emerging · 0.0 market industry

Identifiers

Score 22.9 / 100 5 providers +47 via APIs 59 APIs Search apis.io →
Variants seen in the corpus: Identifiersidentifiers

Providers using this tag (5)

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

Developing 2 Usable, with meaningful gaps to close
MusicBrainzMusicMetadataEncyclopediaOpen Data16 APIs47.7PlacekeyLocationGeocodingAddress Matching1 API39.6
Thin 2 Limited public surface area
RORResearchOrganizationRegistry1 API34.0CrossrefCitationsDOIFunders1 API31.6
Emerging 1 Early or largely undocumented
GS1LogisticsSupply ChainBelgiumStandards1 API23.4

APIs with this tag (59)

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 5 Complete, well-documented, and agent-ready
Shopify Identifiers APIThe Identifiers API from Shopify — 75 operation(s) for identifiers.90.2Salesforce Identifiers APIThe Identifiers API from Salesforce — 6 operation(s) for identifiers.87.5Stripe Identifiers APIThe Identifiers API from Stripe — 15 operation(s) for identifiers.79.7Optimizely Identifiers APIThe Identifiers API from Optimizely — 3 operation(s) for identifiers.77.4Factset Identifiers APIThe Identifiers API from Factset — 2 operation(s) for identifiers.67.7
Strong 7 Solid coverage with minor gaps
Zaius Identifiers APIThe Identifiers API from Zaius — 3 operation(s) for identifiers.59.5Factiva Code APIEnables retrieval of codes necessary to search for companies, currencies, exchanges, locations, industries,...59.3University of Twente Library Crossref MembershipThe University Library registers DOIs with Crossref in the university's own name. Crossref member 2372, "Un...59.1Crossref membership — University of MacauThe University of Macau is Crossref member 53643, with DOI prefix 10.64219 and 21 DOIs registered as of 202...56.3ROR identifier — University of MacauResearch Organization Registry identifier for the University of Macau, carrying its English, Portuguese and...56.3University of Wisconsin-Madison Identifiers APIThe identifiers API from University of Wisconsin-Madison — 1 operation(s) for identifiers.56.0pVerify MBI Lookup APILook up a Medicare Beneficiary Identifier for a patient from demographic data, for providers who need the M...55.4
Developing 17 Usable, with meaningful gaps to close
Stanford University Identifiers APIIdentifier operations54.1PermID Entity Search APIRESTful API for searching and discovering organizations, equity instruments, and equity quotes using PermID...51.8PermID Record Matching APIRESTful API for matching unstructured entity records to PermID identifiers. Enables concordance by mapping ...51.8Symbology APIDiscovery Symbology API for concordance, navigation, and discovery of financial content. Enables mapping fr...51.8ROR organisation registrationUNIL's entry in the Research Organization Registry, https://ror.org/019whta54, established 1537, domain uni...49.7MusicBrainz Identifiers APINon-MBID lookups by ISRC, ISWC, and DiscID.47.7ROR registration (01zkghx44)Georgia Institute of Technology is registered in the Research Organization Registry as https://ror.org/01zk...46.8Emory University in the Research Organization Registry (ROR)Emory University is registered in ROR, the open registry of research organization identifiers, under ROR ID...43.3ROR registrationThe institution's entry in the Research Organization Registry, ROR ID 01nffqt88, carrying its canonical nam...42.9ROR RegistrationTexas A&M University is registered in the Research Organization Registry as https://ror.org/01f5ytq51, with...42.7ROR registrationGhent University is registered in the Research Organization Registry as https://ror.org/00cv9y106, distinct...42.6Asset Identifier Service (AIS)The USGS Asset Identifier Service (AIS) allows USGS personnel to reserve, register, publish, and manage USG...42.0B3 ISIN APIISIN issuance and management for financial instruments - B3 is the Brazilian numbering agency - covering IS...42.0Gracenote GN IDS APIThe GN IDS API is the only write surface Gracenote publishes. It lets content providers create, retrieve, u...42.0Research Organization Registry membershipIIT Kharagpur is registered in ROR as https://ror.org/03w5sq511, "Indian Institute of Technology Kharagpur"...41.9PMC ID Converter APIThe PMC ID Converter API translates between PubMed Central identifiers (PMCID), PubMed identifiers (PMID), ...41.6Corbado Identifiers APIManage login identifiers (email, phone, username) attached to a user.40.4
Thin 18 Limited public surface area
Crossref Open Funder Registry entry — Indian Institute of ScienceIISc holds Crossref Open Funder Registry id 100007780. Verified 2026-09-01 — https://api.crossref.org/funde...37.9ROR registration — Indian Institute of ScienceIISc is registered in the Research Organization Registry as https://ror.org/04dese585. Verified 2026-09-01 ...37.9ROR registration — Nagoya UniversityNagoya University is registered in the Research Organization Registry as ROR ID https://ror.org/04chrp450, ...36.7STRING Identifiers APIMap protein names and synonyms to STRING identifiers35.9Crossref Membership (member 6347)The University of Waikato is a Crossref member — member id 6347, primary name "University of Waikato", DOI ...35.5ROR Registration (ror.org/013fsnh78)The University of Waikato is registered in the Research Organization Registry as https://ror.org/013fsnh78,...35.5ROR RegistrationKhalifa University of Science and Technology is registered in the Research Organization Registry as https:/...34.8Terrain Discovery Environment API Identifiers APIPermanent identifier (DOI) requests34.4ROR REST APIThe ROR REST API provides programmatic access to the Research Organization Registry, enabling users to retr...34.0Healthcare Identifiers (HI) ServiceThe national Healthcare Identifiers Service, providing unique identifiers for individuals (IHI), healthcare...33.9Nanjing University in the Crossref Open Funder RegistryNanjing University's entry in the Crossref Open Funder Registry as funder 501100008048, with 3,401 works re...32.6Nanjing University in the Research Organization Registry (ROR)Nanjing University's registration in ROR, the open registry of research organizations: ROR ID 01rxvg760, do...32.6Crossref DOI registration (institute-level memberships)Hanyang registers DOIs through Crossref at the research-institute level rather than centrally. Members and ...31.4ROR registrationResearch Organization Registry identifier for Hanyang University, the stable machine-readable identity othe...31.4Otreeba Identifiers APIThe Identifiers API from Otreeba — 1 operation(s) for identifiers.28.8Crossref Funder Registry entry (501100018692)ENS de Lyon is registered in the Crossref Open Funder Registry as https://doi.org/10.13039/501100018692, na...28.6ROR registry record (04zmssz18)ENS de Lyon's record in the Research Organization Registry, https://ror.org/04zmssz18, typed education and ...28.6ID Mapping REST APIMaps identifiers between UniProt accessions and over 150 external database identifiers (e.g., RefSeq, Ensem...26.2
Emerging 12 Early or largely undocumented
Medrio Subjects APICreate, list, and update clinical trial subjects within a study; manage Medrio and study subject identifier...25.6ROR registration — Universitat de Barcelona (021018s57)The University of Barcelona's entry in the Research Organization Registry. ROR id https://ror.org/021018s57...24.4Reactome identifiers APIQueries for multiple identifiers24.3ROR Registration — Harbin Institute of TechnologyHIT is registered in the Research Organization Registry with ROR ID 01yqg2h08, carrying the names Harbin In...23.9Lane API Identifiers APIThe Identifiers API from Lane API — 3 operation(s) for identifiers.23.8GS1 Digital Link Resolver (id.gs1.org)GS1 AISBL's own live, unauthenticated GS1-Conformant Resolver, implementing the GS1-Conformant Resolver Sta...23.4Open Civic DataOpen Civic Data is a community-maintained set of specifications and shared identifiers for civic informatio...23.4Crossref Member 5618 — Department of MathematicsCrossref membership held at department level, not institution level. Member 5618, "Department of Mathematic...23.2ROR Registry RecordResearch Organization Registry record https://ror.org/02e16g702, types education and funder, established 18...23.2SpruceID Identifiers APIDID resolution implementing the W3C DID Resolution HTTP binding.21.3Sonyflake Distributed ID GeneratorSonyflake is a Go library producing 63-bit unique IDs inspired by Twitter's Snowflake but tuned for longer ...18.8ROR organization record (01b8kcc49)NCKU's Research Organization Registry record — ror.org/01b8kcc49, established 1931, status active, declared...16.1

