ACTION_CONTENT=$(gh api repos/${GITHUB_REPOSITORY}/contents/base-action/action.yml?ref=$DEFAULT_BRANCH --jq '.content' | base64 -d)
-
-          # Update the Claude Code version in the npm install command
-          UPDATED_CONTENT=$(echo "$ACTION_CONTENT" | sed -E "s/(npm install -g @anthropic-ai\/claude-code@)[0-9]+\.[0-9]+\.[0-9]+/\1${{ env.NEW_VERSION }}/")
-
-          # Verify the change would be made
-          if ! echo "$UPDATED_CONTENT" | grep -q "@anthropic-ai/claude-code@${{ env.NEW_VERSION }}"; then
-            echo "Error: Failed to update Claude Code version in content"
-            exit 1
-          fi
-
-          # Get the current SHA of base-action/action.yml for the update API call
-          FILE_SHA=$(gh api repos/${GITHUB_REPOSITORY}/contents/base-action/action.yml?ref=$DEFAULT_BRANCH --jq '.sha')
-
-          # Create the updated base-action/action.yml content in base64
-          echo "$UPDATED_CONTENT" | base64 > action.yml.b64
-
-          # Commit the updated base-action/action.yml via GitHub API
-          gh api \
-            --method PUT \
-            repos/${GITHUB_REPOSITORY}/contents/base-action/action.yml \
-            -f message="chore: bump Claude Code version to ${{ env.NEW_VERSION }}" \
-            -F content=@action.yml.b64 \
-            -f sha="$FILE_SHA" \
-            -f branch="$BRANCH_NAME"
-
-          echo "Successfully created branch and updated Claude Code version to ${{ env.NEW_VERSION }}"
-        env:
-          GH_TOKEN: ${{ secrets.RELEASE_PAT }}
-          GITHUB_REPOSITORY: ${{ github.repository }}
-
-      - name: Create Pull Request
-        run: |
-          # Determine trigger type for PR body
-          if [ "${{ github.event_name }}" = "repository_dispatch" ]; then
-            TRIGGER_INFO="repository dispatch event"
-          else
-            TRIGGER_INFO="manual workflow dispatch by @${GITHUB_ACTOR}"
-          fi
-
-          # Create PR body with proper YAML escape
-          printf -v PR_BODY "## Bump Claude Code to ${{ env.NEW_VERSION }}\n\nThis PR updates the Claude Code version in base-action/action.yml to ${{ env.NEW_VERSION }}.\n\n### Changes\n- Updated Claude Code version from current to \`${{ env.NEW_VERSION }}\`\n\n### Triggered by\n- $TRIGGER_INFO\n\n🤖 This PR was automatically created by the bump-claude-code-version workflow."
-
-          echo "Creating PR with gh pr create command"
-          PR_URL=$(gh pr create \
-            --repo "${GITHUB_REPOSITORY}" \
-            --title "chore: bump Claude Code version to ${{ env.NEW_VERSION }}" \
-            --body "$PR_BODY" \
-            --base "${DEFAULT_BRANCH}" \
-            --head "${BRANCH_NAME}")
-
-          echo "PR created successfully: $PR_URL"
-        env:
-          GH_TOKEN: ${{ secrets.RELEASE_PAT }}
-          GITHUB_REPOSITORY: ${{ github.repository }}
-          GITHUB_ACTOR: ${{ github.actor }}
-          DEFAULT_BRANCH: ${{ env.DEFAULT_BRANCH }}
-          BRANCH_NAME: ${{ env.BRANCH_NAME }}

.github/workflows/claude.yml

@@ -36,4 +36,4 @@ jobs:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           claude_args: |
             --allowedTools "Bash(bun install),Bash(bun test:*),Bash(bun run format),Bash(bun typecheck)"
-            --model "claude-opus-4-1-20250805"
+            --model "claude-opus-4-5"

action.yml

@@ -93,6 +93,10 @@ 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"
+  include_fix_links:
+    description: "Include 'Fix this' links in PR code review feedback that open Claude Code with context to fix the identified issue"
+    required: false
+    default: "true"
   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
@@ -127,6 +131,9 @@ outputs:
   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 }}
+  session_id:
+    description: "The Claude Code session ID that can be used with --resume to continue this conversation"
+    value: ${{ steps.claude-code.outputs.session_id }}
 
 runs:
   using: "composite"
@@ -177,6 +184,7 @@ runs:
         BOT_ID: ${{ inputs.bot_id }}
         BOT_NAME: ${{ inputs.bot_name }}
         TRACK_PROGRESS: ${{ inputs.track_progress }}
+        INCLUDE_FIX_LINKS: ${{ inputs.include_fix_links }}
         ADDITIONAL_PERMISSIONS: ${{ inputs.additional_permissions }}
         CLAUDE_ARGS: ${{ inputs.claude_args }}
         ALL_INPUTS: ${{ toJson(inputs) }}
@@ -195,7 +203,7 @@ runs:
 
         # Install Claude Code if no custom executable is provided
         if [ -z "$PATH_TO_CLAUDE_CODE_EXECUTABLE" ]; then
-          CLAUDE_CODE_VERSION="2.0.62"
+          CLAUDE_CODE_VERSION="2.0.76"
           echo "Installing Claude Code v${CLAUDE_CODE_VERSION}..."
           for attempt in 1 2 3; do
             echo "Installation attempt $attempt..."
@@ -244,6 +252,7 @@ runs:
 
         # Model configuration
         GITHUB_TOKEN: ${{ steps.prepare.outputs.GITHUB_TOKEN }}
+        GH_TOKEN: ${{ steps.prepare.outputs.GITHUB_TOKEN }}
         NODE_VERSION: ${{ env.NODE_VERSION }}
         DETAILED_PERMISSION_MESSAGES: "1"
 
@@ -293,6 +302,7 @@ runs:
         CLAUDE_COMMENT_ID: ${{ steps.prepare.outputs.claude_comment_id }}
         GITHUB_RUN_ID: ${{ github.run_id }}
         GITHUB_TOKEN: ${{ steps.prepare.outputs.GITHUB_TOKEN }}
+        GH_TOKEN: ${{ steps.prepare.outputs.GITHUB_TOKEN }}
         GITHUB_EVENT_NAME: ${{ github.event_name }}
         TRIGGER_COMMENT_ID: ${{ github.event.comment.id }}
         CLAUDE_BRANCH: ${{ steps.prepare.outputs.CLAUDE_BRANCH }}

base-action/action.yml

@@ -82,6 +82,9 @@ outputs:
   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 }}
+  session_id:
+    description: "The Claude Code session ID that can be used with --resume to continue this conversation"
+    value: ${{ steps.run_claude.outputs.session_id }}
 
 runs:
   using: "composite"
@@ -121,7 +124,7 @@ runs:
         PATH_TO_CLAUDE_CODE_EXECUTABLE: ${{ inputs.path_to_claude_code_executable }}
       run: |
         if [ -z "$PATH_TO_CLAUDE_CODE_EXECUTABLE" ]; then
-          CLAUDE_CODE_VERSION="2.0.62"
+          CLAUDE_CODE_VERSION="2.0.76"
           echo "Installing Claude Code v${CLAUDE_CODE_VERSION}..."
           for attempt in 1 2 3; do
             echo "Installation attempt $attempt..."

base-action/bun.lock

@@ -1,11 +1,12 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "@anthropic-ai/claude-code-base-action",
       "dependencies": {
         "@actions/core": "^1.10.1",
-        "@anthropic-ai/claude-agent-sdk": "^0.1.52",
+        "@anthropic-ai/claude-agent-sdk": "^0.1.76",
         "shell-quote": "^1.8.3",
       },
       "devDependencies": {
@@ -26,7 +27,7 @@
 
