fix: add model parameter support to base-action

- Add model field to ClaudeOptions type
- Pass ANTHROPIC_MODEL env var to runClaude function
- Handle --model argument in prepareRunConfig

This allows the model specified in action.yml to be properly passed
to the Claude CLI command.

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

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -16,16 +16,14 @@ A general-purpose [Claude Code](https://claude.ai/code) action for GitHub PRs an
 
 ## Quickstart
 
-The easiest way to set up this action is through [Claude Code](https://claude.ai/code) in the terminal:
-
-```bash
-claude
-/install-github-app
-```
+The easiest way to set up this action is through [Claude Code](https://claude.ai/code) in the terminal. Just open `claude` and run `/install-github-app`.
 
 This command will guide you through setting up the GitHub app and required secrets.
 
-**Requirements**: You must be a repository admin to install the GitHub app and add secrets.
+**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. If you're using AWS Bedrock, please see the instructions below.
 
 ### Manual Setup (Direct API)
 
@@ -39,27 +37,49 @@ This command will guide you through setting up the GitHub app and required secre
 
 ### Using a Custom GitHub App
 
-If you prefer not to install the official Claude app, you can create your own GitHub App. This is useful when:
+If you prefer not to install the official Claude app, you can create your own GitHub App to use with this action. This gives you complete control over permissions and access.
+
+**When you may want to use a custom GitHub App:**
+
+- You need more restrictive permissions than the official app
 - Organization policies prevent installing third-party apps
-- You need more restrictive permissions
 - You're using AWS Bedrock or Google Vertex AI
 
-**Setup steps:**
+**Steps to create and use a custom GitHub App:**
 
-1. **Create a GitHub App** at https://github.com/settings/apps with these permissions:
-   - Contents: Read & Write
-   - Issues: Read & Write  
-   - Pull requests: Read & Write
+1. **Create a new GitHub App:**
 
-2. **Generate a private key** and download the `.pem` file
+   - Go to https://github.com/settings/apps (for personal apps) or your organization's settings
+   - Click "New GitHub App"
+   - Configure the app with these minimum permissions:
+     - **Repository permissions:**
+       - Contents: Read & Write
+       - Issues: Read & Write
+       - Pull requests: Read & Write
+     - **Account permissions:** None required
+   - Set "Where can this GitHub App be installed?" to your preference
+   - Create the app
 
-3. **Install the app** on your repositories
+2. **Generate and download a private key:**
 
-4. **Add credentials** to repository secrets:
-   - `APP_ID`: Your app's ID
-   - `APP_PRIVATE_KEY`: Contents of the `.pem` file
+   - After creating the app, scroll down to "Private keys"
+   - Click "Generate a private key"
+   - Download the `.pem` file (keep this secure!)
 
-5. **Update your workflow:**
+3. **Install the app on your repository:**
+
+   - Go to the app's settings page
+   - Click "Install App"
+   - Select the repositories where you want to use Claude
+
+4. **Add the app credentials to your repository secrets:**
+
+   - Go to your repository's Settings → Secrets and variables → Actions
+   - Add these secrets:
+     - `APP_ID`: Your GitHub App's ID (found in the app settings)
+     - `APP_PRIVATE_KEY`: The contents of the downloaded `.pem` file
+
+5. **Update your workflow to use the custom app:**
 
    ```yaml
    name: Claude with Custom App
@@ -88,6 +108,11 @@ If you prefer not to install the official Claude app, you can create your own Gi
              # ... other configuration
    ```
 
+**Important notes:**
+
+- The custom app must have read/write permissions for Issues, Pull Requests, and Contents
+- Your app's token will have the exact permissions you configured, nothing more
+
 For more information on creating GitHub Apps, see the [GitHub documentation](https://docs.github.com/en/apps/creating-github-apps).
 
