established · 3.6 market

United Kingdom

Score 28.6 / 100 318 providers 68 APIs Search apis.io →

Variants seen in the corpus: United Kingdomunited-kingdom

Providers using this tag (318)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Strong 19 Solid coverage with minor gaps

XoserveEnergyGasUtilities4 APIs65.4 UK Power NetworksEnergyUtilitiesElectricity2 APIs64.2 Electricity North WestEnergyUtilitiesElectricity2 APIs63.3 EDF EnergyEnergyUtilitiesElectricity3 APIs62.9 Ordnance SurveyReal-EstateLand RegistryGeospatial12 APIs62.6 GoodlordReal-EstatePropTechProperty Management3 APIs61.7 MoneyhubPaymentsOpen BankingOpen Finance2 APIs61.2 Northern PowergridEnergyUtilitiesElectricity3 APIs60.7 Super PaymentsCompanyPaymentsOpen BankingCash Rewards8 APIs60.4 GSMATelecommunicationsStandardsTrade Association18 APIs59.8 PaymentsensePaymentsPayment GatewayPayment Processing3 APIs59.1 HM Land RegistryReal-EstateLand RegistryOpen Data14 APIs58.5 University of WarwickUniversityHigher EducationEducationResearch8 APIs58.3 HildebrandEnergyUtilitiesElectricity5 APIs57.6 Smart PensionPensionsRetirementworkplace-pensionauto-enrolment149 APIs56.5 first directFinancial-ServicesBankingOpen BankingPSD24 APIs56.2 AlgbraFinancial-ServicesBankingOpen BankingPSD24 APIs55.8 Street.co.ukReal-EstatePropTechCRM3 APIs55.4 ReapitReal-EstatePropTechCRM7 APIs55.0

