Government
Providers using this tag (344)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 1 Complete, well-documented, and agent-ready
Strong 7 Solid coverage with minor gaps
Developing 54 Usable, with meaningful gaps to close
StotlesOrdnance SurveyStarbridgeDemocracy WorksHM Land RegistryUS Census BureauEU Open Data PortalFederal Aviation AdministrationAccelaUnqorkMethod SecurityLogin.govU.S. Department of TransportationFormAssemblyBargo Congress Trades APIEIAPolyteiaACMAGovlySIMBA ChainNSW Land Registry ServicesRegScaleNHS EnglandID.meAleph AlphaKodexCMS — Centers for Medicare & Medicaid ServicesDepartment of EnergyFERCHUD - US Department of Housing and Urban DevelopmentOpenGovOpendatasoftNationGraphopenFDAUK Civil Aviation AuthorityCongress.gov APIUSGS Water ServicesGOV.UK Payi6eal Open AI Data APIHHS (US Department of Health and Human Services)SEC EDGARVayana NetworkHMRC UK Tax AuthorityAustralian Energy RegulatorLibrary of CongressNOAANOAA — National Oceanic and Atmospheric AdministrationForeign Agricultural ServiceBritish Columbia Data CatalogueCMS Blue Button 2.0Department of Veterans Affairs (VA Lighthouse)GOV.UK NotifyNHS DigitalFiscalNote
Thin 50 Limited public surface area
Ask SageConsumer Financial Protection Bureau (CFPB)ClinicalTrials.govSwiss Food Composition DatabaseNational Institutes of Health (NIH)Aviation Weather CenterNear Space LabsPlanomy Tax DataCybersecurity and Infrastructure Security AgencyWeather.govFREDVirtualiticsLandgateChronicling AmericaRegulations.govOSHAFederal Housing Finance Agency (FHFA)SimSpaceSound TransitAbortion Policy APIConduentCDCCleartaxNASAFederal Laboratory Consortium for Technology TransferCivicPlusYelloFDICUSPTODebtBookAustralian Digital Health AgencyNOAA CO-OPSOpen StatesNational Institute of Standards and Technology (NIST)NOAA ERDDAPRTXeCFRHyporiMark43Federal Mediation and Conciliation ServiceFuelEconomy.govLightning Social VenturesAustralian Energy Market CommissionDepartment of Better TechnologyEvrimDVIDS APIWho Represents This Address (RJH Signal Technologies)Civil Aviation Safety Authority (CASA)AAROpenFEC
Emerging 91 Early or largely undocumented
Cloverleaf AIUSAIDCanada Energy RegulatorAppalachian Regional CommissionFederated WirelessDepartment of LaborTeranetSmall Business Administration (SBA)United States Postal ServiceAnitianPalantirEchodyneHopSkipDriveUSAspending.govOpenFEMALegiScanPayItGovTrackPublic SectorTransport CanadaUrbanLogiqFarm Credit AdministrationChief Financial Officers CouncilEnvisagenowRapidDeployYurtsFederal Accounting Standards Advisory BoardShotSpotter (SoundThinking)NERCSpruceIDProcurement SciencesIntellectibleAccreteBloomberg Government (BGOV)CarbyneNHTSA Crash APIRSAPromiseData.govPlant an AppZeroEyesGeneral DynamicsBotco.aiRates and LimitsIVIXSwiftComplyCivic RoundtableParis Open DataBintiReplicaFVAP.govSecond Front SystemsVulcan TechnologiesKnox SystemsGovWellAltana AIDemandstarHayden AIMirzaUrban SDKBonfire InteractiveGreenliteIndigovMaryland Transit AdministrationDirector of National IntelligenceNannostomusPolimorphicAutogenaiConductor AIWonderschoolGrafferInmarsatPermitFlowPACER Case Locator (PCL)BiobotGoviniPSD CitywideInFactPeace CorpsVoatzOnFrontiersNDBC — National Data Buoy CenterEthos SystemsCountableRocket LabClassWalletNorthrop GrummanGovernment Accountability OfficeBridgeCare FinanceGovGuardGraylark
Minimal 140 Almost no public developer surface