     "@actions/io": ["@actions/io@1.1.3", "", {}, "sha512-wi9JjgKLYS7U/z8PPbco+PvTb/nRWjeoFlJ1Qer83k/3C5PHQi28hiVdeE2kHXmIL99mQFawx8qt/JPjZilJ8Q=="],
 
-    "@anthropic-ai/claude-agent-sdk": ["@anthropic-ai/claude-agent-sdk@0.1.52", "", { "optionalDependencies": { "@img/sharp-darwin-arm64": "^0.33.5", "@img/sharp-darwin-x64": "^0.33.5", "@img/sharp-linux-arm": "^0.33.5", "@img/sharp-linux-arm64": "^0.33.5", "@img/sharp-linux-x64": "^0.33.5", "@img/sharp-linuxmusl-arm64": "^0.33.5", "@img/sharp-linuxmusl-x64": "^0.33.5", "@img/sharp-win32-x64": "^0.33.5" }, "peerDependencies": { "zod": "^3.24.1" } }, "sha512-yF8N05+9NRbqYA/h39jQ726HTQFrdXXp7pEfDNKIJ2c4FdWvEjxBA/8ciZIebN6/PyvGDcbEp3yq2Co4rNpg6A=="],
+    "@anthropic-ai/claude-agent-sdk": ["@anthropic-ai/claude-agent-sdk@0.1.76", "", { "optionalDependencies": { "@img/sharp-darwin-arm64": "^0.33.5", "@img/sharp-darwin-x64": "^0.33.5", "@img/sharp-linux-arm": "^0.33.5", "@img/sharp-linux-arm64": "^0.33.5", "@img/sharp-linux-x64": "^0.33.5", "@img/sharp-linuxmusl-arm64": "^0.33.5", "@img/sharp-linuxmusl-x64": "^0.33.5", "@img/sharp-win32-x64": "^0.33.5" }, "peerDependencies": { "zod": "^3.24.1 || ^4.0.0" } }, "sha512-s7RvpXoFaLXLG7A1cJBAPD8ilwOhhc/12fb5mJXRuD561o4FmPtQ+WRfuy9akMmrFRfLsKv8Ornw3ClGAPL2fw=="],
 
     "@fastify/busboy": ["@fastify/busboy@2.1.1", "", {}, "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA=="],
 

base-action/package.json

@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "@actions/core": "^1.10.1",
-    "@anthropic-ai/claude-agent-sdk": "^0.1.52",
+    "@anthropic-ai/claude-agent-sdk": "^0.1.76",
     "shell-quote": "^1.8.3"
   },
   "devDependencies": {

base-action/src/parse-sdk-options.ts

@@ -12,12 +12,79 @@ export type ParsedSdkOptions = {
 };
 
 // Flags that should accumulate multiple values instead of overwriting
-const ACCUMULATING_FLAGS = new Set(["allowedTools", "disallowedTools"]);
+// Include both camelCase and hyphenated variants for CLI compatibility
+const ACCUMULATING_FLAGS = new Set([
+  "allowedTools",
+  "allowed-tools",
+  "disallowedTools",
+  "disallowed-tools",
+  "mcp-config",
+]);
+
+// Delimiter used to join accumulated flag values
+const ACCUMULATE_DELIMITER = "\x00";
+
+type McpConfig = {
+  mcpServers?: Record<string, unknown>;
+};
+
+/**
+ * Merge multiple MCP config values into a single config.
+ * Each config can be a JSON string or a file path.
+ * For JSON strings, mcpServers objects are merged.
+ * For file paths, they are kept as-is (user's file takes precedence and is used last).
+ */
+function mergeMcpConfigs(configValues: string[]): string {
+  const merged: McpConfig = { mcpServers: {} };
+  let lastFilePath: string | null = null;
+
+  for (const config of configValues) {
+    const trimmed = config.trim();
+    if (!trimmed) continue;
+
+    // Check if it's a JSON string (starts with {) or a file path
+    if (trimmed.startsWith("{")) {
+      try {
+        const parsed = JSON.parse(trimmed) as McpConfig;
+        if (parsed.mcpServers) {
+          Object.assign(merged.mcpServers!, parsed.mcpServers);
+        }
+      } catch {
+        // If JSON parsing fails, treat as file path
+        lastFilePath = trimmed;
+      }
+    } else {
+      // It's a file path - store it to handle separately
+      lastFilePath = trimmed;
+    }
+  }
+
+  // If we have file paths, we need to keep the merged JSON and let the file
+  // be handled separately. Since we can only return one value, merge what we can.
+  // If there's a file path, we need a different approach - read the file at runtime.
+  // For now, if there's a file path, we'll stringify the merged config.
+  // The action prepends its config as JSON, so we can safely merge inline JSON configs.
+
+  // If no inline configs were found (all file paths), return the last file path
+  if (Object.keys(merged.mcpServers!).length === 0 && lastFilePath) {
+    return lastFilePath;
+  }
+
+  // Note: If user passes a file path, we cannot merge it at parse time since
+  // we don't have access to the file system here. The action's built-in MCP
+  // servers are always passed as inline JSON, so they will be merged.
+  // If user also passes inline JSON, it will be merged.
+  // If user passes a file path, they should ensure it includes all needed servers.
+
+  return JSON.stringify(merged);
+}
 
 /**
  * Parse claudeArgs string into extraArgs record for SDK pass-through
  * The SDK/CLI will handle --mcp-config, --json-schema, etc.
- * For allowedTools and disallowedTools, multiple occurrences are accumulated (comma-joined).
+ * For allowedTools and disallowedTools, multiple occurrences are accumulated (null-char joined).
+ * Accumulating flags also consume all consecutive non-flag values
+ * (e.g., --allowed-tools "Tool1" "Tool2" "Tool3" captures all three).
  */
 function parseClaudeArgsToExtraArgs(
   claudeArgs?: string,
@@ -37,13 +104,25 @@ function parseClaudeArgsToExtraArgs(
 
       // Check if next arg is a value (not another flag)
       if (nextArg && !nextArg.startsWith("--")) {
-        // For accumulating flags, join multiple values with commas
-        if (ACCUMULATING_FLAGS.has(flag) && result[flag]) {
-          result[flag] = `${result[flag]},${nextArg}`;
+        // For accumulating flags, consume all consecutive non-flag values
+        // This handles: --allowed-tools "Tool1" "Tool2" "Tool3"
+        if (ACCUMULATING_FLAGS.has(flag)) {
+          const values: string[] = [];
+          while (i + 1 < args.length && !args[i + 1]?.startsWith("--")) {
+            i++;
+            values.push(args[i]!);
+          }
+          const joinedValues = values.join(ACCUMULATE_DELIMITER);
+          if (result[flag]) {
+            result[flag] =
+              `${result[flag]}${ACCUMULATE_DELIMITER}${joinedValues}`;
+          } else {
+            result[flag] = joinedValues;
+          }
         } else {
           result[flag] = nextArg;
+          i++; // Skip the value
         }
-        i++; // Skip the value
       } else {
         result[flag] = null; // Boolean flag
       }
@@ -68,12 +147,23 @@ export function parseSdkOptions(options: ClaudeOptions): ParsedSdkOptions {
   // Detect if --json-schema is present (for hasJsonSchema flag)
   const hasJsonSchema = "json-schema" in extraArgs;
 