Developing 83 Usable, with meaningful gaps to close

Thin 63 Limited public surface area

Monument BankFinancial-ServicesBankingOpen BankingPSD24 APIs39.2 University of BristolEducationHigher EducationUniversityResearch4 APIs38.7 Tandem BankFinancial-ServicesBankingOpen BankingPSD23 APIs38.6 Cynergy BankFinancial-ServicesBankingOpen BankingPSD23 APIs38.5 Recognise BankFinancial-ServicesBankingOpen BankingPSD24 APIs38.2 ZooplaReal-EstateProperty ListingsProperty Portal3 APIs37.9 Liberty GlobalTelecommunicationsBroadbandFixed Broadband3 APIs37.8 University of SussexEducationHigher EducationUniversityResearch11 APIs37.8 Cardiff UniversityEducationHigher EducationUniversity16 APIs37.4 Muse FinanceCompanyEmbedded FinanceInvoice FinanceTrade Finance1 API37.3 PurplebricksReal-EstateProperty ListingsOnline Estate Agency13 APIs36.9 char.gyEnergyEV ChargingElectricity2 APIs36.6 University of BathEducationHigher EducationUniversity26 APIs36.5 Skipton Building SocietyFinancial-ServicesBankingBuilding SocietyOpen Banking4 APIs36.4 RICS (Royal Institution of Chartered Surveyors)Real-EstateIndustry BodyValuation1 API36.0 Shawbrook BankFinancial-ServicesBankingSavingsSpecialist Lending4 APIs35.8 GB BankFinancial-ServicesBankingOpen BankingPSD24 APIs35.7 Handelsbanken UKBankingOpen BankingFinancial-ServicesPSD27 APIs35.7 OrdoPaymentsOpen BankingAccount-to-Account6 APIs35.7 Thought MachineCompanyBankingCore BankingFinancial-Services2 APIs35.5 King's College LondonUniversityHigher EducationEducationRussell Group6 APIs35.2 takepaymentsPaymentsPayment GatewayPayment Processing1 API35.1 Paragon BankFinancial-ServicesBankingSavingsMortgages4 APIs34.8 OpenPrescribingHealthcareNHSPrescribing4 APIs34.7 CuvvaCompanyInsuranceInsurtechCar Insurance1 API34.6 FnaticCompanyEsportsGamingEntertainment2 APIs34.5 Imperial College LondonUniversityHigher EducationEducationRussell Group5 APIs34.4 ECOMMPAYPaymentsPayment GatewayPayment Processing4 APIs34.3 Bank of ScotlandFinancial-ServicesBankingOpen BankingPSD24 APIs34.1 London School of Economics and Political ScienceUniversityHigher EducationEducation7 APIs33.5 Principality Building SocietyFinancial-ServicesBankingBuilding SocietySavings4 APIs33.2 HiscoxInsuranceProperty and CasualtySpecialty Insurance4 APIs33.0 Lightning Social VenturesCompanyFinancial InclusionGrantsSocial Impact3 APIs33.0 INSTANDAInsuranceInsurtechPolicy Administration32.8 TwentyCiReal-EstatePropTechProperty Data9 APIs32.6 Queen's University BelfastEducationHigher EducationUniversityResearch38 APIs32.5 Artificial LabsInsuranceInsurtechUnderwriting32.4 Lancaster UniversityEducationHigher EducationUniversity3 APIs32.3 Lloyd's of LondonInsuranceReinsuranceSpecialty Insurance4 APIs32.3 University of St AndrewsEducationHigher EducationUniversityResearch5 APIs32.0 Apex27Real-EstatePropTechProperty Listings2 APIs31.9 Financial Conduct AuthorityInsuranceRegulatorMarket Infrastructure2 APIs31.8 BupaInsuranceHealth InsuranceLife and Health2 APIs31.7 OfgemEnergyUtilitiesElectricity31.7 National Grid Electricity DistributionEnergyUtilitiesElectricity2 APIs31.1 National Energy System Operator (NESO)EnergyElectricityEnergy Markets2 APIs30.8 University of BirminghamEducationHigher EducationUniversity4 APIs30.8 Newcastle UniversityEducationHigher EducationUniversity8 APIs30.7 Kraken TechnologiesEnergyUtilitiesElectricity2 APIs29.8 DHLFreightLogisticsShippingE-Commerce51 APIs29.5 RightmoveReal-EstateProperty ListingsProperty Portal2 APIs29.4 University of YorkEducationHigher EducationUniversity2 APIs29.2 Good EnergyEnergyUtilitiesElectricity1 API29.1 Knight FrankReal-EstateProperty ListingsCommercial Real Estate1 API29.1 OmazeCompanyCharityFundraisingNon-Profit3 APIs29.0 CytoraInsuranceInsurtechCommercial Insurance2 APIs28.6 Leeds Building SocietyFinancial-ServicesBankingBuilding SocietyMutual4 APIs28.4 Pod PointEnergyEV ChargingElectric Vehicles1 API27.1 British AirwaysTravelAviationAirline1 API26.8 E.ON NextEnergyUtilitiesElectricity1 API26.8 Heathrow AirportTravelAirportsAviation3 APIs26.8 Ki InsuranceInsuranceLloyd's of LondonSpecialty Insurance1 API26.8 Science Museum GroupMuseumsCollectionCultural HeritageOpen Data4 APIs26.8

