latex-mcp

An open-source Model Context Protocol server that lets LLMs (Claude, Codex, Gemini/Antigravity, and other MCP-compatible clients) compile LaTeX documents and inspect the resulting PDF — enabling a fully autonomous write → compile → check → revise loop.

It talks to a self-hosted instance of Overleaf's open-source CLSI (Common LaTeX Service Interface) over HTTP, and also exposes a small web UI (in the spirit of Overleaf's editor) so a human can watch or collaborate on the same document a connected LLM is editing.

Status: early scaffolding, under active development.

Architecture

[LLM client (Claude / Codex / Antigravity / ...)]      [Browser UI]
                  |  MCP (stdio)                          |  HTTP + WebSocket
                  v                                       v
                         [latex-mcp backend service]
                                    |
                                    | HTTP REST
                                    v
                         [Self-hosted CLSI] (Docker)
                                    |
                                    v
                         [TeX Live container] (actual compilation)

Setup

Full setup instructions (CLSI via Docker, running the backend, and connecting from Claude Desktop, Claude Code, Codex CLI, Antigravity, and others) are coming as the project is built out.

License

MIT — see LICENSE. Note this project is independent and not affiliated with Overleaf; it only communicates with the open-source CLSI component over its HTTP API.