About Bill Commons

Bill Commons is a free, public, nonpartisan search engine for state legislation across all 50 states and the District of Columbia. It exists because finding out what your state legislature is actually doing — which bills are moving, who sponsored them, how they voted, what changed between drafts — is harder than it should be, and often locked behind inconsistent or paywalled state systems.

The project provides a public website, a free REST API (60 requests/minute, no key required for the anonymous tier), and a Model Context Protocol (MCP) server so AI assistants can search and cite legislation directly and honestly — with real source links, freshness timestamps, and explicit warnings when coverage for a jurisdiction is still thin.