Mechanical OrchardDarwinFederal Labor Relations AuthorityParsonsCentral Intelligence AgencyThe Atlas MarketplacePeregrineTokaRohirrimBrainSESDominion DynamicsKaizen LabsInfillaMerit Systems Protection BoardSpryPointLassen PeakPavilionAutonomous CyberU.S. Immigration and Customs Enforcement (ICE)GetInsuredForward PlatformCognitive SpaceSynapticL3Harris TechnologiesAeon IndustrialCouncil on Environmental QualitySocrataBank Negara Malaysia Open DataBrazil Central Bank Open DataCity, BerlinCity, Nantes Open DataData.parliament.ukLocalGov.jpOpen Government, ACTOpen Government, NetherlandsOpen Government, New South WalesOpen Government, SwitzerlandOpen Government, UKRebellion DefenseArena IntelligenceCity, Toronto Open DataGazette Data, UKOpen Government, Czech RepublicOpen Government, GreeceOpen Government, ItalyRepresent by Open NorthUK Companies HouseCPFHubFed10AssetWorksValinorBCLawsBrazilBrazilian Chamber of Deputies Open DataCensus.govCity, GdańskCity, GdyniaCity, HelsinkiCity, LvivCity, New York Open DataColorado Information MarketplaceData USAFECInterpol Red NoticesIstanbul (İBB) Open DataOpen Government, AustraliaOpen Government, AustriaOpen Government, BelgiumOpen Government, ColombiaOpen Government, CyprusOpen Government, FinlandOpen Government, FranceOpen Government, GermanyOpen Government, IndiaOpen Government, KoreaOpen Government, LithuaniaOpen Government, LuxembourgOpen Government, MexicoOpen Government, MexicoOpen Government, PeruOpen Government, Queensland GovernmentOpen Government, SloveniaOpen Government, South Australian GovernmentOpen Government, SpainOpen Government, SwedenOpen Government, TaiwanOpen Government, ThailandOpen Government, USAOpen Government, Victoria State GovernmentOpen Government, West AustraliaOpen Government, IrelandRaytheonFBI WantedFederal Committee on Statistical MethodologyGun PolicyIndian PincodeINEIOpen Government, ArgentinaOpen Government, DenmarkOpen Government, NorwayOpen Government, Saudi ArabiaDeutscher Bundestag DIPDistrict of Columbia Open DataEpirusFederal RegisterFood Standards AgencyL-3 CommunicationsOak Ridge National LaboratoryCH2M HillPercipient.aiSmacktechnologiesGetCalFreshBBN TechnologiesSeneca SystemsBrazil Receita WSCity, Prague Open DataCode.govOpen Government, EstoniaOpen Government, New ZealandOpen Government, PolandOpen Government, PortugalOpen Government, RomaniaOpen Government, SingaporeOpen Government, SlovakiaPRC Exam ScheduleUS Presidential Election Data by TogaTechUSA.govBarcelona Open DataCyemptivePassportsJob CorpsGovlistOccupational Safety and Health AdministrationOffice of Inspector GeneralOleaAirQtelIZOIC’sAboundExelis
Unrated 1 Not yet scored
APIs with this tag (137)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Exemplar 1 Complete, well-documented, and agent-ready
Strong 10 Solid coverage with minor gaps
CTX — Center for Computational Toxicology and Exposure APIsChemical, hazard, bioactivity, and exposure data covering tens of thousands of chemicals. Includes Chemical...EPA ATTAINS Web ServicesAssessment, Total Maximum Daily Load Tracking and Implementation System — REST/JSON services for state wate...EPA e-Manifest Hazardous Waste TrackingElectronic hazardous waste manifest tracking system with REST APIs for manifest creation, retrieval, search...EPA Facility Registry Service (FRS) APIMaster inventory of EPA-regulated facilities cross-walked across air, water, waste, and drinking-water prog...EPA Grants APIInternal-with-key access to NGGS grant programs — applications, obligations, place of performance, and fund...EPA Insect Repellents APISearchable inventory of EPA-registered insect repellent products with active ingredient, target pest, and d...EPA System of Registries (SoR)Authoritative registries of substances, regulatory programs, terminology, and crosswalks used across EPA sy...EPA TRI (Toxics Release Inventory) Web ServiceToxic chemical release and transfer reporting (Form R / Form A) covering ~770 listed chemicals at TRI-cover...EPA WATERS — Watershed Assessment, Tracking & Environmental ResultsGeospatial water program services including StreamCat, NHDPlus, and ATTAINS overlays.Code de la route v2Booking API for "Passer mon code avec La Poste" - the official La Poste driving-theory examination service....
