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 3 Complete, well-documented, and agent-ready

Elation Reference Data APIRetrieve shared reference and lookup data used across the Elation platform via the Elation API v2.0.84.1 Twelve Data Reference Data APICatalogs of instruments, exchanges, and supporting metadata.76.7 Availity Payer List APIThe Availity Payer List API (v1.0.4) allows healthcare organizations to query available payers and the tran...75.4

Strong 27 Solid coverage with minor gaps

Logz.io Lookup Lists APICRUD for reference data used to enrich and filter logs and alerts. Customers upload lookup lists of IPs, ho...65.2 EODHD Exchanges and Symbols APILists supported exchanges and instruments with metadata including ticker, exchange code, name, type, and id...64.9 Flutterwave Banks APIReference data for banks, bank branches, and mobile networks supported by country, plus bank account name-e...63.9 Bloomberg BLPAPI CoreThe Bloomberg Open API (BLPAPI) Core — the foundational service-oriented, socket-based API used by the Desk...63.8 Bloomberg Data License APIProvides programmatic access to Bloomberg Data License content including reference, pricing, regulatory, ES...63.8 Bloomberg Server API (SAPI)Delivers real-time market data, historical data, reference data, and calculation engine capabilities from t...63.8 Factiva Code APIEnables retrieval of codes necessary to search for companies, currencies, exchanges, locations, industries,...61.9 Factiva DJID Taxonomy APIExplores the taxonomy of the Factiva databases using Dow Jones Intelligent Identifiers (DJID). Provides acc...61.9 Lukka Reference Data APIThe Reference Data API from Lukka — 3 operation(s) for reference data.61.2 Nutshell Industries APIThe industry reference list used to classify accounts. 1 operation(s) across 1 path(s).60.8 Zenserp Lists APIReference list endpoints publishing the enumerations the Search API parameters must draw from: supported in...60.5 Serper Locations APICanonical Google geo-target lookup for the location parameter used by every Serper search endpoint, plus a ...59.7 Databento Metadata APIDiscovery and cost-estimation endpoints for the historical catalog. List publishers, datasets, schemas, and...58.9 Databento Reference APIReference and non-price data that complements the market data feeds - a security master (instrument definit...58.9 Databento Symbology APIResolves symbols between Databento's symbology systems - raw symbol, instrument ID, parent, and continuous ...58.9 Bloomberg BLPAPI (Desktop API)BLPAPI is Bloomberg's core programming interface for the Bloomberg Terminal Desktop API, Server API (SAPI),...57.5 Bloomberg Data License (DL / BEAP)Bulk reference, pricing, regulatory, and alternative-data delivery service covering over 50 million securit...57.5 Kaiko REST APIREST endpoints for trades, order books, OHLCV, market reference, trade flows, FX rates, and derivatives acr...57.5 NextRoll Geotargeting APISearch for the geotargeting EIDs used when setting geographic targets on AdRoll and AdRoll ABM campaigns.57.5 Workday Reference Data APIEndpoints for accessing common reference data and lookup values.56.8 first direct Open Data APIPublic, unauthenticated OBIE Open Data API exposing first direct product reference data - personal current ...56.2 SIX Bulk APIREST/JSON bulk retrieval of the entire SIX financial data catalog - corporate actions, equities and fixed i...56.0 SIX Web APISingle API onto the SIX financial data universe - real-time, intraday, end-of-day, and historical pricing a...56.0 Deel Reference Data APIDepartments, locations, employment types, sources, tags, reasons55.0 A7 Analytics Platform - CME Reference Data API (SD)CME Group security-definition reference data served through the A7 Analytics Platform REST API.54.4 A7 Analytics Platform - Reference Data API (RDI) v2Reference data for T7 venues (markets, market segments, securities) from the Reference Data Interface, vers...54.4 Eurex T7 Reference Data APIFree GraphQL API for Eurex T7 reference data (products, contracts, instrument attributes) in machine- and h...54.4