Emerging 93 Early or largely undocumented

Minimal 60 Almost no public developer surface

Bloom & WildCompanyE-CommerceRetailFlowers10.8 CarmoolaCompanyFintechAutomotiveCar Finance10.6 ProGradCompanyConsumerRewardsMobile App10.6 ProportunityCompanyFintechPropTechMortgage10.6 Truly ExperiencesCompanyExperienceGiftingE-Commerce10.6 MedeferCompanyHealthcareHealthNHS10.5 On the BeachTravelOTAOnline Travel Agency10.5 GoustoCompanyConsumerMeal KitFood Delivery10.4 The Modern MilkmanCompanyConsumerGrocery DeliveryDirect to Consumer10.4 NumanCompanyHealth TechTelemedicineTelehealth10.2 WollitCompanyFintechCreditCredit Building10.2 Push DoctorCompanyHealthcareTelehealthTelemedicine10.0 DwellyCompanyReal-EstateProperty ManagementLettings9.9 HabitoCompanyFintechMortgagesLending9.7 OxaCompanyAutonomous VehiclesAutomotiveRobotics9.7 RepositCompanyFintechPropTechInsurance9.7 SuperscriptCompanyInsuranceBusiness InsuranceInsurtech9.7 TaxscoutsCompanyTaxAccountingFintech9.7 So SureCompanyInsuranceInsurtechMobile Insurance9.3 DishpatchCompanyFoodMeal DeliveryFood Delivery9.2 SourcefulPackagingSustainable PackagingPackaging DesignVisual AI9.2 Fuse EnergyCompanyEnergyEnergy SupplierElectricity9.1 YonderCompanyFinancial-ServicesFintechCredit Cards9.1 LottieCompanyHealthcareCare HomesElderly Care9.0 Direct Line GroupInsuranceProperty and CasualtyPersonal Lines8.7 LantumHealthcareWorkforce ManagementNHS8.7 VodafoneTelecommunicationsTelcoMobile Network Operator5G27 APIs8.7 BT GroupTelecommunicationsTelcoMobile NetworkBroadband15 APIs8.5 TuliCompanyHealthcareDiagnosticsBlood Testing8.5 Urban JungleInsuranceInsurtechProperty and Casualty8.3 Close BrothersFinancial-ServicesBankingMerchant BankingSpecialist Lending8.2 Atom BankCompanyFintechBankingDigital Bank8.0 TineyCompanyFuture Of WorkChildcareEarly Years Education8.0 SavillsReal-EstateCommercial Real EstateProperty Listings7.9 NOTHSCompanyRetailE-CommerceMarketplace7.6 THGCompanyE-CommerceConsumer BrandsBeauty7.6 LawhiveCompanyLegalLegal ServicesLegal Tech7.5 Chipper CashFintechAfricaCross-Border PaymentsMoney Transfer7.3 EvriLogisticsSupply ChainParcel6.9 VsimCompanyArtificial IntelligenceRoboticsPhysics Simulation6.7 IMP SoftwareCompanyEducationEdTechFintech5.9 Jet2TravelAviationAirline5.9 TekeverDefenseDefence TechnologyUnmanned Aerial SystemsDrones5.5 Cambridge AerospaceCompanySecurityDefenseAerospace5.0 CazooCompanyE-CommerceAutomotiveUsed Cars5.0 crowdcubeCompanyEquity CrowdfundingInvestingFintech5.0 FluidlyCompanyFintechCash FlowCash Flow Forecasting5.0 GetagentCompanyPropTechReal-EstateEstate Agents5.0 HassleCompanyConsumerCleaningHome Services5.0 nestedCompanyReal-EstatePropTechEstate Agency5.0 OneSwoopCompanyAutomotiveCarsPrice Comparison5.0 PrimaryBidCompanyFintechCapital MarketsIPO5.0 rentifyCompanyPropTechReal-EstateProperty Management5.0 CeraHealthcareTelehealthHome Care3.7 Circle Health GroupCompanyHealthcarePrivate HospitalsMedical3.3 getdinghyCompanyInsuranceInsurtechFreelancers2.3 TuzaCompanyFintechBankingAI Agents1.5 TrussleCompanyMortgageFintechFinancial-Services1.2 City Reach InternationalCompanyTelecommunicationsInternet InfrastructureDefunct0.6 LanistarCompanyDefunctFinancial-ServicesFintech0.0

APIs with this tag (68)