-  // Extract and merge allowedTools from both sources:
+  // Extract and merge allowedTools from all sources:
   // 1. From extraArgs (parsed from claudeArgs - contains tag mode's tools)
+  //    - Check both camelCase (--allowedTools) and hyphenated (--allowed-tools) variants
   // 2. From options.allowedTools (direct input - may be undefined)
   // This prevents duplicate flags being overwritten when claudeArgs contains --allowedTools
-  const extraArgsAllowedTools = extraArgs["allowedTools"]
-    ? extraArgs["allowedTools"].split(",").map((t) => t.trim())
+  const allowedToolsValues = [
+    extraArgs["allowedTools"],
+    extraArgs["allowed-tools"],
+  ]
+    .filter(Boolean)
+    .join(ACCUMULATE_DELIMITER);
+  const extraArgsAllowedTools = allowedToolsValues
+    ? allowedToolsValues
+        .split(ACCUMULATE_DELIMITER)
+        .flatMap((v) => v.split(","))
+        .map((t) => t.trim())
+        .filter(Boolean)
     : [];
   const directAllowedTools = options.allowedTools
     ? options.allowedTools.split(",").map((t) => t.trim())
@@ -82,10 +172,21 @@ export function parseSdkOptions(options: ClaudeOptions): ParsedSdkOptions {
     ...new Set([...extraArgsAllowedTools, ...directAllowedTools]),
   ];
   delete extraArgs["allowedTools"];
+  delete extraArgs["allowed-tools"];
 
-  // Same for disallowedTools
-  const extraArgsDisallowedTools = extraArgs["disallowedTools"]
-    ? extraArgs["disallowedTools"].split(",").map((t) => t.trim())
+  // Same for disallowedTools - check both camelCase and hyphenated variants
+  const disallowedToolsValues = [
+    extraArgs["disallowedTools"],
+    extraArgs["disallowed-tools"],
+  ]
+    .filter(Boolean)
+    .join(ACCUMULATE_DELIMITER);
+  const extraArgsDisallowedTools = disallowedToolsValues
+    ? disallowedToolsValues
+        .split(ACCUMULATE_DELIMITER)
+        .flatMap((v) => v.split(","))
+        .map((t) => t.trim())
+        .filter(Boolean)
     : [];
   const directDisallowedTools = options.disallowedTools
     ? options.disallowedTools.split(",").map((t) => t.trim())
@@ -94,6 +195,17 @@ export function parseSdkOptions(options: ClaudeOptions): ParsedSdkOptions {
     ...new Set([...extraArgsDisallowedTools, ...directDisallowedTools]),
   ];
   delete extraArgs["disallowedTools"];
+  delete extraArgs["disallowed-tools"];
+
+  // Merge multiple --mcp-config values by combining their mcpServers objects
+  // The action prepends its config (github_comment, github_ci, etc.) as inline JSON,
+  // and users may provide their own config as inline JSON or file path
+  if (extraArgs["mcp-config"]) {
+    const mcpConfigValues = extraArgs["mcp-config"].split(ACCUMULATE_DELIMITER);
+    if (mcpConfigValues.length > 1) {
+      extraArgs["mcp-config"] = mergeMcpConfigs(mcpConfigValues);
+    }
+  }
 
   // Build custom environment
   const env: Record<string, string | undefined> = { ...process.env };
@@ -137,10 +249,18 @@ export function parseSdkOptions(options: ClaudeOptions): ParsedSdkOptions {
     extraArgs,
     env,
 
-    // Load settings from all sources to pick up CLI-installed plugins, CLAUDE.md, etc.
-    settingSources: ["user", "project", "local"],
+    // Load settings from sources - prefer user's --setting-sources if provided, otherwise use all sources
+    // This ensures users can override the default behavior (e.g., --setting-sources user to avoid in-repo configs)
+    settingSources: extraArgs["setting-sources"]
+      ? (extraArgs["setting-sources"].split(
+          ",",
+        ) as SdkOptions["settingSources"])
+      : ["user", "project", "local"],
   };
 
+  // Remove setting-sources from extraArgs to avoid passing it twice
+  delete extraArgs["setting-sources"];
+
   return {
     sdkOptions,
     showFullOutput,

base-action/src/run-claude.ts

@@ -124,6 +124,36 @@ export function prepareRunConfig(
   };
 }
 
+/**
+ * Parses session_id from execution file and sets GitHub Action output
+ * Exported for testing
+ */
+export async function parseAndSetSessionId(
+  executionFile: string,
+): Promise<void> {
+  try {
+    const content = await readFile(executionFile, "utf-8");
+    const messages = JSON.parse(content) as {
+      type: string;
+      subtype?: string;
+      session_id?: string;
+    }[];
+
+    // Find the system.init message which contains session_id
+    const initMessage = messages.find(
+      (m) => m.type === "system" && m.subtype === "init",
+    );
+
+    if (initMessage?.session_id) {
+      core.setOutput("session_id", initMessage.session_id);
+      core.info(`Set session_id: ${initMessage.session_id}`);
+    }
+  } catch (error) {
+    // Don't fail the action if session_id extraction fails
+    core.warning(`Failed to extract session_id: ${error}`);
+  }
+}
+
 /**
  * Parses structured_output from execution file and sets GitHub Action outputs
  * Only runs if --json-schema was explicitly provided in claude_args
@@ -167,8 +197,8 @@ export async function parseAndSetStructuredOutputs(
 }
 
 export async function runClaude(promptPath: string, options: ClaudeOptions) {
-  // Feature flag: use SDK path when USE_AGENT_SDK=true
-  const useAgentSdk = process.env.USE_AGENT_SDK === "true";
+  // Feature flag: use SDK path by default, set USE_AGENT_SDK=false to use CLI
+  const useAgentSdk = process.env.USE_AGENT_SDK !== "false";
   console.log(
     `Using ${useAgentSdk ? "Agent SDK" : "CLI"} path (USE_AGENT_SDK=${process.env.USE_AGENT_SDK ?? "unset"})`,
   );
@@ -368,6 +398,9 @@ export async function runClaude(promptPath: string, options: ClaudeOptions) {
 
     core.setOutput("execution_file", EXECUTION_FILE);
 
+    // Extract and set session_id
+    await parseAndSetSessionId(EXECUTION_FILE);
+
     // Parse and set structured outputs only if user provided --json-schema in claude_args
     if (hasJsonSchema) {
       try {

base-action/test/parse-sdk-options.test.ts

@@ -108,6 +108,48 @@ describe("parseSdkOptions", () => {
       expect(result.sdkOptions.extraArgs?.["allowedTools"]).toBeUndefined();
       expect(result.sdkOptions.extraArgs?.["model"]).toBe("claude-3-5-sonnet");
     });
+
+    test("should handle hyphenated --allowed-tools flag", () => {
+      const options: ClaudeOptions = {
+        claudeArgs: '--allowed-tools "Edit,Read,Write"',
+      };
+
+      const result = parseSdkOptions(options);
+
+      expect(result.sdkOptions.allowedTools).toEqual(["Edit", "Read", "Write"]);
+      expect(result.sdkOptions.extraArgs?.["allowed-tools"]).toBeUndefined();
+    });
+
+    test("should accumulate multiple --allowed-tools flags (hyphenated)", () => {
+      // This is the exact scenario from issue #746
+      const options: ClaudeOptions = {
+        claudeArgs:
+          '--allowed-tools "Bash(git log:*)" "Bash(git diff:*)" "Bash(git fetch:*)" "Bash(gh pr:*)"',
+      };
+
+      const result = parseSdkOptions(options);
+
+      expect(result.sdkOptions.allowedTools).toEqual([
+        "Bash(git log:*)",
+        "Bash(git diff:*)",
+        "Bash(git fetch:*)",
+        "Bash(gh pr:*)",
+      ]);
+    });
+
+    test("should handle mixed camelCase and hyphenated allowedTools flags", () => {
+      const options: ClaudeOptions = {
+        claudeArgs: '--allowedTools "Edit,Read" --allowed-tools "Write,Glob"',
+      };
+
+      const result = parseSdkOptions(options);
+
+      // Both should be merged - note: order depends on which key is found first
+      expect(result.sdkOptions.allowedTools).toContain("Edit");
+      expect(result.sdkOptions.allowedTools).toContain("Read");
+      expect(result.sdkOptions.allowedTools).toContain("Write");
+      expect(result.sdkOptions.allowedTools).toContain("Glob");
+    });
   });
 
   describe("disallowedTools merging", () => {
@@ -134,19 +176,129 @@ describe("parseSdkOptions", () => {
     });
   });
 