Developing 67 Usable, with meaningful gaps to close

H1 Ribbon Reference Data APIShared reference data and custom taxonomies - insurances, specialties, procedures, provider types, location...53.8 Starling Open Data API (OBIE Standard)UK Open Banking Open Data API - PUBLIC, unauthenticated reference data (personal and business current accou...53.3 LeaseAccelerator Reference Data APIThe Reference Data API from LeaseAccelerator — 8 operation(s) for reference data.52.3 About BeazleyPublic-facing reference data on Beazley's people and divisions, with person lookup by record id, profile im...52.0 Beazley Currency ExchangeA standard set of foreign exchange rates for Beazley systems, exposing rates, rate providers and supported ...52.0 Beazley Fast ReaderInsurance glossary and knowledge API providing definitions of insurance terms, frequently asked questions b...52.0 Finalcad One Libraries APIRead-only Finalcad reference libraries — module colors, module icons, module suggestions, application langu...52.0 Bloomberg AIM Reference Data APIRequest reference (static) data for securities51.9 Arthur Types APIRead-only reference vocabularies backing every enumerated field in Arthur - access detail types, applicant ...51.8 LSEG World-Check One Reference APIReference data for screening - countries, nationalities, providers, search filters, World-Check profiles an...51.7 Organisation Data Service (ODS) - FHIR APIReference data on NHS and healthcare organisations, roles and terminology (the Organisation Data Service), ...51.5 Service Search (Directory of Healthcare Services) APISearch the national Directory of Healthcare Services for NHS organisations, services and their attributes. ...51.5 Hostaway Reference Data APIReference-data endpoints for cancellation policies (Airbnb, Vrbo, Booking.com, Marriott), countries, curren...51.2 LSEG DataScope Select REST APIREST API providing programmatic access to the DataScope Select platform for extracting global prices, corpo...50.6 Symbology APIDiscovery Symbology API for concordance, navigation, and discovery of financial content. Enables mapping fr...50.6 PPL Organisations APIRetrieves the organisation reference data held in the platform that is a prerequisite for interacting with ...50.4 Avito ReferenceData APIThe ReferenceData API from Avito — 2 operation(s) for referencedata.49.8 INRIX Data Download ServiceQueries and downloads static INRIX data deliverables organized by product, dataset and file - beginning wit...49.2 INRIX Gateway Map Version APIReports the current INRIX map and XD network version in use, so consumers can align segment identifiers wit...49.2 Restaurant365 Reference Data APICompanies, locations, GL accounts, items, and job titles48.9 Confident LIMS Reference Data APIReference data for sample metadata48.8 CME Reference Data APIA set of JSON RESTful web service APIs that provide access to product and instrument reference data for CME...47.3 Crunchbase Fundamentals - Firmographic PackageCore and advanced firmographics for private and public companies - name, type, legal status, employee count...47.1 AirlinesReturns reference data for airlines including airline name, IATA code, and ICAO code. Supports lookup by id...46.8 AirportsReturns detailed reference data for airports worldwide, including full airport name, IATA and ICAO codes, g...46.8 Workday Integration Reference Data APIThe Reference Data API from Workday Integration — 8 operation(s) for reference data.46.8 ICE Data Services APIThe ICE Data Services API provides access to market data, reference data, and analytics from Intercontinent...46.1 Morningstar Investment Details APIsDeep security-level data for equities and managed investments - profiles, ratings, performance, holdings, f...46.0 Morningstar Universe APIUtility API for resolving the investment universes and identifiers available to an account across Direct We...46.0 Coin Metrics Reference Data APIMetadata information of entities supported by Coin Metrics.45.8 Confident Cannabis Reference Data APIReference data for sample metadata45.8 Moody's Orbis (Bureau van Dijk) APIAccess to Orbis, the Bureau van Dijk company information database covering hundreds of millions of public a...45.2 dxFeed Instrument Profile (IPF) Web ServiceReference-data web service for requesting instrument profiles in dxFeed's Instrument Profile Format (IPF), ...44.7 Hampden & Co Open Data APIPublic, unauthenticated Open Data reference API conforming to the OBIE UK Open