Codecov MCP Server

A Codecov Model Context Protocol server in TypeScript.

Tools for finding where your codebase is lacking tests.
Prompts for suggesting which tests to write.

Features

Resources

None yet

Tools

get_commit_coverage_totals - Returns the coverage totals for a given commit and the coverage totals broken down by file. Uses this api.

Prompts

suggest_tests - Suggests tests to write based on Codecov report.

Installation

Usage: Ask your AI agent to "run the get_commit_coverage_totals tool" in your chat.

Configure: No need to install anything, just run with npx and put in your Codecov API key from here - Go to Settings -> Access.

And git url: git remote get-url origin

Cursor command: npx -y codecov-mcp-server --api-key XXX --git-url XXX (On Windows) Cursor command: cmd.exe /c npx -y codecov-mcp-server --api-key XXX --git-url XXX

To use with Claude (or any AI), add the server config:

{
  "mcpServers": {
    "codecov-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "codecov-mcp-server",
      ],
      "env": {
        "CODECOV_API_KEY": "XXX",
        "GIT_URL": "XXX"
      }
    }
  }
}

Debugging

Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the MCP Inspector, which is available as a package script:

npm run inspector

The Inspector will provide a URL to access debugging tools in your browser.

Development

Install dependencies:

npm install

Build the server:

npm run build

For development with auto-rebuild:

npm run watch