established · 0.6 capabilitymarket actiondomainresource

Lookup

Score 24.3 / 100 47 providers 47 APIs Search apis.io →
Variants seen in the corpus: Lookuplookup

Providers using this tag (47)

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

Exemplar 2 Complete, well-documented, and agent-ready
ZoomInfoB2BB2B DataCompany DataContact Database29 APIs80.8WappalyzerTechnology DetectionTechnographicsWebsite AnalysisCMS Detection11 APIs70.9
Strong 5 Solid coverage with minor gaps
AvalaraTaxes73 APIs63.6FullEnrichB2B DataContact EnrichmentEmail FinderPhone Finder6 APIs62.7SlackBotsChatCollaborationMessaging115 APIs62.3Syft DataCompanyLead IntelligenceIntent DataWebsite Visitor Identification3 APIs60.7CoreLogic (Cotality)Climate RiskCoreLogicCotalityDirect Web API27 APIs60.0
Developing 15 Usable, with meaningful gaps to close
Bright DataWeb DataWeb ScrapingProxyResidential Proxy17 APIs53.6Freight WavesCompanyFreightLogisticsSupply Chain3 APIs52.7SmartyAddress VerificationGeocodingAddress AutocompleteZIP Code6 APIs50.4AlgorandBlockchainCryptocurrencyProof of StakeDeFi19 APIs50.3ATTOMReal-EstateProperty DataProperty IntelligenceMortgage18 APIs50.1NALACompanyFintechPaymentsRemittances5 APIs49.9mlsgrid7 APIs49.6NASA NeoWsNASAAsteroidsNear Earth ObjectsSpace3 APIs48.6NoyoCompanyHealthcareInsuranceEmployee Benefits64 APIs44.1PlivoCommunicationsCPaaSVoiceSMS24 APIs44.0DreamFactoryAutomationDeploymentDocumentationGeneration16 APIs42.7CarsXEAutomotiveVehiclesVINVehicle Data15 APIs42.0_doneDeveloper ToolsUtility APIsAI Agentsagent-native27 APIs41.0VerifonePaymentsPoint-of-SaleTerminal ManagementE-Commerce27 APIs40.9NominatimGeocodingOpenStreetMapMapsLocation Services7 APIs39.7
Thin 20 Limited public surface area
PlacekeyLocationGeocodingAddress MatchingIdentifiers2 APIs38.6HERELocationMappingMapsSpatial7 APIs38.0TivoEntertainmentMetadataTelevisionMovies3 APIs37.5SAP AribaB2BContract ManagementProcurementSourcing78 APIs37.4Telnyx Verify APINumber VerificationPhone VerificationOTP2FA3 APIs36.7TheSportsDBSportsSports DataTeamPlayers7 APIs35.6PreludeNumber VerificationPhone VerificationOTPAuthentication4 APIs35.2PayFastPaymentsPayment GatewaySouth AfricaSubscription13 APIs35.0RevelatorMusicDistributionRightsRoyalties8 APIs34.9CandidCharitiesDonationsNon-ProfitPhilanthropy9 APIs33.0messagebird19 APIs32.7TheSportsDBSportsDatabaseFreeOpen Data5 APIs32.6MatrixMessagingDecentralizedFederatedOpen Standard20 APIs31.3PrestmitBillsCryptoFintechGift Cards7 APIs31.1EquinixFortune 1000Data CentersInterconnectionColocation74 APIs30.5HashiCorp VaultEncryptionIdentityInfrastructureSecrets Management28 APIs30.0CieloPaymentsAcquiringFintechBrazil13 APIs29.2TheCocktailDBCocktailsDrinksRecipesFood and Beverage5 APIs28.2MonoOpen BankingFinancial DataPaymentsFintech6 APIs26.4Open LibraryAuthorsBooksCatalogCovers19 APIs26.3
Emerging 5 Early or largely undocumented
AribaB2BCatalog ManagementComplianceContracts80 APIs26.1TheMealDBRecipesMealsFoodCooking4 APIs25.0AcoustIDAudioFingerprintingMusicMusicBrainz1 API22.6Free Cocktail APIBeveragesCocktailsDrinksIngredients5 APIs21.6Department of Housing and Urban DevelopmentAffordable HousingFair Market RentsFederal-GovernmentFHA4 APIs15.7

APIs with this tag (47)