Banking Open Data standard (...44.7 CCIN Extracts APICorporate Creditor Identification Number (CCIN) extracts API returning master and updated extract data matc...44.6 CCIN Lookup APICorporate Creditor Identification Number (CCIN) single-lookup API returning weekly extract data for a speci...44.6 FIF Branch APIFinancial Institutions File (FIF) branch API returning weekly branch extract data for Canadian financial in...44.6 FIF Extracts APIFinancial Institutions File (FIF) extracts API returning master and weekly updated extract data for Canadia...44.6 TSB Open Data APITSB's public, unauthenticated Open Data API conformant to the OBIE Open Data API Standard, exposing referen...44.4 TradeStation Reference Data APIAccess reference data for order execution including activation triggers and available routing destinations.43.8 Bombora Reference APIReference data and taxonomy lookups for the Bombora platform — including intent topics, topic clusters, and...43.6 AESO Asset List APIThe registry of market assets on the Alberta Interconnected Electric System, served from /assetlist — the r...43.5 AESO Pool Participant APIThe latest list of pool participants operating in the Alberta Interconnected Electric System, served from /...43.5 B3 ISIN APIISIN issuance and management for financial instruments - B3 is the Brazilian numbering agency - covering IS...43.4 B3 Tesouro Direto APIsTreasury Direct platform APIs - the Bonds API serves reference data for Brazilian public bonds (name, matur...43.4 B3 UP2DATAEnd-of-day and reference data service covering fixed income, equities, currencies, and debentures for mark-...43.4 Tango Reference Data APIExchange rates, reward countries, and credential types43.4 FX Reference Data APIService providing reference data for LSEG FX venues, offering instrument and venue configuration data to su...42.9 LSEG DataScope Select - SOAP APISOAP-based web service API for DataScope Select, providing extraction functionality for global pricing, ref...42.9 Temenos Transact Reference Data APIAccess system-wide lookup and configuration data including currencies, countries, IBAN/BIC validation, inte...42.3 SAP Fieldglass Pick List Value Download APIRetrieves configurable pick list values from SAP Fieldglass for use in integration and data validation, inc...42.1 Aldermore Open Data API (OBIE Standard)The UK Open Banking Open Data API standard (public, unauthenticated reference data such as products, ATMs, ...42.0 TMX Corporate Actions and Reference Data APIIssuer profiles, global symbol directories and deltas, and global corporate actions via /v1/ca/issuers, /v1...42.0 TMX Data Science API V2 (Insight API)Second-generation GET-based REST surface on insightapi.tmxanalytics.com/v2 covering broker analytics, issue...42.0 Customers Bank IT Operations APIIT Operations / reference-data API providing bank lookups (ABA, BIC), correspondent (SSI) instructions acro...41.6 GLEIF Reference Data APIReference data including entity legal forms and registration authorities41.6 VA Lighthouse Reference Data APIThe Reference Data API from VA Lighthouse — 9 operation(s) for reference data.41.6 Bloomberg Buyside Enterprise Solutions Reference Data APISecurity reference data including identifiers, classifications, and descriptive information41.2 Bloomberg Data APIProgrammatic access to Bloomberg's financial data including reference data, historical pricing, corporate a...41.2 Benefits Reference Data APIProvides reference data used for VA benefits forms and applications, including lists of service branches, d...41.1 EVE Static Data Export (SDE)The EVE Static Data Export (SDE) is the bulk download of all the static reference data behind the EVE unive...40.5 Xignite Global Master APIGlobal security master and reference data - symbology, listings, identifiers, and instrument metadata - fro...40.4 MemberClicks Reference Data APIMember types and statuses.40.3 Bloomerang Reference Data APIUsers, funds, campaigns, and appeals used as designations and attribution.40.1 NOAA Fisheries One Stop Shop (FOSS) ODS / ORDSThe Fisheries One Stop Shop (FOSS) Operational Data Store, hosted on Oracle REST Data Services (ORDS), expo...40.1 Secure Trust Bank Open Data API (OBIE Standard)The UK Open Banking Open Data API - a public, unauthenticated reference-data surface for ATMs, branches and...39.9 Informatica Reference 360 REST APIThe Reference 360 REST API enables programmatic management of reference data, including exporting and impor...39.5

