HillGraph is a public-data platform that helps users explore the people, organizations, and disclosures connected to U.S. policymaking. Its searchable congressional staffing, travel, and Foreign Agents Registration Act (FARA) records are cross-indexed with relationship context and data provenance, making it easier to investigate how policy and influence intersect.

The platform provides directories of congressional staffers and offices, including roles and policy focus areas, alongside information on bills, executive orders, committees, and legislative activity. Users can follow issue-specific policy tracking dashboards for topics such as artificial intelligence, cryptocurrency, cybersecurity, nuclear policy, and quantum technology, and review how public bills advance through Congress. HillGraph also organizes sponsored travel disclosures by destination, funder, and trip, and offers access to FARA filings. Its data includes salary records and office details, with counts and recent activity that help users understand the scope of its coverage. Designed for researchers, journalists, and anyone following Congress, HillGraph brings public records together in one place and invites users to report inaccuracies.