 ## 📚 FAQ
@@ -257,7 +282,10 @@ For example, if your Python MCP server is at `mcp_servers/weather.py`, you would
   ["--directory", "${{ github.workspace }}/mcp_servers/", "run", "weather.py"]
 ```
 
-**Important**: Your custom servers will override any built-in servers with the same name.
+**Important**:
+
+- Always use GitHub Secrets (`${{ secrets.SECRET_NAME }}`) for sensitive values like API keys, tokens, or passwords. Never hardcode secrets directly in the workflow file.
+- Your custom servers will override any built-in servers with the same name.
 
 ## Examples
 
@@ -369,19 +397,11 @@ Perfect for automatically reviewing PRs from new team members, external contribu
 
 ## How It Works
 
-1. **Trigger Detection**: Listens for comments containing the trigger phrase (default: `@claude`), issue assignments, or label applications
-2. **Context Gathering**: Analyzes the PR/issue, comments, code changes, and repository structure
-3. **Smart Responses**: Claude can:
-   - Answer questions about code and architecture
-   - Provide detailed code reviews
-   - Implement requested changes
-   - Fix bugs and add features
-4. **Branch Management**:
-   - Creates new branches for issues
-   - Pushes directly to open PR branches
-   - Creates new branches for closed/merged PRs
-5. **Progress Tracking**: Updates a single comment with checkboxes showing task completion
-6. **Integration**: Works seamlessly with GitHub's PR and issue workflows
+1. **Trigger Detection**: Listens for comments containing the trigger phrase (default: `@claude`) or issue assignment to a specific user
+2. **Context Gathering**: Analyzes the PR/issue, comments, code changes
+3. **Smart Responses**: Either answers questions or implements changes
+4. **Branch Management**: Creates new PRs for human authors, pushes directly for Claude's own PRs
+5. **Communication**: Posts updates at every step to keep you informed
 
 This action is built on top of [`anthropics/claude-code-base-action`](https://github.com/anthropics/claude-code-base-action).
 
@@ -832,6 +852,41 @@ claude_code_oauth_token: "oauth_token_..." # Exposed and vulnerable!
 5. ❌ Never share API keys or tokens in pull requests or issues
 6. ❌ Avoid logging workflow variables that might contain keys
 
+## Security Best Practices
+
+**⚠️ IMPORTANT: Never commit API keys directly to your repository! Always use GitHub Actions secrets.**
+
+To securely use your Anthropic API key:
+
+1. Add your API key as a repository secret:
+
+   - Go to your repository's Settings
+   - Navigate to "Secrets and variables" → "Actions"
+   - Click "New repository secret"
+   - Name it `ANTHROPIC_API_KEY`
+   - Paste your API key as the value
+
+2. Reference the secret in your workflow:
+   ```yaml
+   anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+   ```
+
+**Never do this:**
+
+```yaml
+# ❌ WRONG - Exposes your API key
+anthropic_api_key: "sk-ant-..."
+```
+
+**Always do this:**
+
+```yaml
+# ✅ CORRECT - Uses GitHub secrets
+anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+```
+
+This applies to all sensitive values including API keys, access tokens, and credentials.
+We also recommend that you always use short-lived tokens when possible
 
 ## License
 

action.yml

@@ -193,8 +193,7 @@ runs:
         # Run the base-action
         cd ${GITHUB_ACTION_PATH}/base-action
         bun install
-        cd -
-        bun run ${GITHUB_ACTION_PATH}/base-action/src/index.ts
+        bun run src/index.ts
       env:
         # Base-action inputs
         CLAUDE_CODE_ACTION: "1"

src/create-prompt/index.ts

@@ -694,7 +694,8 @@ What You CANNOT Do:
 - Submit formal GitHub PR reviews
 - Approve pull requests (for security reasons)
 - Post multiple comments (you only update your initial comment)
-- Execute commands outside the repository context${useCommitSigning ? "\n- Run arbitrary Bash commands (unless explicitly allowed via allowed_tools configuration)" : ""}
+- Execute commands outside the repository context
+- Run arbitrary Bash commands (unless explicitly allowed via allowed_tools configuration)
 - Perform branch operations (cannot merge branches, rebase, or perform other git operations beyond pushing commits)
 - Modify files in the .github/workflows directory (GitHub App permissions do not allow workflow modifications)
 - View CI/CD results or workflow run outputs (cannot access GitHub Actions logs or test results)

src/github/operations/branch.ts

@@ -116,11 +116,6 @@ export async function setupBranch(
         `Branch name generated: ${newBranch} (will be created by file ops server on first commit)`,
       );
 
-      // 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}`;
-
       // Set outputs for GitHub Actions
       core.setOutput("CLAUDE_BRANCH", newBranch);
       core.setOutput("BASE_BRANCH", sourceBranch);
@@ -136,12 +131,7 @@ export async function setupBranch(
       `Creating local branch ${newBranch} for ${entityType} #${entityNumber} from source branch: ${sourceBranch}...`,
     );
 
-    // 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}`;
-
-    // Create and checkout the new branch from the source branch
+    // Create and checkout the new branch locally
     await $`git checkout -b ${newBranch}`;
 
     console.log(