-  describe("other extraArgs passthrough", () => {
-    test("should pass through mcp-config in extraArgs", () => {
+  describe("mcp-config merging", () => {
+    test("should pass through single mcp-config in extraArgs", () => {
       const options: ClaudeOptions = {
-        claudeArgs: `--mcp-config '{"mcpServers":{}}' --allowedTools "Edit"`,
+        claudeArgs: `--mcp-config '{"mcpServers":{"server1":{"command":"cmd1"}}}'`,
       };
 
       const result = parseSdkOptions(options);
 
       expect(result.sdkOptions.extraArgs?.["mcp-config"]).toBe(
-        '{"mcpServers":{}}',
+        '{"mcpServers":{"server1":{"command":"cmd1"}}}',
       );
     });
 
+    test("should merge multiple mcp-config flags with inline JSON", () => {
+      // Simulates action prepending its config, then user providing their own
+      const options: ClaudeOptions = {
+        claudeArgs: `--mcp-config '{"mcpServers":{"github_comment":{"command":"node","args":["server.js"]}}}' --mcp-config '{"mcpServers":{"user_server":{"command":"custom","args":["run"]}}}'`,
+      };
+
+      const result = parseSdkOptions(options);
+
+      const mcpConfig = JSON.parse(
+        result.sdkOptions.extraArgs?.["mcp-config"] as string,
+      );
+      expect(mcpConfig.mcpServers).toHaveProperty("github_comment");
+      expect(mcpConfig.mcpServers).toHaveProperty("user_server");
+      expect(mcpConfig.mcpServers.github_comment.command).toBe("node");
+      expect(mcpConfig.mcpServers.user_server.command).toBe("custom");
+    });
+
+    test("should merge three mcp-config flags", () => {
+      const options: ClaudeOptions = {
+        claudeArgs: `--mcp-config '{"mcpServers":{"server1":{"command":"cmd1"}}}' --mcp-config '{"mcpServers":{"server2":{"command":"cmd2"}}}' --mcp-config '{"mcpServers":{"server3":{"command":"cmd3"}}}'`,
+      };
+
+      const result = parseSdkOptions(options);
+
+      const mcpConfig = JSON.parse(
+        result.sdkOptions.extraArgs?.["mcp-config"] as string,
+      );
+      expect(mcpConfig.mcpServers).toHaveProperty("server1");
+      expect(mcpConfig.mcpServers).toHaveProperty("server2");
+      expect(mcpConfig.mcpServers).toHaveProperty("server3");
+    });
+
+    test("should handle mcp-config file path when no inline JSON exists", () => {
+      const options: ClaudeOptions = {
+        claudeArgs: `--mcp-config /tmp/user-mcp-config.json`,
+      };
+
+      const result = parseSdkOptions(options);
+
+      expect(result.sdkOptions.extraArgs?.["mcp-config"]).toBe(
+        "/tmp/user-mcp-config.json",
+      );
+    });
+
+    test("should merge inline JSON configs when file path is also present", () => {
+      // When action provides inline JSON and user provides a file path,
+      // the inline JSON configs should be merged (file paths cannot be merged at parse time)
+      const options: ClaudeOptions = {
+        claudeArgs: `--mcp-config '{"mcpServers":{"github_comment":{"command":"node"}}}' --mcp-config '{"mcpServers":{"github_ci":{"command":"node"}}}' --mcp-config /tmp/user-config.json`,
+      };
+
+      const result = parseSdkOptions(options);
+
+      // The inline JSON configs should be merged
+      const mcpConfig = JSON.parse(
+        result.sdkOptions.extraArgs?.["mcp-config"] as string,
+      );
+      expect(mcpConfig.mcpServers).toHaveProperty("github_comment");
+      expect(mcpConfig.mcpServers).toHaveProperty("github_ci");
+    });
+
+    test("should handle mcp-config with other flags", () => {
+      const options: ClaudeOptions = {
+        claudeArgs: `--mcp-config '{"mcpServers":{"server1":{}}}' --model claude-3-5-sonnet --mcp-config '{"mcpServers":{"server2":{}}}'`,
+      };
+
+      const result = parseSdkOptions(options);
+
+      const mcpConfig = JSON.parse(
+        result.sdkOptions.extraArgs?.["mcp-config"] as string,
+      );
+      expect(mcpConfig.mcpServers).toHaveProperty("server1");
+      expect(mcpConfig.mcpServers).toHaveProperty("server2");
+      expect(result.sdkOptions.extraArgs?.["model"]).toBe("claude-3-5-sonnet");
+    });
+
+    test("should handle real-world scenario: action config + user config", () => {
+      // This is the exact scenario from the bug report
+      const actionConfig = JSON.stringify({
+        mcpServers: {
+          github_comment: {
+            command: "node",
+            args: ["github-comment-server.js"],
+          },
+          github_ci: { command: "node", args: ["github-ci-server.js"] },
+        },
+      });
+      const userConfig = JSON.stringify({
+        mcpServers: {
+          my_custom_server: { command: "python", args: ["server.py"] },
+        },
+      });
+
+      const options: ClaudeOptions = {
+        claudeArgs: `--mcp-config '${actionConfig}' --mcp-config '${userConfig}'`,
+      };
+
+      const result = parseSdkOptions(options);
+
+      const mcpConfig = JSON.parse(
+        result.sdkOptions.extraArgs?.["mcp-config"] as string,
+      );
+      // All servers should be present
+      expect(mcpConfig.mcpServers).toHaveProperty("github_comment");
+      expect(mcpConfig.mcpServers).toHaveProperty("github_ci");
+      expect(mcpConfig.mcpServers).toHaveProperty("my_custom_server");
+    });
+  });
+
+  describe("other extraArgs passthrough", () => {
     test("should pass through json-schema in extraArgs", () => {
       const options: ClaudeOptions = {
         claudeArgs: `--json-schema '{"type":"object"}'`,

base-action/test/structured-output.test.ts

@@ -4,7 +4,10 @@ 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 {
+  parseAndSetStructuredOutputs,
+  parseAndSetSessionId,
+} from "../src/run-claude";
 import * as core from "@actions/core";
 
