# Public Sector **Canonical:** https://apis.io/providers/public-sector/ **APIs profiled:** 21 Industry-vertical index for the public-sector / government API landscape across U.S. federal, state, and local levels. Catalogs the federal API gateway api.data.gov (operated by GSA's Technology Transformation Services under the Open Government Data Act of 2018, used by 25 agencies for over 450 APIs), the catalog.data.gov CKAN metadata catalog, headline federal programmatic surfaces (Regulations.gov, Federal Register, GovInfo, SAM.gov, USAspending.gov, Treasury Fiscal Data, Congress.gov, FEC openFEC, api.weather.gov, api.nasa.gov, Census Data API, Bureau of Economic Analysis), state and local infrastructure (Socrata / Tyler Data and Insights, Tyler Technologies courts/ERP/public-safety stack, OpenGov ERP/budgeting/permitting cloud), and the civic-tech layer (OpenStates / Plural Policy, GovTrack, Open Civic Data). Cross-references Kin Lane's 2026-05-05 roundup of 211 U.S. federal agencies and their APIs on apievangelist.com. The catalog focuses on the data-schema shape of a government dataset / agency / regulation record so that civic-tech and enterprise consumers can normalize across federal, state, and local publishers. ## Kin Score — 11.3 / 100 (emerging) Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 11.3). | Facet | Score | |---|---| | Discoverability | 64.8 | | Contract Quality | 15.5 | | Governance | 9.8 | | Contract Governance | 9.8 | | Operational Transparency | 0.0 | | Developer Ergonomics | 0.0 | | Commercial Clarity | 0.0 | | Access Clarity | 0.0 | Regulatory layer — **Government & Public Sector**: 20.4 (matched via tags). ## Agent readiness — 0.0 (human-only) | Dimension | Value | |---|---| | Spec Presence | no | | Agentic Access | no | | Reversibility Documented | no | | MCP Server | no | | Auth Clarity | no | | Idempotency | no | | Error Semantics | no | | OpenAPI Examples | no | | Rate Limit Signal | no | | Event Surface Described | no | | Agent Skills | no | | Well Known Catalog | no | | Consent Identity | no | | Agent Card | no | | Dry Run Mode | no | ## Access Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low). ## APIs (21) - **api.data.gov** — Free API management gateway operated by the U.S. General Services Administration's Technology Transformation Services. Fronts the API keys, rate limiting, and analytics for over... - **data.gov (CKAN catalog)** — The U.S. federal open data catalog at catalog.data.gov, powered by the open-source CKAN platform. The CKAN Action API at https://catalog.data.gov/api/3/action/ exposes dataset m... - **Regulations.gov API** — The Regulations.gov v4 REST API exposes federal regulatory dockets, documents (Proposed Rules, Rules, Supporting & Related Material, Other), and public comments. Read endpoints ... - **Federal Register API** — JSON REST API for the daily Federal Register published by the Office of the Federal Register and GPO. Exposes documents (Notice, Proposed Rule, Rule, Presidential Document), age... - **GovInfo API** — U.S. Government Publishing Office (GPO) GovInfo developer hub. The Collections API at api.govinfo.gov delivers self-describing packages of authoritative federal content — Congre... - **SAM.gov APIs** — System for Award Management (SAM.gov), the U.S. federal procurement and financial assistance system, exposes 11 production APIs catalogued at open.gsa.gov including Entity Manag... - **USAspending.gov API** — The USAspending API, maintained by the U.S. Department of the Treasury, provides public access to comprehensive U.S. government spending data including federal contracts, grants... - **Treasury Fiscal Data API** — Bureau of the Fiscal Service API at api.fiscaldata.treasury.gov exposing Treasury's authoritative fiscal datasets — Debt to the Penny, Monthly Treasury Statement, Daily Treasury... - **Congress.gov API** — The api.congress.gov REST API, maintained by the Library of Congress, exposes structured legislative data — bills, amendments, summaries, members, committees, committee reports,... - **FEC openFEC API** — Federal Election Commission's openFEC REST API at api.open.fec.gov exposes campaign finance data — candidates, committees (PACs, parties, campaigns), filings, contributions, dis... - **api.weather.gov (NOAA NWS)** — National Weather Service REST + JSON-LD API at api.weather.gov delivering open weather forecasts, alerts, and observations. Endpoints include /points/{lat,lon}, /gridpoints/{off... - **api.nasa.gov** — Aggregated NASA Open APIs hub at api.nasa.gov. Includes Astronomy Picture of the Day (APOD), Asteroids NeoWs, DONKI (Space Weather), Earth Imagery, EONET (Earth Observatory Natu... - **Census Data API** — U.S. Census Bureau Data API at api.census.gov serving approximately 1,784 datasets across major survey programs — Decennial Census, American Community Survey (ACS 1-year and 5-y... - **Bureau of Economic Analysis (BEA) API** — BEA Data API exposing GDP, national income, personal income, corporate profits, international trade and investment, regional accounts, and industry accounts. JSON and XML respon... - **OpenStates API (Plural Policy)** — OpenStates v3 REST API at v3.openstates.org, operated by Plural Policy, providing JSON access to U.S. state legislative information — bills, people (legislators and governors), ... - **GovTrack** — GovTrack.us civic-tech site tracking U.S. Congress — bills, votes, members, committees, congressional districts. Originally one of the first civic-tech APIs; today its bulk data... - **Open Civic Data** — Open Civic Data is a community-maintained set of specifications and shared identifiers for civic information — Open Civic Data Division Identifiers (OCD-IDs) for political geogr... - **Socrata Open Data API (Tyler Data and Insights)** — Socrata Open Data API (SODA) is the read/write JSON API powering open data portals at federal, state, county, and city governments worldwide. Queries use SoQL (Socrata Query Lan... - **Tyler Technologies** — Largest U.S. vendor of mission-critical software to state and local government. Product portfolio spans Courts & Justice (case management, e-filing, jury management, prosecution... - **OpenGov** — OpenGov sells a cloud ERP, budgeting, financial-reporting, permitting, licensing, and procurement suite to U.S. state and local governments. Originally a Sunlight Foundation spi... - **API Evangelist Federal Agencies Roundup** — Kin Lane's 2026-05-05 roundup at apievangelist.com indexes 211 U.S. federal agencies and their public-facing APIs, RSS feeds, open-data surfaces, and referenced internal systems... ## Security (1) - **Public Sector Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC ## Tags Public Sector, Government, Federal, States, Local, Civic Tech, Open Data, Regulations, Procurement, Open Government, Topic --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/public-sector/). Scores are computed from the provider's own public artifacts under a published rubric.