Thin 50 Limited public surface area

Monument Bank Open Data APIUK Open Banking Open Data API - the PUBLIC, unauthenticated reference-data surface defined by the OBIE Open...39.2 UK Open Banking Open Data API (OBIE Standard)Shared UK Open Banking Open Data standard for public, unauthenticated reference data (ATMs, branches, perso...38.2 Provet Cloud Reference Data APIItems, departments, users, and code lists.38.1 QUODD Reference Data & Security Master APIGlobal reference data and security master (Global Master) - intra-day global equity descriptive data, funds...38.1 QUODD Ticker Search APITicker and symbol lookup for discovering securities across asset classes and identifiers (Cloud Search). Li...38.1 EOC Basemap Web Map Service (WMS)OGC Web Map Service providing basemap and core geospatial reference layers from DLR including global mosaic...37.6 HotelRunner Reference Data APIRead-only lookup data used for property and integration setup.37.5 SAP Ariba Dynamic Lookup Table APIManages dynamic reference and lookup tables for configurable procurement data.37.4 SAP Ariba Master Data Retrieval API for ProcurementRetrieves procurement master data including cost centers, accounts, and units of measure.37.4 SAP Ariba Master Data Retrieval API for SourcingObtains master data for sourcing operations including commodity codes and regions.37.4 Stats Perform Reference Data APIAccess reference data including league definitions, network types, and decode tables for API response values.37.2 Bloomberg Data License APIBulk data delivery service for historical and reference data.37.0 SVB Reference APIThe Reference API provides look-up and reachability data supporting the payment products. It exposes /v1/re...36.6 S&P Global Reference Data APISymbol and contract reference data35.8 Shawbrook Open Data API (OBIE Standard, Unverified)UK Open Banking Open Data API — the PUBLIC, unauthenticated reference-data surface (ATM locations, branches...35.8 VA Benefits Reference Data APIReference data lookups for benefits-claim form fields (countries, states, disabilities, treatment centers, ...35.6 Open Charge Map Reference Data APIREST API endpoint returning core reference data used for interpreting POI results, including connection typ...35.4 Open Charge Map Referencedata APIThe Referencedata API from Open Charge Map — 1 operation(s) for referencedata.35.4 Paragon Bank Open Data API (OBIE standard, unverified)The UK Open Banking Open Data API - a public, unauthenticated reference-data surface (ATMs, branches, perso...34.8 OpenPrescribing Information APIReference-data lookups for the prescribing dataset — search BNF sections, chemicals and presentations by na...34.7 Elead Reference Data APILookup data supporting the other Vehicle Sales APIs.34.2 OBIE Open Data API (Shared Standard - Unverified for Principality)The UK Open Banking Implementation Entity (OBIE) Open Data API standard - public, unauthenticated reference...33.2 BigChange Reference Data APIThe Reference Data API from BigChange — 1 operation(s) for reference data.33.1 Cisco Product Information APIThe Product Information API returns Cisco product attributes for a set of serial numbers or product identif...33.1 Xfactor.io Value Facts APIReference-data service for the value model — accrual types, area types, case-study improvement