 // Mock execution file path
@@ -35,16 +38,19 @@ async function createMockExecutionFile(
 // Spy on core functions
 let setOutputSpy: any;
 let infoSpy: any;
+let warningSpy: any;
 
 beforeEach(() => {
   setOutputSpy = spyOn(core, "setOutput").mockImplementation(() => {});
   infoSpy = spyOn(core, "info").mockImplementation(() => {});
+  warningSpy = spyOn(core, "warning").mockImplementation(() => {});
 });
 
 describe("parseAndSetStructuredOutputs", () => {
   afterEach(async () => {
     setOutputSpy?.mockRestore();
     infoSpy?.mockRestore();
+    warningSpy?.mockRestore();
     try {
       await unlink(TEST_EXECUTION_FILE);
     } catch {
@@ -156,3 +162,66 @@ describe("parseAndSetStructuredOutputs", () => {
     );
   });
 });
+
+describe("parseAndSetSessionId", () => {
+  afterEach(async () => {
+    setOutputSpy?.mockRestore();
+    infoSpy?.mockRestore();
+    warningSpy?.mockRestore();
+    try {
+      await unlink(TEST_EXECUTION_FILE);
+    } catch {
+      // Ignore if file doesn't exist
+    }
+  });
+
+  test("should extract session_id from system.init message", async () => {
+    const messages = [
+      { type: "system", subtype: "init", session_id: "test-session-123" },
+      { type: "result", cost_usd: 0.01 },
+    ];
+    await writeFile(TEST_EXECUTION_FILE, JSON.stringify(messages));
+
+    await parseAndSetSessionId(TEST_EXECUTION_FILE);
+
+    expect(setOutputSpy).toHaveBeenCalledWith("session_id", "test-session-123");
+    expect(infoSpy).toHaveBeenCalledWith("Set session_id: test-session-123");
+  });
+
+  test("should handle missing session_id gracefully", async () => {
+    const messages = [
+      { type: "system", subtype: "init" },
+      { type: "result", cost_usd: 0.01 },
+    ];
+    await writeFile(TEST_EXECUTION_FILE, JSON.stringify(messages));
+
+    await parseAndSetSessionId(TEST_EXECUTION_FILE);
+
+    expect(setOutputSpy).not.toHaveBeenCalled();
+  });
+
+  test("should handle missing system.init message gracefully", async () => {
+    const messages = [{ type: "result", cost_usd: 0.01 }];
+    await writeFile(TEST_EXECUTION_FILE, JSON.stringify(messages));
+
+    await parseAndSetSessionId(TEST_EXECUTION_FILE);
+
+    expect(setOutputSpy).not.toHaveBeenCalled();
+  });
+
+  test("should handle malformed JSON gracefully with warning", async () => {
+    await writeFile(TEST_EXECUTION_FILE, "{ invalid json");
+
+    await parseAndSetSessionId(TEST_EXECUTION_FILE);
+
+    expect(setOutputSpy).not.toHaveBeenCalled();
+    expect(warningSpy).toHaveBeenCalled();
+  });
+
+  test("should handle non-existent file gracefully with warning", async () => {
+    await parseAndSetSessionId("/nonexistent/file.json");
+
+    expect(setOutputSpy).not.toHaveBeenCalled();
+    expect(warningSpy).toHaveBeenCalled();
+  });
+});

bun.lock

@@ -1,12 +1,13 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "@anthropic-ai/claude-code-action",
       "dependencies": {
         "@actions/core": "^1.10.1",
         "@actions/github": "^6.0.1",
-        "@anthropic-ai/claude-agent-sdk": "^0.1.52",
+        "@anthropic-ai/claude-agent-sdk": "^0.1.76",
         "@modelcontextprotocol/sdk": "^1.11.0",
         "@octokit/graphql": "^8.2.2",
         "@octokit/rest": "^21.1.1",
@@ -36,7 +37,7 @@
 
     "@actions/io": ["@actions/io@1.1.3", "", {}, "sha512-wi9JjgKLYS7U/z8PPbco+PvTb/nRWjeoFlJ1Qer83k/3C5PHQi28hiVdeE2kHXmIL99mQFawx8qt/JPjZilJ8Q=="],
 
-    "@anthropic-ai/claude-agent-sdk": ["@anthropic-ai/claude-agent-sdk@0.1.52", "", { "optionalDependencies": { "@img/sharp-darwin-arm64": "^0.33.5", "@img/sharp-darwin-x64": "^0.33.5", "@img/sharp-linux-arm": "^0.33.5", "@img/sharp-linux-arm64": "^0.33.5", "@img/sharp-linux-x64": "^0.33.5", "@img/sharp-linuxmusl-arm64": "^0.33.5", "@img/sharp-linuxmusl-x64": "^0.33.5", "@img/sharp-win32-x64": "^0.33.5" }, "peerDependencies": { "zod": "^3.24.1" } }, "sha512-yF8N05+9NRbqYA/h39jQ726HTQFrdXXp7pEfDNKIJ2c4FdWvEjxBA/8ciZIebN6/PyvGDcbEp3yq2Co4rNpg6A=="],
+    "@anthropic-ai/claude-agent-sdk": ["@anthropic-ai/claude-agent-sdk@0.1.76", "", { "optionalDependencies": { "@img/sharp-darwin-arm64": "^0.33.5", "@img/sharp-darwin-x64": "^0.33.5", "@img/sharp-linux-arm": "^0.33.5", "@img/sharp-linux-arm64": "^0.33.5", "@img/sharp-linux-x64": "^0.33.5", "@img/sharp-linuxmusl-arm64": "^0.33.5", "@img/sharp-linuxmusl-x64": "^0.33.5", "@img/sharp-win32-x64": "^0.33.5" }, "peerDependencies": { "zod": "^3.24.1 || ^4.0.0" } }, "sha512-s7RvpXoFaLXLG7A1cJBAPD8ilwOhhc/12fb5mJXRuD561o4FmPtQ+WRfuy9akMmrFRfLsKv8Ornw3ClGAPL2fw=="],
 
     "@fastify/busboy": ["@fastify/busboy@2.1.1", "", {}, "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA=="],
 

docs/cloud-providers.md

@@ -7,7 +7,7 @@ You can authenticate with Claude using any of these four methods:
 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).
+For detailed setup instructions for AWS Bedrock and Google Vertex AI, see the [official documentation](https://code.claude.com/docs/en/github-actions#for-aws-bedrock:).
 
 **Note**:
 

docs/custom-automations.md

@@ -21,6 +21,7 @@ This action supports the following GitHub events ([learn more GitHub event trigg
 - `issues` - When issues are opened or assigned
 - `pull_request_review` - When PR reviews are submitted
 - `pull_request_review_comment` - When comments are made on PR reviews
+- `push` - When commits are pushed to a branch
 - `repository_dispatch` - Custom events triggered via API
 - `workflow_dispatch` - Manual workflow triggers (coming soon)
 