Developing 13 Usable, with meaningful gaps to close
CivicData Open Data API (CKAN) — END OF LIFECivicData.com is Accela's free open-data platform for government agencies, described on its own site as "a ...DOT Open Data PortalThe U.S. Department of Transportation Open Data Portal provides access to transportation datasets published...Visa Government Insights HubThe Visa Government Insights Hub is a platform that provides government agencies with valuable information ...CAA Consultations APIThe Citizen Space (Delib) public consultation API deployed on the CAA's consultations domain. Two documente...HMRC Corporation Tax APIThe HMRC Corporation Tax APIs enable accounting software to submit corporation tax returns, retrieve liabil...HMRC Customs Declarations APIThe HMRC Customs Declarations APIs enable customs software to submit import and export declarations, manage...HMRC PAYE (Pay As You Earn) APIThe HMRC PAYE APIs enable payroll software to submit employer payroll data, retrieve tax codes and employee...HMRC Self Assessment APIThe HMRC Self Assessment APIs enable software to submit and manage self assessment tax returns, income sour...Decision Reviews APIComposite of the three AMA decision-review filing endpoints — Higher-Level Review (HLR), Supplemental Claim...Education Benefits APISchool Certifying Officials (SCOs) and education benefit administrators read and submit GI Bill / Post-9/11...Guaranty Remittance APILets VA Loan Guaranty servicers remit funding-fee, late, and other Loan Guaranty payments to VA electronica...Health Care Costs Coverage APIInsurance-coordination API for VA's Consolidated Patient Account Center (CPAC) — submit and update third-pa...Loan Guaranty APIProvides lenders and servicers the digital surface for the VA Home Loan Guaranty program — eligibility, app...
Thin 12 Limited public surface area
Bird City Data PortalCredentialed city / municipal data portal at https://city-data.bird.co providing partner cities with access...BPA GIS Data Hub APIThe BPA GIS Data Hub provides publicly available geospatial data from Bonneville Power Administration. The ...BPA Wind and Solar Generation DataBPA publishes real-time and historical wind and solar generation data for the Balancing Authority area. Dat...USPTO Patent Assignment Search APIThe USPTO Patent Assignment Search API retrieves patent assignment information including ownership transfer...UAEU Open Data on the UAE Federal Open Data Portal (CKAN)UAEU publishes open datasets as an organization account on the UAE federal open data portal operated by the...Lumen Public Sector API CenterThe Public Sector API Center offers government-tailored REST APIs for Lumen network services, enabling fede...SAM.gov Contract Awards APIThe Contract Awards API provides access to federal contract award information from SAM.gov, including award...SAM.gov Entity Management APIThe Entity Management API provides detailed entity (vendor/contractor) information from SAM.gov including r...SAM.gov Federal Hierarchy Public APIThe Federal Hierarchy Public API allows non-federal users to retrieve Federal Organization details down to ...SAM.gov Get Opportunities Public APIThe Get Opportunities Public API provides all published contract opportunity details based on request param...SAM.gov Opportunity Management APIThe Opportunity Management API allows authorized users to programmatically submit, update, and manage contr...AAR Government ServicesAAR's government services division provides comprehensive maintenance and supply chain programs, shelters a...
Emerging 17 Early or largely undocumented
Cloverleaf AI MCP ServerA remote, OAuth-protected Model Context Protocol server that exposes Cloverleaf AI's government meeting int...USPS Domestic Labels APICreates domestic shipping labels with barcodes in multiple formats and generates Shipping Services Files. R...USPS International Labels APICreates international shipping labels and generates required Shipping Services Files for customs compliance.USPS International Prices APIProvides pricing for international USPS products based on shipment characteristics including destination co...USPS Locations APIIdentifies drop-off facilities and destination entry points for various USPS services. Supports post office...USPS OAuth APIIndustry-standard OAuth 2.0 Client Credentials authentication protecting access to all USPS APIs. Returns B...USPS SCAN Forms APILinks multiple domestic and international labels through a single electronic file number, creating Shipment...USPS Service Standards APIProvides delivery benchmarks showing expected transit times between origin and destination ZIP Codes for US...USPS Shipping Options APIReturns a comprehensive list of pricing, service standards, and shipping options for USPS products in a sin...USAspending.govUS federal spending dataUrbanLogiq Platform APIThe signed-request platform API behind the UrbanLogiq community intelligence platform — data catalog object...Army National Guard FOIA PortalThe Freedom of Information Act (FOIA) portal for the Army National Guard and National Guard Bureau provides...Rates and Limits JSON APIKeyless, unauthenticated REST-style JSON API serving US tax, payroll, benefits, and wage figures with bundl...HRSA Health Center Data ServiceThe HRSA Health Center Data Service enables users to query for health centers by state, county, or ZIP Code...HRSA Ryan White HIV/AIDS Medical Care Provider Data ServiceThe HRSA Ryan White HIV/AIDS Medical Care Provider Data Service enables users to query for HIV/AIDS care pr...Open Government, CanadaCanadian Government Open DataPeace Corps Data APIAPI for accessing Peace Corps volunteer statistics, country programs, and development data.