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 →

Strong 16 Solid coverage with minor gaps

EDF Kraken Customer Migration (Data Import) APIA second, separately published first-party OpenAPI 3.0.3 document describing the Kraken customer-migration ...62.9 EDF Kraken GraphQL APIEDF Energy's primary developer API, and the surface EDF markets as its "open tariff APIs". It is the Kraken...62.9 EDF Kraken REST APIThe REST half of EDF's Kraken platform API, described by a first-party OpenAPI 3.0.3 document that EDF serv...62.9 HM Land Registry Open Data SPARQL APILive SPARQL 1.1 query endpoint over HM Land Registry's open linked data — Price Paid Data transaction recor...58.5 HM Land Registry Price Paid Data Linked Data APIW3C Linked Data API over the Price Paid Data dataset, exposing every property sale in England and Wales sol...58.5 Land Register APIAn OpenAPI 3.0.1 contract, version 6.0.0, titled "Land Register API" and published in the public Business G...58.5 UK House Price Index Linked Data APIW3C Linked Data API over the UK House Price Index, the official house price statistic calculated by the Off...58.5 Spectre APIThe public API for the Spectre products, documented on the Street.co.uk developer portal and integrated int...55.4 Street Open APIThe main Street.co.uk platform API — a JSON:API-conformant REST interface over the estate agency system of ...55.4 Street Property Feed APIA read-only property feed API for powering an agency's own website and property search — sales search, lett...55.4 Reapit AgencyCloud Desktop APIA custom URI-scheme API, not an HTTP API, used by AppMarket web applications hosted inside the AgencyCloud ...55.0 Reapit Foundations GraphQL APIA GraphQL proxy over the Foundations Platform REST API, released publicly out of internal beta and used in ...55.0 Reapit Foundations MCP Server (Alpha)An alpha Model Context Protocol server exposing the Foundations platform to AI agents over Streamable HTTP ...55.0 Reapit Foundations Notifications APIAn inbound API that lets a third-party application push real-time event notifications into Reapit products ...55.0 Reapit Foundations Platform REST APIThe core Foundations REST API over the Reapit agency CRM data platform. It is documented as a hypermedia RE...55.0 Reapit Foundations WebhooksReal-time outbound event delivery from the Reapit CRM to an endpoint you host. Webhooks are created either ...55.0