types, cost ...33.0 US Bank Holidays APIThe Bank Holidays API provides information about U.S. Bank processing holidays and Federal Reserve banking ...32.9 Manitoba Hydro ArcGIS Server Reference DataAn ArcGIS Server 10.91 REST services directory hosted on Manitoba Hydro's own domain at maps.hydro.mb.ca, r...32.5 Lloyd's Catastrophe Codes API v1Lloyd's catastrophe event reference data served from the London Market API Gateway — the market's canonical...32.3 Murex Reference Data APIMarket reference and static data31.9 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 HKEX Data Marketplace Historical DataWeb-based storefront for HKEX historical and reference data straight from the exchange - historical full or...30.9 HKEX FINI APIThe FINI (Fast Interface for New Issuance) API Gateway offers RESTful JSON endpoints (e.g. GET /api/ipos/li...30.9 BMLL Reference Data APIQuery reference data for the instruments, listings, and markets in the BMLL universe (equities, ETFs, futur...30.5 Lufthansa Reference Data APIThe Reference Data API from Lufthansa — 6 operation(s) for reference data.30.5 Citi Utilities APIThe Citi Utilities API provides supporting reference data such as foreign-exchange rates, branch and ATM lo...30.0 Fabric Origin Common Data APIThe Common Data API exposes reference data used across the Fabric Origin product family, including country ...29.6 SmartMoving Reference Data APIAccount lookup data - branches, users, service types, referral sources.29.6 Euronext Web Services Indices APIIndex-level data for Euronext indices delivered through the Euronext Web Services JSON API, documented in a...28.4 OBIE Open Data API (shared standard)The UK Open Banking (OBIE) Open Data API standard for public, unauthenticated reference data - ATM location...28.4 Bloomberg Open API (BLPAPI)The core Bloomberg API providing real-time market data, reference data, historical data, and intraday tick ...28.2 AppDynamics Reference Data APIRetrieve lists of supported cloud regions and services for connection configuration.28.0 U.S. Geological Survey Reference Data APIReference code tables including agency codes, datum types, and aquifer data.28.0 EDI Derivatives Reference Data APIListed derivatives security master reference data via the GetOptionSecurityMaster endpoint, covering exchan...27.0 EDI Index Constitution APIIndex constituent reference data via the GetReferenceNameForIndexConstituents endpoint.27.0 EDI Securities Reference Data APIConsolidated securities reference file (SRF) data for worldwide listed instruments via the GetConsolidatedS...27.0 EDI Worldwide Fixed Income Corporate Actions APIFixed income security master and corporate actions coverage for bonds via the GetBondSecurityMaster endpoint.27.0 EDI Worldwide Shares Outstanding APIShares outstanding figures for worldwide listed equities via the GetLatestSharesOutstanding endpoint.27.0 STACK Reference Data APIRead-only lookup endpoints for cost types, states, and countries used when constructing projects and estima...26.8 Bloomberg Data License APIProvides programmatic access to Data License content via REST API, SFTP, or cloud providers, with available...26.6 Bloomberg Server API (SAPI)Lightweight server-side API that delivers real-time market, historical, and key reference data as well as c...26.6