Companies reaching this through an API (47)

These companies publish an API, specification or operation carrying “Identifiers” 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.

Australian Digital Health Agency B3 (Brasil Bolsa Balcão) Corbado Emory University Factiva Factset Georgia Institute of Technology Ghent University Gracenote Hanyang University Harbin Institute of Technology Hokkaido University Indian Institute of Science Bangalore Indian Institute of Technology Kharagpur Khalifa University Lane API Medrio Nagoya University Nanjing University National Center for Biotechnology Information (NCBI) National Cheng Kung University Optimizely Otreeba Politecnico di Milano Public Sector pVerify Reactome Refinitiv Eikon Salesforce Shopify Sony SpruceID Stanford University STRING Stripe Terrain Discovery Environment API Texas A&M University U.S. Geological Survey UniProt University of Barcelona University of Lausanne University of Macau University of Twente University of Waikato University of Wisconsin-Madison Zaius École Normale Supérieure de Lyon

Score breakdown

Frequency
54.2
log-scaled weighted occurrences
Breadth
0.1
spread across providers
Quality lift
40.0
mean composite of providers using it
Cohesion
8.5
strength of nearest seed neighbor

Related tags

ROR 18 co-occurrences Registry 19 co-occurrences Course Catalog 13 co-occurrences Research Repository 17 co-occurrences DOI 12 co-occurrences Shibboleth 17 co-occurrences University 22 co-occurrences Scholarly 5 co-occurrences

Where this tag comes from

Api tag59
Provider tag5
Openapi tag16
Openapi op tag103

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  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
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  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
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This tag 
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As a scored cohort 
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The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/identifiers/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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