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
ZoomInfo Lookup APIThis folder contains a series of lookup endpoints.80.8Wappalyzer Lookup APIWebsite technology lookup and asynchronous crawl callbacks.70.9Wappalyzer Public APIThe provider-published OpenAPI 3.1 contract for every documented public REST endpoint — credit balance, tec...70.9
Strong 5 Solid coverage with minor gaps
Avalara Lookup APILook up service and transaction type information63.6FullEnrich Lookup APILook up a single best-matching person or company from deterministic identifiers — professional network URL ...62.7Slack Lookup APIThe Lookup API from Slack — 1 operation(s) for lookup.62.3Syft Data Lookup APIThe Lookup API from Syft Data — 1 operation(s) for lookup.60.7CoreLogic (Cotality) Lookup APIEnumerated lookup values used across resources.60.0
Developing 15 Usable, with meaningful gaps to close
Bright Data Lookup APIThe Lookup API from Bright Data — 6 operation(s) for lookup.53.6Freight Waves Lookup APIFree reference lookups for valid indexes, qualifiers, levels, lanes, and zip3.52.7Smarty Lookup APIThe Lookup API from Smarty — 3 operation(s) for lookup.50.4Algorand lookup APIThe lookup API from Algorand — 14 operation(s) for lookup.50.3ATTOM Lookup APILookup of state, county, CBSA, and geoID metadata.50.1NALA Lookup APIThe Lookup API from NALA — 1 operation(s) for lookup.49.9mlsgrid Lookup APIEnumerated lookup values per originating MLS.49.6NASA NeoWs Lookup APIThe Lookup API from NASA NeoWs — 1 operation(s) for lookup.48.6Noyo Lookup APIThe Lookup API from Noyo — 6 operation(s) for lookup.44.1Plivo Lookup APIThe Plivo Lookup API validates phone numbers and returns formatting, country, line type, carrier, and reach...44.0DreamFactory Lookup APILookup key management42.7CarsXE Vehicle Plate Decoder APIDecodes vehicle information from a license plate plus state/province, returning make, model, year, and VIN ...42.0ASN LookupLook up the network operator, country, and address block behind any IP address or ASN number. Given an inte...41.0Verifone Lookup APIThe Lookup API from Verifone — 1 operation(s) for lookup.40.9Nominatim Lookup APILook up address details for OSM objects by their OSM ID.39.7
Thin 19 Limited public surface area
Placekey Lookup APIThe Lookup API from Placekey — 1 operation(s) for lookup.38.6HERE Lookup APIThe Lookup API from HERE — 1 operation(s) for lookup.38.0Tivo Lookup APILook up content by known identifiers37.5SAP Ariba Content Lookup APISearches and retrieves content across the SAP Ariba platform.37.4TheSportsDB Lookup APIThe Lookup API from TheSportsDB — 5 operation(s) for lookup.35.6Prelude Lookup APIPhone number intelligence - line type, carrier, and flags.35.2PayFast Credit Card Transactions APIQuery individual credit card transaction details35.0Revelator Lookup APICommon reference/lookup data.34.9Candid Lookup APIOperations for retrieving lookup values and filter metadata.33.0messagebird Lookup APIOperations for looking up and validating phone numbers.32.7TheSportsDB Lookup APILook up detailed data by ID.32.6Matrix Identity Service APIAPI for looking up Matrix user IDs from third-party identifiers such as email addresses and phone numbers v...31.3Prestmit Lookup APIReference data for banks, gift card categories, and payout methods.31.1Equinix Lookup APILookup30.5HashiCorp Vault Lookup APIIdentity lookup operations30.0Cielo BIN Query APIThe Cielo BIN Query service returns metadata for a card BIN (Bank Identification Number) — issuing brand, c...29.2TheCocktailDB Lookup APIRetrieve details by ID28.2Mono Lookup APIIdentity and data verification for KYC/KYB.26.4Open Library Read APILegacy partner API that returns availability and read URLs for books matched by ISBN, OCLC, LCCN, or OLID i...26.3
Emerging 5 Early or largely undocumented
Content Lookup APILooks up content data and references within SAP Ariba for integration and validation purposes.26.1TheMealDB Lookup APIRetrieve details by ID or random meal25.0AcoustID Web Service APIREST API for audio fingerprint lookup and submission. Accepts Chromaprint-generated fingerprints and return...22.6Free Cocktail API Lookup APILook up full details by ID.21.6FHA Mortgage LimitsThe FHA Mortgage Limits service lets users look up the FHA or Government-Sponsored Enterprise (GSE) mortgag...15.7

Score breakdown

Frequency
55.1
log-scaled weighted occurrences
Breadth
1.3
spread across providers
Quality lift
49.6
mean composite of providers using it
Cohesion
1.9
strength of nearest seed neighbor

Related tags

Verify 5 co-occurrences List 9 co-occurrences Search 14 co-occurrences Transaction 8 co-occurrences Reporting 5 co-occurrences Data 5 co-occurrences Metadata 5 co-occurrences Compliance 7 co-occurrences

Where this tag comes from

Api tag46
Provider tag1
Openapi tag36
Openapi op tag128

Cohort brief

Auto-generated

The 47 providers in the APIs.io catalog tagged Lookup, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
47
all scored
Mean Kin Score
41.1
+20.4 vs catalog 20.7
Mean Agent Readiness
26.3
+16.6 vs catalog 9.7
Spread
15.7–80.8
median 38 · σ 13.7
How the 47 split by band
Exemplar 2Strong 5Developing 15Thin 20Emerging 5Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 54.1 17.5 +36.6 47
Access Clarity 41.7 22.3 +19.4 47
Developer Ergonomics 34.6 17.9 +16.7 47
Operational Transparency 26.3 11.3 +15 47
Discoverability 71.8 60.4 +11.4 47
Contract Governance 14.8 6.4 +8.4 47

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
ArtifactThis cohortCatalogDifference
MCP server (any) 23% 16% +7
MCP server (first-party) 15% 7% +8
Agent Skills 0% 0% 0
OAuth scopes 19% 9% +10
Security 100% 88% +12
Arazzo workflows 9% 2% +7
Governance rules 51% 13% +38

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. 1 ZoomInfo 80.8
  2. 2 Wappalyzer 70.9
  3. 3 Avalara 63.6
  4. 4 FullEnrich 62.7
  5. 5 Slack 62.3
  6. 6 Syft Data 60.7
  7. 7 CoreLogic (Cotality) 60
  8. 8 Bright Data 53.6
  9. 9 Freight Waves 52.7
  10. 10 Smarty 50.4
Top by Agent Readiness
  1. 1 FullEnrich 61.3
  2. 2 Syft Data 53.8
  3. 3 Wappalyzer 52.2
  4. 4 Freight Waves 50.9
  5. 5 ZoomInfo 49.5
  6. 6 Avalara 46.9
  7. 7 NALA 38.2
  8. 8 Verifone 36.3
  9. 9 SAP Ariba 33.9
  10. 10 Equinix 32.7
All 47 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 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

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MCP server

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Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • 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/lookup"
All tags 
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As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/lookup"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/lookup/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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