Unwritten gives coding agents your team's unwritten rules. It mines git history to learn which files change together, then flags confident absences with evidence: "you changed A but not B — they co-change in 59 of 63 commits." No LLM, no config. IntelliSense for conventions: an MCP server for agents, plus a CLI for pre-commit hooks.

See which files secretly change together before your refactor breaks them. Local git-history heatmaps, force graphs, and JSON.