CodePeel MCP Server

AI code review tools for Claude Code, Cline, Roo, and other MCP-compatible agents.

What it does

When you're vibe coding with an AI agent, CodePeel acts as a second opinion — reviewing the generated code for bugs, security issues, and bad patterns before you commit.

Tools

Tool	Description
review_code	Review a diff for bugs, security issues, and best practices
fix_code	Generate a fix for a specific code issue
ask_codepeel	Ask questions about code patterns, architecture, etc.
check_credits	Check your account balance and usage

Setup

1. Get your API token

1. Sign in at codepeel.com
2. Go to Settings → API Tokens
3. Click Create Token and copy the token (starts with cpk_)

API tokens don't expire — they work until you revoke them.

2. Configure MCP

Add to your MCP config (.kiro/settings/mcp.json, claude_desktop_config.json, or Cline settings):

{
  "mcpServers": {
    "codepeel": {
      "command": "npx",
      "args": ["-y", "github:codepeel/mcp-server"],
      "env": {
        "CODEPEEL_TOKEN": "cpk_your_token_here"
      }
    }
  }
}

3. Use it

The AI agent will automatically have access to CodePeel's review tools. You can ask it to:

• "Review my recent changes for bugs"
• "Check this diff for security issues"
• "Fix the null pointer issue in auth.ts"
• "How many reviews do I have left?"

Example Usage

Review code changes

Agent: I'll review your changes using CodePeel.
[calls review_code with git diff output]

CodePeel found 3 issues:
🟠 Potential null pointer in user.ts:45
🟡 Missing error handling in api.ts:23
🔵 Unused import in utils.ts:1

Self-review during vibe coding

The AI can review its own output before presenting it to you:

You: Build a login form with validation
Agent: [writes code, then calls review_code on its own output]
Agent: I found a potential XSS issue in my implementation. Let me fix that...
[calls fix_code, applies the fix]
Agent: Here's the login form — I caught and fixed a security issue during generation.

CLI Commands

npx -y github:codepeel/mcp-server init          # Interactive editor setup
npx -y github:codepeel/mcp-server init-config   # Generate .codepeel.yml
npx -y github:codepeel/mcp-server credits       # Check your balance
git diff | npx -y github:codepeel/mcp-server review  # Review from stdin

Environment Variables

Variable	Required	Description
CODEPEEL_TOKEN	Yes	Your API token from Settings (starts with cpk_)
CODEPEEL_API_URL	No	API base URL (default: https://codepeel.com/api)
CODEPEEL_REVIEW_URL	No	Review endpoint URL (default: Firebase function)

Troubleshooting

Error	Fix
"Token expired"	You're using a Firebase ID token instead of an API token. Create a cpk_ token in Settings.
"Invalid token"	Check that your token starts with cpk_ and hasn't been revoked.
"No credits remaining"	Upgrade your plan or wait for credits to reset.

License

MIT