Developing 34 Usable, with meaningful gaps to close

Stotles MCP ServerHosted, remote Model Context Protocol server exposing Stotles public sector market data to AI chat tools an...52.8 Stotles Public APIREST API giving programmatic access to UK and Ireland public sector procurement data — notices, buyers, sup...52.8 Alto APIThe full Alto REST API for UK estate agency operations — 95 documented paths across 27 resource families co...50.1 Zoopla Leads APISwagger 2.0 poll API for retrieving applicant leads and appraisal (valuation) leads generated on the Zoopla...50.1 Zoopla Premium Listing Activations APIOpenAPI 3.0.0 contract for activating and inspecting Zoopla Premium Listing products against a property lis...50.1 Zoopla Weekly Featured Property (WFP) Activations APIOpenAPI 3.0.0 contract for activating Zoopla Weekly Featured Property placements against a listing, exposed...50.1 Ofcom Connected Nations Broadband APIReturns predicted fixed broadband availability for a UK postcode from Ofcom's Connected Nations dataset — p...48.6 Ofcom Connected Nations Mobile APIReturns predicted mobile coverage for a UK postcode from Ofcom's Connected Nations dataset, scored 0 (none)...48.6 Hometrack Broker AVM APIHometrack's own catalogue description is "This API provides access to the Broker AVM service." Twelve opera...46.0 Hometrack Climate GraphQL APIA GraphQL API registered in Hometrack's API Management catalogue with type "graphql" and path /climate/grap...46.0 Acquiring Processor - Acquirer API (ACAPI)Acquirer API (ACAPI, v1) for Tribe's acquiring-processor platform, covering acquirer-side transaction proce...45.8 Acquiring Processor - Merchant API (MAPI)Merchant API (MAPI, v1) for onboarding and managing merchants on Tribe's acquiring-processor platform. Docu...45.8 Acquiring Processor - Terminal API (TAPI)Terminal API (TAPI, v2) for integrating physical payment terminals with Tribe's acquiring-processor platfor...45.8 Acquiring Processor - Tokenization API (TOKAPI)Tokenization API (TOKAPI, v1) for tokenizing card data within Tribe's acquiring-processor platform. Documen...45.8 Bank Connect - Payment Services APIPayment Services API (v1) for Tribe's Bank Connect / Banking-as-a-Service product, enabling fintechs to emb...45.8 Issuer Processor - Program Manager API (PM API)Program Manager API (v1.2) for card issuers to interact with Tribe's ISAAC issuer-processing platform - iss...45.8 Open Banking - Bank APITribe Payments Open Banking Bank API (v2) - the bank/ASPSP-facing side of Tribe's Open Banking product, exp...45.8 Open Banking - Third-Party Providers API (TPP)Tribe Payments Open Banking Third-Party Providers (TPP) API (v2) - the TPP-facing side of Tribe's Open Bank...45.8 Payment Gateway - Credit Card APITribe Payments Gateway Credit Card API (v3) for merchants processing credit and debit card e-commerce (ECOM...45.8 Payment Gateway - Credit Card Token APITribe Payments Gateway Credit Card Token API (v3) for tokenizing card credentials so merchants can store an...45.8 Payment Gateway - Hosted Payments API (HPP)Tribe Payments Gateway Hosted Payments Page API (v3) that lets merchants collect card payments through a Tr...45.8 Payment Gateway - Reports APITribe Payments Gateway Reports API (v3) providing merchants programmatic access to transaction reporting an...45.8 Point of Sale - Device Directory APITribe Payments Point of Sale Device Directory API (v3) for registering, managing, and querying the estate o...45.8 Risk Monitor - Client APITribe Payments Risk Monitor Client API (v1.1) for real-time fraud and transaction-risk monitoring, letting ...45.8 SP Energy Networks Open Data Explore APIThe live, anonymous REST API behind the SP Energy Networks Open Data Portal — ScottishPower's regulated dis...44.5 SP Energy Networks Open Data Search API (v1.0)The legacy Opendatasoft Search API v1.0 still served alongside Explore v2.1 on the SP Energy Networks Open ...44.5 CAA Consultations APIThe Citizen Space (Delib) public consultation API deployed on the CAA's consultations domain. Two documente...43.9 Sprift Data and API (v2, advertised)The API family Sprift advertises on its Data and API product page, recorded here as advertised and NOT as v...41.0 Sprift Insider APIThe Insider tag of the published Sprift v1 contract — two operations exposing the market intelligence produ...41.0 Sprift Property APIThe Property tag of the published Sprift v1 contract — the largest family in the harvested Swagger document...41.0 Sprift Property V2 APIThe Property V2 tag of the published Sprift v1 contract — eight operations that resolve and decompose a pro...41.0 Sprift Report Share APIThe Share tag of the published Sprift v1 contract — a single POST /share operation that produces a shareabl...41.0 Sprift Search APIThe Search tag of the published Sprift v1 contract — three operations for finding a property before you can...41.0 Sprift User APIThe User tag of the published Sprift v1 contract — two operations, POST /user/login and GET /user/logout, t...41.0

