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Spec-to-code mapping: core library, MCP server, and CLI

Project description

Specmap

Map AI-generated code changes back to spec intent.

Specmap generates LLM-powered annotations that link code changes to specification documents. When an AI agent writes code, reviewers can see which spec requirements each code region implements, with inline [N] citations pointing to the exact spec sections.

How It Works

  1. MCP server integrates with your coding agent (e.g., Claude Code) to annotate code changes with spec references as you work
  2. CLI validates annotations in CI (specmap validate)
  3. Web UI lets reviewers browse PRs with spec annotations overlaid on diffs
Coding Agent ──MCP──► Specmap Server ──LLM──► .specmap/{branch}.json
                          │                          │
                     reads specs                committed to git
                     reads diffs                     │
                                                     ▼
                                              specmap validate (CI)
                                              specmap serve (Web UI)

Use Specmap on Your Projects

No need to clone this repo. Install as a tool and use it in any project:

# Install
uv tool install git+https://github.com/jdraines/specmap.git

# Verify
specmap --version

Add the MCP server to your coding agent (.mcp.json in your project):

{
  "mcpServers": {
    "specmap": {
      "command": "specmap-mcp",
      "env": {
        "SPECMAP_API_KEY": "sk-..."
      }
    }
  }
}

See the full documentation for configuration, CLI commands, and CI integration.

Develop Specmap

Clone and run locally:

git clone https://github.com/jdraines/specmap.git
cd specmap

# Install dependencies
just mcp-install     # Python (core library, MCP server, CLI, API server)
just web-install     # Node (React frontend)

# Run full dev stack (API + Vite dev server)
just dev

# Run tests
just test-all        # Unit + functional tests
just lint            # ruff + tsc

# Build wheel with bundled frontend
just build

To run the web UI locally, you'll need a forge token (PAT or OAuth). See Development for the complete setup.

Prerequisites

Tool Install
Python 3.11+ System package manager
uv curl -LsSf https://astral.sh/uv/install.sh | sh
Node.js 20+ System package manager
just cargo install just or system packages
git System package manager

Project Structure

specmap/
├── core/          Python: core library, MCP server, CLI, API server
├── web/           React frontend (Vite + Tailwind)
├── tests/         Functional test suite
├── docs/          MkDocs documentation
└── justfile       Task runner (run `just` to see all commands)

License

See LICENSE.

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