@@ -120,3 +121,42 @@ For more control over Claude's behavior, use the `claude_args` input to pass CLI
 ```
 
 This provides full access to Claude Code CLI capabilities while maintaining the simplified action interface.
+
+## Auto-Rebase PRs on Push
+
+Automatically keep PRs up to date when the main branch is updated:
+
+```yaml
+name: Auto-Rebase PRs
+
+on:
+  push:
+    branches: [main]
+
+permissions:
+  contents: write
+  pull-requests: write
+  id-token: write
+
+jobs:
+  rebase-prs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: anthropics/claude-code-action@v1
+        with:
+          prompt: |
+            Find all open PRs that are behind main and merge main into them.
+            For each PR:
+            1. Check out the PR branch
+            2. Merge main into the branch
+            3. Push the updated branch
+
+            Skip any PRs with merge conflicts - just report them.
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+```
+
+This workflow triggers whenever commits are pushed to main and uses Claude to automatically merge main into any stale PR branches, keeping them up to date.

docs/usage.md

@@ -58,6 +58,7 @@ jobs:
 | `claude_code_oauth_token`        | Claude Code OAuth token (alternative to anthropic_api_key)                                                                                                                             | No\*     | -             |
 | `prompt`                         | Instructions for Claude. Can be a direct prompt or custom template for automation workflows                                                                                            | No       | -             |
 | `track_progress`                 | Force tag mode with tracking comments. Only works with specific PR/issue events. Preserves GitHub context                                                                              | No       | `false`       |
+| `include_fix_links`              | Include 'Fix this' links in PR code review feedback that open Claude Code with context to fix the identified issue                                                                     | No       | `true`        |
 | `claude_args`                    | Additional [arguments to pass directly to Claude CLI](https://docs.claude.com/en/docs/claude-code/cli-reference#cli-flags) (e.g., `--max-turns 10 --model claude-4-0-sonnet-20250805`) | No       | ""            |
 | `base_branch`                    | The base branch to use for creating new branches (e.g., 'main', 'develop')                                                                                                             | No       | -             |
 | `use_sticky_comment`             | Use just one comment to deliver PR comments (only applies for pull_request event workflows)                                                                                            | No       | `false`       |

package.json

@@ -12,7 +12,7 @@
   "dependencies": {
     "@actions/core": "^1.10.1",
     "@actions/github": "^6.0.1",
-    "@anthropic-ai/claude-agent-sdk": "^0.1.52",
+    "@anthropic-ai/claude-agent-sdk": "^0.1.76",
     "@modelcontextprotocol/sdk": "^1.11.0",
     "@octokit/graphql": "^8.2.2",
     "@octokit/rest": "^21.1.1",

src/create-prompt/index.ts

@@ -734,7 +734,13 @@ ${eventData.eventName === "issue_comment" || eventData.eventName === "pull_reque
         - Reference specific code sections with file paths and line numbers${eventData.isPR ? `\n      - AFTER reading files and analyzing code, you MUST call mcp__github_comment__update_claude_comment to post your review` : ""}
       - Formulate a concise, technical, and helpful response based on the context.
       - Reference specific code with inline formatting or code blocks.
-      - Include relevant file paths and line numbers when applicable.
+      - Include relevant file paths and line numbers when applicable.${
+        eventData.isPR && context.githubContext?.inputs.includeFixLinks
+          ? `
+      - When identifying issues that could be fixed, include an inline link: [Fix this →](https://claude.ai/code?q=<URI_ENCODED_INSTRUCTIONS>&repo=${context.repository})
+        The query should be URI-encoded and include enough context for Claude Code to understand and fix the issue (file path, line numbers, branch name, what needs to change).`
+          : ""
+      }
       - ${eventData.isPR ? `IMPORTANT: Submit your review feedback by updating the Claude comment using mcp__github_comment__update_claude_comment. This will be displayed as your PR review.` : `Remember that this feedback must be posted to the GitHub comment using mcp__github_comment__update_claude_comment.`}
 
    B. For Straightforward Changes:

src/github/context.ts

@@ -6,6 +6,7 @@ import type {
   PullRequestEvent,
   PullRequestReviewEvent,
   PullRequestReviewCommentEvent,
+  PushEvent,
   WorkflowRunEvent,
 } from "@octokit/webhooks-types";
 import { CLAUDE_APP_BOT_ID, CLAUDE_BOT_LOGIN } from "./constants";
@@ -65,6 +66,7 @@ const AUTOMATION_EVENT_NAMES = [
   "repository_dispatch",
   "schedule",
   "workflow_run",
+  "push",
 ] as const;
 
 // Derive types from constants for better maintainability
@@ -95,6 +97,7 @@ type BaseContext = {
     allowedBots: string;
     allowedNonWriteUsers: string;
     trackProgress: boolean;
+    includeFixLinks: boolean;
   };
 };
 
@@ -111,14 +114,15 @@ export type ParsedGitHubContext = BaseContext & {
   isPR: boolean;
 };
 
-// Context for automation events (workflow_dispatch, repository_dispatch, schedule, workflow_run)
+// Context for automation events (workflow_dispatch, repository_dispatch, schedule, workflow_run, push)
 export type AutomationContext = BaseContext & {
   eventName: AutomationEventName;
   payload:
     | WorkflowDispatchEvent
     | RepositoryDispatchEvent
     | ScheduleEvent
-    | WorkflowRunEvent;
+    | WorkflowRunEvent
+    | PushEvent;
 };
 
 // Union type for all contexts
@@ -150,6 +154,7 @@ export function parseGitHubContext(): GitHubContext {
       allowedBots: process.env.ALLOWED_BOTS ?? "",
       allowedNonWriteUsers: process.env.ALLOWED_NON_WRITE_USERS ?? "",
       trackProgress: process.env.TRACK_PROGRESS === "true",
+      includeFixLinks: process.env.INCLUDE_FIX_LINKS === "true",
     },
   };
 
@@ -233,6 +238,13 @@ export function parseGitHubContext(): GitHubContext {
         payload: context.payload as unknown as WorkflowRunEvent,
       };
     }
+    case "push": {
+      return {
+        ...commonFields,
+        eventName: "push",
+        payload: context.payload as unknown as PushEvent,
+      };
+    }
     default:
       throw new Error(`Unsupported event type: ${context.eventName}`);
   }
@@ -274,6 +286,12 @@ export function isIssuesAssignedEvent(
   return isIssuesEvent(context) && context.eventAction === "assigned";
 }
 
+export function isPushEvent(
+  context: GitHubContext,
+): context is AutomationContext & { payload: PushEvent } {
+  return context.eventName === "push";
+}
+
 // Type guard to check if context is an entity context (has entityNumber and isPR)
 export function isEntityContext(
   context: GitHubContext,

src/github/operations/branch.ts

@@ -6,13 +6,112 @@
  * - For Issues: Create a new branch
  */
 
-import { $ } from "bun";
+import { execFileSync } from "child_process";
 import * as core from "@actions/core";
 import type { ParsedGitHubContext } from "../context";
 import type { GitHubPullRequest } from "../types";
 import type { Octokits } from "../api/client";
 import type { FetchDataResult } from "../data/fetcher";
 
+/**
+ * Validates a git branch name against a strict whitelist pattern.
+ * This prevents command injection by ensuring only safe characters are used.
+ *
+ * Valid branch names:
+ * - Start with alphanumeric character (not dash, to prevent option injection)
+ * - Contain only alphanumeric, forward slash, hyphen, underscore, or period
+ * - Do not start or end with a period
+ * - Do not end with a slash
+ * - Do not contain '..' (path traversal)
+ * - Do not contain '//' (consecutive slashes)
+ * - Do not end with '.lock'
+ * - Do not contain '@{'
+ * - Do not contain control characters or special git characters (~^:?*[\])
+ */
+export function validateBranchName(branchName: string): void {
