Groundrule

Groundrule is an open-source standards layer for AI coding that turns engineering standards into executable rules for every developer, repository, and AI coding agent. Standards are written once as small YAML files in git and enforced locally, in CI, and through a hosted MCP server. It checks code against your standards using deterministic checks and Semgrep, syncs instructions to AI coding agents (Claude, Cursor, Copilot), and surfaces findings across pull requests in a central workspace.