Minimal 84 Almost no public developer surface
Parsons Corporation APIThe Parsons Corporation API provides access to platform services and data for enterprise integration and au...Bank Negara Malaysia Open DataMalaysia Central Bank Open DataBrazil Central Bank Open DataBrazil Central Bank Open DataCity, BerlinBerlin(DE) City Open DataCity, Nantes Open DataNantes(FR) City Open DataData.parliament.ukContains live datasets including information about petitions, bills, MP votes, attendance and moreLocalGov.jpJapan grants and subsidies (central J-Grants + 1,916 municipalities)Open Government, ACTAustralian Capital Territory Open DataOpen Government, NetherlandsNetherlands Government Open DataOpen Government, New South WalesNew South Wales Government Open DataOpen Government, SwitzerlandSwitzerland Government Open DataOpen Government, UKUK Government Open DataCity, Toronto Open DataToronto (CA) City Open DataGazette Data, UKUK official public record APIOpen Government, Czech RepublicCzech Republic Government Open DataOpen Government, GreeceGreece Government Open DataOpen Government, ItalyItaly Government Open DataRepresent by Open NorthFind Canadian Government RepresentativesUK Companies HouseUK Companies House Data from the UK governmentCPFHubBrazilian CPF lookup — returns full name, birth date, and gender for any CPFBCLawsAccess to the laws of British ColumbiaBrazilCommunity driven API for Brazil Public DataBrazilian Chamber of Deputies Open DataProvides legislative information in Apis XML and JSON, as well as files in various formatsCensus.govThe US Census Bureau provides various APIs and data sets on demographics and businessesCity, GdyniaGdynia (PL) City Open DataCity, HelsinkiHelsinki(FI) City Open DataCity, LvivLviv(UA) City Open DataCity, New York Open DataNew York (US) City Open DataColorado Information MarketplaceColorado State Government Open DataData USAUS Public DataFECInformation on campaign donations in federal electionsInterpol Red NoticesAccess and search Interpol Red NoticesIstanbul (İBB) Open DataData sets from the İstanbul Metropolitan Municipality (İBB)Open Government, AustraliaAustralian Government Open DataOpen Government, AustriaAustria Government Open DataOpen Government, BelgiumBelgium Government Open DataOpen Government, ColombiaColombia Government Open DataOpen Government, CyprusCyprus Government Open DataOpen Government, FinlandFinland Government Open DataOpen Government, FranceFrench Government Open DataOpen Government, GermanyGermany Government Open DataOpen Government, IndiaIndian Government Open DataOpen Government, KoreaKorea Government Open DataOpen Government, LithuaniaLithuania Government Open DataOpen Government, LuxembourgLuxembourgish Government Open DataOpen Government, MexicoMexican Statistical Government Open DataOpen Government, MexicoMexico Government Open DataOpen Government, PeruPeru Government Open DataOpen Government, Queensland GovernmentQueensland Government Open DataOpen Government, SloveniaSlovenia Government Open DataOpen Government, South Australian GovernmentSouth Australian Government Open DataOpen Government, SpainSpain Government Open DataOpen Government, SwedenSweden Government Open DataOpen Government, TaiwanTaiwan Government Open DataOpen Government, ThailandThailand Government Open DataOpen Government, USAUnited States Government Open DataOpen Government, Victoria State GovernmentVictoria State Government Open DataOpen Government, West AustraliaWest Australia Open DataOpen Government, IrelandIreland Government Open DataFBI WantedAccess information on the FBI Wanted programGun PolicyInternational firearm injury prevention and policyIndian PincodeFree India PIN code lookup with GPS coordinates, 165k+ post offices, state & district dataINEIPeruvian Statistical Government Open DataOpen Government, ArgentinaArgentina Government Open DataOpen Government, DenmarkDenmark Government Open DataOpen Government, NorwayNorwegian Government Open DataOpen Government, Saudi ArabiaSaudi