+  // Check for empty or whitespace-only names
+  if (!branchName || branchName.trim().length === 0) {
+    throw new Error("Branch name cannot be empty");
+  }
+
+  // Check for leading dash (prevents option injection like --help, -x)
+  if (branchName.startsWith("-")) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names cannot start with a dash.`,
+    );
+  }
+
+  // Check for control characters and special git characters (~^:?*[\])
+  // eslint-disable-next-line no-control-regex
+  if (/[\x00-\x1F\x7F ~^:?*[\]\\]/.test(branchName)) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names cannot contain control characters, spaces, or special git characters (~^:?*[\\]).`,
+    );
+  }
+
+  // Strict whitelist pattern: alphanumeric start, then alphanumeric/slash/hyphen/underscore/period
+  const validPattern = /^[a-zA-Z0-9][a-zA-Z0-9/_.-]*$/;
+
+  if (!validPattern.test(branchName)) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names must start with an alphanumeric character and contain only alphanumeric characters, forward slashes, hyphens, underscores, or periods.`,
+    );
+  }
+
+  // Check for leading/trailing periods
+  if (branchName.startsWith(".") || branchName.endsWith(".")) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names cannot start or end with a period.`,
+    );
+  }
+
+  // Check for trailing slash
+  if (branchName.endsWith("/")) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names cannot end with a slash.`,
+    );
+  }
+
+  // Check for consecutive slashes
+  if (branchName.includes("//")) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names cannot contain consecutive slashes.`,
+    );
+  }
+
+  // Additional git-specific validations
+  if (branchName.includes("..")) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names cannot contain '..'`,
+    );
+  }
+
+  if (branchName.endsWith(".lock")) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names cannot end with '.lock'`,
+    );
+  }
+
+  if (branchName.includes("@{")) {
+    throw new Error(
+      `Invalid branch name: "${branchName}". Branch names cannot contain '@{'`,
+    );
+  }
+}
+
+/**
+ * Executes a git command safely using execFileSync to avoid shell interpolation.
+ *
+ * Security: execFileSync passes arguments directly to the git binary without
+ * invoking a shell, preventing command injection attacks where malicious input
+ * could be interpreted as shell commands (e.g., branch names containing `;`, `|`, `&&`).
+ *
+ * @param args - Git command arguments (e.g., ["checkout", "branch-name"])
+ */
+function execGit(args: string[]): void {
+  execFileSync("git", args, { stdio: "inherit" });
+}
+
 export type BranchInfo = {
   baseBranch: string;
   claudeBranch?: string;
@@ -53,14 +152,19 @@ export async function setupBranch(
         `PR #${entityNumber}: ${commitCount} commits, using fetch depth ${fetchDepth}`,
       );
 
+      // Validate branch names before use to prevent command injection
+      validateBranchName(branchName);
+
       // Execute git commands to checkout PR branch (dynamic depth based on PR size)
-      await $`git fetch origin --depth=${fetchDepth} ${branchName}`;
-      await $`git checkout ${branchName} --`;
+      // Using execFileSync instead of shell template literals for security
+      execGit(["fetch", "origin", `--depth=${fetchDepth}`, branchName]);
+      execGit(["checkout", branchName, "--"]);
 
       console.log(`Successfully checked out PR branch for PR #${entityNumber}`);
 
       // For open PRs, we need to get the base branch of the PR
       const baseBranch = prData.baseRefName;
+      validateBranchName(baseBranch);
 
       return {
         baseBranch,
@@ -118,8 +222,9 @@ export async function setupBranch(
 
       // Ensure we're on the source branch
       console.log(`Fetching and checking out source branch: ${sourceBranch}`);
-      await $`git fetch origin ${sourceBranch} --depth=1`;
-      await $`git checkout ${sourceBranch}`;
+      validateBranchName(sourceBranch);
+      execGit(["fetch", "origin", sourceBranch, "--depth=1"]);
+      execGit(["checkout", sourceBranch, "--"]);
 
       // Set outputs for GitHub Actions
       core.setOutput("CLAUDE_BRANCH", newBranch);
@@ -138,11 +243,13 @@ export async function setupBranch(
 
     // Fetch and checkout the source branch first to ensure we branch from the correct base
     console.log(`Fetching and checking out source branch: ${sourceBranch}`);
-    await $`git fetch origin ${sourceBranch} --depth=1`;
-    await $`git checkout ${sourceBranch}`;
+    validateBranchName(sourceBranch);
+    validateBranchName(newBranch);
+    execGit(["fetch", "origin", sourceBranch, "--depth=1"]);
+    execGit(["checkout", sourceBranch, "--"]);
 
     // Create and checkout the new branch from the source branch
-    await $`git checkout -b ${newBranch}`;
+    execGit(["checkout", "-b", newBranch]);
 
     console.log(
       `Successfully created and checked out local branch: ${newBranch}`,

test/install-mcp-server.test.ts

@@ -37,6 +37,7 @@ describe("prepareMcpConfig", () => {
       allowedBots: "",
       allowedNonWriteUsers: "",
       trackProgress: false,
+      includeFixLinks: true,
     },
   };
 

test/mockContext.ts

@@ -25,6 +25,7 @@ const defaultInputs = {
   allowedBots: "",
   allowedNonWriteUsers: "",
   trackProgress: false,
+  includeFixLinks: true,
 };
 
 const defaultRepository = {

test/modes/detector.test.ts

@@ -1,6 +1,7 @@
 import { describe, expect, it } from "bun:test";
 import { detectMode } from "../../src/modes/detector";
 import type { GitHubContext } from "../../src/github/context";
+import { isPushEvent } from "../../src/github/context";
 
 describe("detectMode with enhanced routing", () => {
   const baseContext = {
@@ -25,6 +26,7 @@ describe("detectMode with enhanced routing", () => {
       allowedBots: "",
       allowedNonWriteUsers: "",
       trackProgress: false,
+      includeFixLinks: true,
     },
   };
 
@@ -256,4 +258,65 @@ describe("detectMode with enhanced routing", () => {
       expect(detectMode(context)).toBe("tag");
     });
   });
+
+  describe("Push Events", () => {
+    it("should use agent mode for push events", () => {
+      const context: GitHubContext = {
+        ...baseContext,
+        eventName: "push",
+        payload: {} as any,
+        inputs: { ...baseContext.inputs, prompt: "Merge main into stale PRs" },
+      };
+
+      expect(detectMode(context)).toBe("agent");
+    });
+
+    it("should throw error when track_progress is used with push event", () => {
+      const context: GitHubContext = {
+        ...baseContext,
+        eventName: "push",
+        payload: {} as any,
+        inputs: { ...baseContext.inputs, trackProgress: true },
+      };
+
+      expect(() => detectMode(context)).toThrow(
+        /track_progress is only supported /,
+      );
+    });
+  });
+
+  describe("isPushEvent type guard", () => {
+    it("should return true for push events", () => {
+      const context: GitHubContext = {
+        ...baseContext,
+        eventName: "push",
+        payload: {} as any,
+      };
+
+      expect(isPushEvent(context)).toBe(true);
+    });
+
+    it("should return false for non-push events", () => {
+      const issueContext: GitHubContext = {
+        ...baseContext,
+        eventName: "issues",
+        eventAction: "opened",
+        payload: { issue: { number: 1, body: "Test" } } as any,
+        entityNumber: 1,
+        isPR: false,
+      };
+
+      expect(isPushEvent(issueContext)).toBe(false);
+    });
+
+    it("should return false for workflow_dispatch events", () => {
+      const context: GitHubContext = {
+        ...baseContext,
+        eventName: "workflow_dispatch",
+        payload: {} as any,
+      };
+
+      expect(isPushEvent(context)).toBe(false);
+    });
+  });
 });

test/modes/registry.test.ts

@@ -60,6 +60,15 @@ describe("Mode Registry", () => {
     expect(mode.name).toBe("agent");
   });
 
+  test("getMode auto-detects agent for push event", () => {
+    const pushContext = createMockAutomationContext({
+      eventName: "push",
+    });
+    const mode = getMode(pushContext);
+    expect(mode).toBe(agentMode);
+    expect(mode.name).toBe("agent");
+  });
+
