Testing the MCP Server Fix

Changes Made

The following files were modified to fix the "undefined" error issue:

src/mcp/github-file-ops-server.ts
- Added error field to error responses
- Added REPO_DIR environment variable support
- Fixed file path resolution
src/mcp/install-mcp-server.ts
- Added REPO_DIR: process.env.GITHUB_WORKSPACE || process.cwd() to MCP server config

Testing Instructions

Step 1: Fork and Push Changes

# 1. Fork the claude-code-action repo on GitHub (use the web UI)

# 2. Clone your fork
git clone https://github.com/YOUR_USERNAME/claude-code-action.git
cd claude-code-action

# 3. Copy the modified files from this directory
cp /Users/lina/code/public1/claude-code-action/src/mcp/github-file-ops-server.ts src/mcp/
cp /Users/lina/code/public1/claude-code-action/src/mcp/install-mcp-server.ts src/mcp/

# 4. Commit and push
git checkout -b fix-mcp-undefined-error
git add src/mcp/github-file-ops-server.ts src/mcp/install-mcp-server.ts
git commit -m "Fix MCP server undefined error and file path resolution"
git push origin fix-mcp-undefined-error

Step 2: Create Test Repository

Create a new repository on GitHub called claude-action-test with this structure:

claude-action-test/
├── .github/
│   └── workflows/
│       └── claude.yml
├── api/
│   └── api/
│       └── sampling/
│           └── stages/
│               └── partial_completion_processing.py
└── README.md

Step 3: Set Up the Test Workflow

Create .github/workflows/claude.yml:

name: Claude Code

on:
  issue_comment:
    types: [created]
  pull_request_review_comment:
    types: [created]

permissions:
  contents: write
  issues: write
  pull-requests: write

jobs:
  claude:
    if: contains(github.event.comment.body, '@claude')
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: YOUR_USERNAME/claude-code-action@fix-mcp-undefined-error
        with:
          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
          github_token: ${{ secrets.GITHUB_TOKEN }}

Step 4: Add Test Files

Create api/api/sampling/stages/partial_completion_processing.py:

# Test file for Claude to modify
def hello():
    print("Original content")

Step 5: Configure and Test

Add your Anthropic API key to the repository secrets:
- Go to Settings > Secrets and variables > Actions
- Add ANTHROPIC_API_KEY
Create a pull request in the test repository

Comment on the PR:

@claude please add error handling to the hello function in api/api/sampling/stages/partial_completion_processing.py

Expected Results

Before Fix: "Error calling tool commit_files: undefined"
After Fix: Should either succeed or show a proper error message like "Error calling tool commit_files: ENOENT: no such file or directory..."

Debugging

Check the GitHub Actions logs:

Go to Actions tab
Click on the workflow run
Look for the error messages in the logs

The fix ensures that:

Error messages are properly formatted (no more "undefined")
Files are read from the correct directory (GITHUB_WORKSPACE)

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