Thin 15 Limited public surface area

Zoopla Leads APIPoll-based REST API used by Zoopla member agents to retrieve consumer leads generated on the portal. Applic...37.9 Zoopla Premium Listing Activations APIREST API that lets a member agent's CRM activate the Premium Listing product against a Zoopla listing, read...37.9 Zoopla Weekly Featured Property (WFP) Activations APIREST API for activating the Weekly Featured Property product on a Zoopla listing from an agency CRM, readin...37.9 char.gy OCPI CPO Roaming APIchar.gy's commercial Open Charge Point Interface implementation in the Charge Point Operator role, used so ...36.6 char.gy Open Charge Point Data APIchar.gy's statutory open data feed, published to satisfy Part 4 regulation 10 of the UK Public Charge Point...36.6 Apex27 CRM APIThe Apex27 CRM API is the vendor's REST interface over the estate agency CRM, covering contacts, leads, lis...31.9 Apex27 Portal APIThe Apex27 Portal API is the per-tenant, website-facing API that drives search and enquiry on Apex27-built ...31.9 FCA Data Publication API (FIRDS / FITRS)Anonymous machine-to-machine query interface over the file artefacts the FCA publishes through data.fca.org...31.8 FCA Financial Services Register APIRead-only REST API over the Financial Services Register, the FCA's public record of authorised firms, indiv...31.8 DHL eCommerce UKHandles domestic and international parcel shipments originating from the United Kingdom through DHL eCommerce.29.5 Rightmove Commercial Listings APIThe Commercial Listings API allows commercial agents and feed providers to upload, update, retrieve and rem...29.4 Rightmove Real Time Data Feed APIThe Real Time Data Feed (RTDF) is Rightmove's incremental HTTPS/JSON interface for UK sales, lettings and o...29.4 Good Energy Customer Identity (OpenID Connect)The OpenID Connect / OAuth 2.0 identity provider behind Good Energy's customer hub at account.goodenergy.co...29.1 KnightFrank Api v3The corporate search service behind knightfrank.com and knightfrank.co.uk, titled "KnightFrank Api v3" by i...29.1 Pod OCPI 2.2.1 CPO APIPod's Open Charge Point Interface (OCPI) 2.2.1 service in the Charge Point Operator role, used for e-mobili...27.1

Emerging 2 Early or largely undocumented

Connells Website JSON API (undocumented)An undocumented, unauthenticated, read-only JSON surface served by the Connells consumer website at https:/...24.0 OnTheMarketUK residential property portal acquired by CoStar Group, providing for sale and to let listings with agent ...17.5

Minimal 1 Almost no public developer surface

Rail Insights APIProvide strategic insights into current and future demand on the UK's railway network derived from BT's mob...8.5

Score breakdown

Frequency

71.0

log-scaled weighted occurrences

Breadth

8.7

spread across providers

Quality lift

34.5

mean composite of providers using it

Cohesion

12.1

strength of nearest seed neighbor

Where this tag comes from

Provider tag316

Api tag68

Cohort brief

Auto-generated

The 318 providers in the APIs.io catalog tagged United Kingdom, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

318

all scored

Mean Kin Score

28.7

+8.0 vs catalog 20.7

Mean Agent Readiness

15.9

+6.2 vs catalog 9.7

Spread

0–65.4

median 27.8 · σ 16.6

How the 318 split by band

Exemplar 0Strong 19Developing 83Thin 63Emerging 93Minimal 60

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Discoverability	68.2	60.4	+7.8	318
Developer Ergonomics	24.6	17.9	+6.7	318
Access Clarity	28.8	22.3	+6.5	318
Contract Quality	23.6	17.5	+6.1	318
Contract Governance	11.5	6.4	+5.1	318
Operational Transparency	15.2	11.3	+3.9	318

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)	33%	16%	+17
MCP server (first-party)	3%	7%	-4
Agent Skills	0%	0%	0
OAuth scopes	27%	9%	+18
Security	97%	88%	+9
Arazzo workflows	3%	2%	+1
Governance rules	7%	13%	-6

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

Work with this as data

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cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
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apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

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This tag

curl "https://apis.io/api/v1/tags/united-kingdom"

All tags

curl "https://apis.io/api/v1/tags?limit=25"

As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/united-kingdom"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/united-kingdom/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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