ContribOS is a self-hostable, open-source platform that bridges OSS maintainers and contributors using AI agents. How it works: → Discover issues matched to your skills by AI scoring → Agent clones the repo, calls your chosen LLM (8 providers supported), generates a unified diff → Review gate keeps humans in the loop → Approved fixes become GitHub PRs with AI disclosure built in Supports BYOK, Google's A2A protocol, and Contribution Health Score reputation tracking. MIT licensed. Free forever.