Emerging 24 Early or largely undocumented

NCBI Entrez E-utilitiesThe set of nine programmatic interfaces (ESearch, EPost, ESummary, EFetch, ELink, EInfo, EGQuery, ESpell, E...24.5 Bloomberg Data License APIProvides programmatic access to Bloomberg's comprehensive financial data including pricing, reference data,...23.4 Bloomberg Hypermedia API (HAPI)Provides programmatic access to Data License content with a combination of request-response and subscriptio...23.4 Fenics Market DataFenics Market Data (FMD) is the exclusive data distributor of BGC Group, Inc. and its affiliates. FMD provi...22.9 CarGurus Body Type Groups APIProvides vehicle body type classification and translation data, mapping CarGurus body type identifiers to h...22.6 BICS Reference Data APIThe Reference Data API from BICS — 1 operation(s) for reference data.22.2 Bloomberg Open API (BLPAPI)The Bloomberg Open API (BLPAPI) enables programmatic access to Bloomberg Terminal data from applications ru...21.1 YGOPRODeck Reference Data APIValid value enumerations used by the search engine.20.6 Lufthansa Cargo Station Information APIReference data for Lufthansa Cargo stations worldwide, keyed on 3-letter IATA station codes. Lists all stat...20.3 OurAirports Countries DatasetReference CSV dataset of sovereign states and country-like entities used to cross-reference the iso_country...19.8 OurAirports Regions DatasetReference CSV dataset of high-level administrative subdivisions (states, provinces, territories) used to cr...19.8 Bloomberg Open API (BLPAPI)The core Bloomberg API providing real-time market data, reference data, historical data, and intraday tick ...19.7 Bloomberg Open API (BLPAPI)The core API providing programmatic access to the Bloomberg data ecosystem including real-time prices, refe...19.7 Bureau of Reclamation Reference Data APIThe Reference Data API from Bureau of Reclamation — 4 operation(s) for reference data.19.7 ICAO Aircraft APIEndpoints providing aircraft reference data including DOC8643 aircraft type designators, manufacturer infor...19.2 ICAO Airports APIEndpoints exposing ICAO airport reference data including DOC7910 location indicators, airport metadata, and...19.2 ICAO API Data ServiceThe ICAO API Data Service provides programmatic access to authoritative civil aviation data published by IC...19.2 ICAO Operators APIEndpoints providing operator reference data including DOC8585 three-letter operator designators, telephony,...19.2 ICAO States APIEndpoints providing reference and statistical data on ICAO Member States, including state-level aviation ac...19.2 Bloomberg Data APIProvides programmatic access to Bloomberg's extensive financial data including market data, reference data,...18.9 Bloomberg Data License APIProvides batch delivery of Bloomberg's reference, pricing, and analytics data for integration into propriet...17.9 Norgate Data Security Metadata and ClassificationsSingle-value reference and metadata lookups for a security - name, symbol, asset id, domicile, currency, ex...16.6 SAM.gov Product Service Codes (PSC) APIPSC API provides PSC data (PSC Code, PSC Name, PSC Full Name, Status, Parent PSC Code, Start Date, End Date...11.7 SAM.gov Public Location Services APIThe Public Location Services API provides Location Services data (Country, State, City, ZIP) for validating...11.7

Minimal 3 Almost no public developer surface

Antech Reference Data & Test Catalog APIModeled reference surface exposing Antech's test catalog - test codes, panels, and species/breed reference ...9.6 Address Management APISearch the Rest of BT (RoBT) and Openreach address databases to retrieve address records and address keys f...8.5 IDEXX VetConnect PLUS Reference Data APIReference resources that underpin ordering and results - the IDEXX test and panel catalog, analyte/test cod...8.3

Score breakdown

Frequency

66.2

log-scaled weighted occurrences

Breadth

4.2

spread across providers

Quality lift

49.8

mean composite of providers using it

Cohesion

13.5

strength of nearest seed neighbor

Where this tag comes from

Api tag176

Provider tag41

Openapi tag36

Openapi op tag147

Cohort brief

Auto-generated

The 154 providers in the APIs.io catalog tagged Reference Data, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

154

all scored

Mean Kin Score

+20.3 vs catalog 20.7

Mean Agent Readiness

24.9

+15.2 vs catalog 9.7

Spread

8.3–84.1

median 41.2 · σ 14.5

How the 154 split by band

Exemplar 6Strong 21Developing 59Thin 45Emerging 20Minimal 3

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Contract Quality	43.5	17.5	+26	154
Developer Ergonomics	40.1	17.9	+22.2	154
Access Clarity	38.6	22.3	+16.3	154
Discoverability	74.3	60.4	+13.9	154
Operational Transparency	23.8	11.3	+12.5	154
Contract Governance	17.4	6.4	+11	154

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)	35%	16%	+19
MCP server (first-party)	9%	7%	+2
Agent Skills	0%	0%	0
OAuth scopes	32%	9%	+23
Security	99%	88%	+11
Arazzo workflows	6%	2%	+4
Governance rules	34%	13%	+21

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 Elation Health 84.1
2 Twelve Data 76.7
3 Availity 75.4
4 Explorium 69.9
5 People Data Labs 67.9
6 Enrich 66.9
7 Logz.io 65.2
8 EODHD 64.9
9 Flutterwave 63.9
10 Bloomberg 63.8

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curl "https://apis.io/api/v1/cohorts/tag/reference-data"

The distribution (Pro)

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Reference Data

Providers using this tag (154)

APIs with this tag (174)