Arabia Government Open DataDeutscher Bundestag DIPThis API provides read access to DIP entities (e.g. activities, persons, printed material)District of Columbia Open DataContains D.C. government public datasets, including crime, GIS, financial data, and so onFederal RegisterThe Daily Journal of the United States GovernmentFood Standards AgencyUK food hygiene rating data APIBrazil Receita WSConsult companies by CNPJ for Brazilian companiesCity, Prague Open DataPrague(CZ) City Open DataCode.govThe primary platform for Open Source and code sharing for the U.S. Federal GovernmentOpen Government, EstoniaEstonia Government Open DataOpen Government, New ZealandNew Zealand Government Open DataOpen Government, PolandPoland Government Open DataOpen Government, PortugalPortugal Government Open DataOpen Government, RomaniaRomania Government Open DataOpen Government, SingaporeSingapore Government Open DataOpen Government, SlovakiaSlovakia Government Open DataPRC Exam ScheduleUnofficial Philippine Professional Regulation Commission's examination scheduleUS Presidential Election Data by TogaTechBasic candidate data and live electoral vote counts for top two parties in US presidential electionUSA.govAuthoritative information on U.S. programs, events, services and more
Companies reaching this through an API (10)
These companies publish an API, specification or operation carrying “Government” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Army National Guard
Bird
Bonneville Power Administration
CenturyLink (Lumen Technologies)
Google
Health Resources and Services Administration
Open Government Canada
SAM.gov
United Arab Emirates University
Visa
Score breakdown
Frequency
73.0
log-scaled weighted occurrences
Breadth
8.9
spread across providers
Quality lift
25.2
mean composite of providers using it
Cohesion
7.0
strength of nearest seed neighbor
Related tags
Public Sector 38 co-occurrences
GovTech 36 co-occurrences
Open Data 73 co-occurrences
Public APIs 87 co-occurrences
Defense 36 co-occurrences
Federal Government 25 co-occurrences
Public Safety 14 co-occurrences
Datasets 20 co-occurrences
Where this tag comes from
Provider tag344
Api tag138
Cohort brief
Auto-generatedThe 337 providers in the APIs.io catalog tagged Government, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
337
all scored
Mean Kin Score
20.8
-2.1 vs catalog 22.9
Mean Agent Readiness
11.1
-0.8 vs catalog 11.9
Spread
0–69.4
median 16.6 · σ 16.1
How the 337 split by band
Exemplar 1Strong 7Developing 54Thin 50Emerging 91Minimal 134
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Governance | 6.7 | 6.3 | +0.4 | 337 |
| Discoverability | 57.3 | 58.1 | -0.8 | 337 |
| Contract Quality | 16.5 | 17.6 | -1.1 | 337 |
| Operational Transparency | 11.6 | 13.7 | -2.1 | 337 |
| Developer Ergonomics | 20.6 | 23.2 | -2.6 | 337 |
| Access Clarity | 20.5 | 26.5 | -6 | 337 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 8% | 14% | -6 |
| MCP server (first-party) | 7% | 12% | -5 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 8% | 11% | -3 |
| Security | 99% | 98% | +1 |
| Arazzo workflows | 2% | 2% | 0 |
| Governance rules | 13% | 14% | -1 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 TaskHawk Systems 69.4
- 2 Seekr 63
- 3 EPA — U.S. Environmental Protection Agency 60.7
- 4 La Poste Groupe 60.5
- 5 Affinda 60.4
- 6 General Services Administration 58
- 7 Consumer Data Right (Energy) 56.5
- 8 California Privacy Protection Agency 54.9
- 9 Stotles 54.1
- 10 Ordnance Survey 53.9
Top by Agent Readiness
- 1 OpenGov 63.1
- 2 Starbridge 62.9
- 3 Stotles 57.7
- 4 Affinda 54.2
- 5 FormAssembly 50.4
- 6 Govly 49.7
- 7 TaskHawk Systems 48.8
- 8 NationGraph 44.4
- 9 GOV.UK Pay 42.7
- 10 Bargo Congress Trades API 42.3
All 344 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
5 October 2026, across 29093
providers, using the same computation served by the
APIs.io cohort API. Briefs are published for rosters of
5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.