   test("getMode auto-detects agent for repository_dispatch with client_payload", () => {
     const contextWithPayload = createMockAutomationContext({
       eventName: "repository_dispatch",

test/permissions.test.ts

@@ -73,6 +73,7 @@ describe("checkWritePermissions", () => {
       allowedBots: "",
       allowedNonWriteUsers: "",
       trackProgress: false,
+      includeFixLinks: true,
     },
   });
 

test/validate-branch-name.test.ts

@@ -0,0 +1,201 @@
+import { describe, expect, it } from "bun:test";
+import { validateBranchName } from "../src/github/operations/branch";
+
+describe("validateBranchName", () => {
+  describe("valid branch names", () => {
+    it("should accept simple alphanumeric names", () => {
+      expect(() => validateBranchName("main")).not.toThrow();
+      expect(() => validateBranchName("feature123")).not.toThrow();
+      expect(() => validateBranchName("Branch1")).not.toThrow();
+    });
+
+    it("should accept names with hyphens", () => {
+      expect(() => validateBranchName("feature-branch")).not.toThrow();
+      expect(() => validateBranchName("fix-bug-123")).not.toThrow();
+    });
+
+    it("should accept names with underscores", () => {
+      expect(() => validateBranchName("feature_branch")).not.toThrow();
+      expect(() => validateBranchName("fix_bug_123")).not.toThrow();
+    });
+
+    it("should accept names with forward slashes", () => {
+      expect(() => validateBranchName("feature/new-thing")).not.toThrow();
+      expect(() => validateBranchName("user/feature/branch")).not.toThrow();
+    });
+
+    it("should accept names with periods", () => {
+      expect(() => validateBranchName("v1.0.0")).not.toThrow();
+      expect(() => validateBranchName("release.1.2.3")).not.toThrow();
+    });
+
+    it("should accept typical branch name formats", () => {
+      expect(() =>
+        validateBranchName("claude/issue-123-20250101-1234"),
+      ).not.toThrow();
+      expect(() => validateBranchName("refs/heads/main")).not.toThrow();
+      expect(() => validateBranchName("bugfix/JIRA-1234")).not.toThrow();
+    });
+  });
+
+  describe("command injection attempts", () => {
+    it("should reject shell command substitution with $()", () => {
+      expect(() => validateBranchName("$(whoami)")).toThrow();
+      expect(() => validateBranchName("branch-$(rm -rf /)")).toThrow();
+      expect(() => validateBranchName("test$(cat /etc/passwd)")).toThrow();
+    });
+
+    it("should reject shell command substitution with backticks", () => {
+      expect(() => validateBranchName("`whoami`")).toThrow();
+      expect(() => validateBranchName("branch-`rm -rf /`")).toThrow();
+    });
+
+    it("should reject command chaining with semicolons", () => {
+      expect(() => validateBranchName("branch; rm -rf /")).toThrow();
+      expect(() => validateBranchName("test;whoami")).toThrow();
+    });
+
+    it("should reject command chaining with &&", () => {
+      expect(() => validateBranchName("branch && rm -rf /")).toThrow();
+      expect(() => validateBranchName("test&&whoami")).toThrow();
+    });
+
+    it("should reject command chaining with ||", () => {
+      expect(() => validateBranchName("branch || rm -rf /")).toThrow();
+      expect(() => validateBranchName("test||whoami")).toThrow();
+    });
+
+    it("should reject pipe characters", () => {
+      expect(() => validateBranchName("branch | cat")).toThrow();
+      expect(() => validateBranchName("test|grep password")).toThrow();
+    });
+
+    it("should reject redirection operators", () => {
+      expect(() => validateBranchName("branch > /etc/passwd")).toThrow();
+      expect(() => validateBranchName("branch < input")).toThrow();
+      expect(() => validateBranchName("branch >> file")).toThrow();
+    });
+  });
+
+  describe("option injection attempts", () => {
+    it("should reject branch names starting with dash", () => {
+      expect(() => validateBranchName("-x")).toThrow(
+        /cannot start with a dash/,
+      );
+      expect(() => validateBranchName("--help")).toThrow(
+        /cannot start with a dash/,
+      );
+      expect(() => validateBranchName("-")).toThrow(/cannot start with a dash/);
+      expect(() => validateBranchName("--version")).toThrow(
+        /cannot start with a dash/,
+      );
+      expect(() => validateBranchName("-rf")).toThrow(
+        /cannot start with a dash/,
+      );
+    });
+  });
+
+  describe("path traversal attempts", () => {
+    it("should reject double dot sequences", () => {
+      expect(() => validateBranchName("../../../etc")).toThrow();
+      expect(() => validateBranchName("branch/../secret")).toThrow(/'\.\.'$/);
+      expect(() => validateBranchName("a..b")).toThrow(/'\.\.'$/);
+    });
+  });
+
+  describe("git-specific invalid patterns", () => {
+    it("should reject @{ sequence", () => {
+      expect(() => validateBranchName("branch@{1}")).toThrow(/@{/);
+      expect(() => validateBranchName("HEAD@{yesterday}")).toThrow(/@{/);
+    });
+
+    it("should reject .lock suffix", () => {
+      expect(() => validateBranchName("branch.lock")).toThrow(/\.lock/);
+      expect(() => validateBranchName("feature.lock")).toThrow(/\.lock/);
+    });
+
+    it("should reject consecutive slashes", () => {
+      expect(() => validateBranchName("feature//branch")).toThrow(
+        /consecutive slashes/,
+      );
+      expect(() => validateBranchName("a//b//c")).toThrow(
+        /consecutive slashes/,
+      );
+    });
+
+    it("should reject trailing slashes", () => {
+      expect(() => validateBranchName("feature/")).toThrow(
+        /cannot end with a slash/,
+      );
+      expect(() => validateBranchName("branch/")).toThrow(
+        /cannot end with a slash/,
+      );
+    });
+
+    it("should reject leading periods", () => {
+      expect(() => validateBranchName(".hidden")).toThrow();
+    });
+
+    it("should reject trailing periods", () => {
+      expect(() => validateBranchName("branch.")).toThrow(
+        /cannot start or end with a period/,
+      );
+    });
+
+    it("should reject special git refspec characters", () => {
+      expect(() => validateBranchName("branch~1")).toThrow();
+      expect(() => validateBranchName("branch^2")).toThrow();
+      expect(() => validateBranchName("branch:ref")).toThrow();
+      expect(() => validateBranchName("branch?")).toThrow();
+      expect(() => validateBranchName("branch*")).toThrow();
+      expect(() => validateBranchName("branch[0]")).toThrow();
+      expect(() => validateBranchName("branch\\path")).toThrow();
+    });
+  });
+
+  describe("control characters and special characters", () => {
+    it("should reject null bytes", () => {
+      expect(() => validateBranchName("branch\x00name")).toThrow();
+    });
+
+    it("should reject other control characters", () => {
+      expect(() => validateBranchName("branch\x01name")).toThrow();
+      expect(() => validateBranchName("branch\x1Fname")).toThrow();
+      expect(() => validateBranchName("branch\x7Fname")).toThrow();
+    });
+
+    it("should reject spaces", () => {
+      expect(() => validateBranchName("branch name")).toThrow();
+      expect(() => validateBranchName("feature branch")).toThrow();
+    });
+
+    it("should reject newlines and tabs", () => {
+      expect(() => validateBranchName("branch\nname")).toThrow();
+      expect(() => validateBranchName("branch\tname")).toThrow();
+    });
+  });
+
+  describe("empty and whitespace", () => {
+    it("should reject empty strings", () => {
+      expect(() => validateBranchName("")).toThrow(/cannot be empty/);
+    });
+
+    it("should reject whitespace-only strings", () => {
+      expect(() => validateBranchName("   ")).toThrow();
+      expect(() => validateBranchName("\t\n")).toThrow();
+    });
+  });
+
+  describe("edge cases", () => {
+    it("should accept single alphanumeric character", () => {
+      expect(() => validateBranchName("a")).not.toThrow();
+      expect(() => validateBranchName("1")).not.toThrow();
+    });
+
+    it("should reject single special characters", () => {
+      expect(() => validateBranchName(".")).toThrow();
+      expect(() => validateBranchName("/")).toThrow();
+      expect(() => validateBranchName("-")).toThrow();
+    });
+  });
+});