@pr-impact/mcp-server

Model Context Protocol server that exposes pr-impact analysis tools to AI assistants like Claude Code, Cursor, and other MCP-compatible clients.

Install

npm install -g @pr-impact/mcp-server

Setup

Claude Code

Add to .claude/mcp.json:

{
  "mcpServers": {
    "pr-impact": {
      "command": "npx",
      "args": ["-y", "@pr-impact/mcp-server"]
    }
  }
}

Claude Desktop

Add to your Claude Desktop config:

{
  "mcpServers": {
    "pr-impact": {
      "command": "npx",
      "args": ["-y", "@pr-impact/mcp-server"]
    }
  }
}

Cursor / VS Code

Follow the editor's MCP server configuration to add:

command: npx
args: -y @pr-impact/mcp-server

Available Tools

| Tool | Description | |---|---| | analyze_diff | Full PR analysis -- breaking changes, test coverage, doc staleness, impact graph, and risk score | | get_breaking_changes | Detect breaking API changes with optional severity filtering | | get_risk_score | Calculate risk score with full factor breakdown | | get_impact_graph | Build import-dependency graph showing directly changed and indirectly affected files |

Parameters

All tools accept these optional parameters:

| Parameter | Type | Description | |---|---|---| | repoPath | string | Path to git repo (defaults to cwd) | | baseBranch | string | Base branch (defaults to main/master) | | headBranch | string | Head branch (defaults to HEAD) |

Additional tool-specific parameters:

• get_breaking_changes: minSeverity ("low" | "medium" | "high") -- filter by minimum severity
• get_impact_graph: filePath (string) -- focus on a specific file; depth (number) -- max graph traversal depth

Transport

Uses stdio transport. The server reads from stdin and writes to stdout, which is the standard transport for local MCP servers.

Requirements

• Node.js >= 20
• Must be run inside (or pointed at) a git repository

License

MIT