Search and list bills/resolutions with flexible filters. Use this for questions like 'bills recently introduced in the House', 'bills that became law recently' (latestActionContains: 'Became Public Law'), or 'bills that passed the Senate' (latestActionContains: 'Passed Senate'). Results are paginated; increase 'limit' (max 50) for more.

Fetch a single bill's full details. Identify it either by cdgId or by the combination of congress + billType + number. Optionally include related actions, cosponsors, committee activities, titles and text versions.

Find committee activities (e.g. referrals) and the bills they relate to. Use this for questions like 'bills referred to the Commerce Committee recently' (committeeNameContains: 'Commerce', activityNameContains: 'Referred'). Each result includes the related bill summary.

Search the legislative action history across bills. Use this to find events like 'Passed House', 'Passed Senate', 'Became Public Law', or to inspect actions by type/code. Each result includes the related bill.

Search bill cosponsorship records across bills. Useful for finding all the bills a member has cosponsored, or analysing cosponsorship by state/party. To get the cosponsors of a specific bill, prefer get_bill with includeCosponsors: true.

Fetch any object directly by its Relay global id (the opaque id field returned on Bills, Actions, CommitteeActivities, Cosponsors, BillTitles and TextVersions). Returns the concrete type's fields. Use this when you already have a node's global id; to look a bill up by congress/type/number use get_bill instead.

Execute an arbitrary read-only GraphQL query against the legislative API. Use this for complex questions the specialised tools do not cover (e.g. cross-referencing committee activities with bill cosponsors). Read the 'cdg://schema' resource for the full schema. Mutations are rejected.