Metadata
Variants seen in the corpus:
$MetadataMETADATAMeta DataMetadatametadata
Providers using this tag (462)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 20 Complete, well-documented, and agent-ready
Strong 38 Solid coverage with minor gaps
PropelAuthGitLabServiceNowAffindaYoastPostmanApollo.ioLanding.aiConfluenceAdobe Experience CloudVendastaMediaValetDelft University of TechnologyGitHubCloudflareFactivaBarchartUnified.toAutodeskBynderTemple HealthIntuitDatabricksOne CodexDatabentoBridgeThoughtSpotUniversity of Michigan-Ann ArborHildebrandSocketALTRTVmazeAzure MonitorLogin.govToastASAPPPicsartNetlify
Developing 134 Usable, with meaningful gaps to close
AuthenticxFrame.ioHasuraUS Census BureauEPA — U.S. Environmental Protection AgencyInspectoriodbtOraclePicsArt (Socialin)OnshapeSweepGenabilityMonetateOrigami RiskThe Movie DatabaseLondon Stock Exchange GroupSalesforce AutomationNHS EnglandSalesforce Sales CloudCaptivateIQPendo.ioCodesphereUniversity of New South WalesWorkSpanStanford UniversitySAP BI ToolsSkeduloUnlock ProtocolSalesforce Experience CloudmlsgridSun LifeUniversity of Illinois Urbana-ChampaignINRIXUniversity of British ColumbiaToriiDataHubRestaurant365Australian National UniversityCollateOMDbAdobe LightroomAmazon RedshiftHelp ScoutZenodoMicrosoftOracle DatabaseUniversity of Manchesterdata.worldUniversity of TokyoSAP HANAGoogle WorkspaceBlizzard EntertainmentCloudinarySelect StarYouSignUniversity of EdinburghTableauHatchetSocketNationGraphGremlinRegridCoveoGutendexHappyOrNotRelativityForethoughtLettaPowerSchoolInfinidatIMDb-APIEnsoPackagistGoogle Cloud Data CatalogUniversity of AmsterdamDelineaSiffletUniversity of Hong KongMusicBrainzKalturaLanceDBSiemens PLMWorldCatAlteryxCMS — Centers for Medicare & Medicaid ServicesNASA CMRAutoCADEigenpalIEEE XploreSnapAPILooksRareDevtronWidenDiscGolfAPIYrISBNdbSalesforce FlowSpring FrameworkPrometheusLoughborough UniversityAutodesk FusionCMS Blue Button 2.0Orion HealthPeking UniversityUniversity of CanterburyErasmus University RotterdamNHS DigitalturbopufferDataCiteMicrosoft Power PlatformUniversity of OxfordHamad Bin Khalifa UniversityUniversity of AucklandUniversity of RochesterAcuantDaprOpenMetadataTickittoMacquarie UniversityOxenSAP Commerce CloudCCH TagetikMobulaOpenShiftNOAA — National Oceanic and Atmospheric AdministrationBackstageFrankfurterNational University of SingaporeDaring FoodsThe Bureau of Economic AnalysisiconikStockholm UniversityCoactiveUniversity of Warsaw
Thin 163 Limited public surface area
Rackspace TechnologySAP Business IntelligenceGotham GreensCastorPrecisely APIsTableau DesktopTaylor's UniversitySeldonCresilonRWTH Aachen UniversityPowerShellFINRAWorkableDeakin UniversityPolymarketLiberty GlobalPhysnaPokémon TCG APISoundchartsOptimismPlanet LabsToastRasgoThe Open Movie DatabaseScalable Inference ServingTivoACRCloudÉcole Normale Supérieure de ParisDigital Public Library of AmericaVarian Medical SystemsPrometheusUniversity of BaselTwentyUtrecht UniversityPerchwellLeverSpringer NatureWorld Meteorological OrganizationCity University of Hong KongSecodaSimplecastUniversity of BathAarhus UniversityNHS APIChalmers University of TechnologyCoconutLund UniversityConductor OSSNASAUppsala UniversityTheGamesDBRAWGRipplingGitLab CI/CDParaSwapEurostatJupiterPhraseanetZoraDepartment of EnergyFivetranKing's College LondonUniversity of ViennaUnited States National Library of MedicineUniversity of California, BerkeleyVrije Universiteit AmsterdamAtlanUniversity of PennsylvaniaCornell UniversityInvendorCharles UniversityNutrical Solution LtdSnapAPIWarner Bros. DiscoveryKubeflow PipelinesEindhoven University of TechnologyThanosUniversity of ZurichWestern PowerUniversity College DublinAmiibo APIJupiterMichigan State UniversityPolkadotGlassnodeTerrain Discovery Environment APIUniversity of GroningenUniversity of PaduaLondon School of Economics and Political ScienceVineyardPurdue UniversityUniversity of GenevaCandidEclipse FoundationGeorgia Institute of TechnologyClimate EngineIncusKubeflowBurger SinghFatcatTwentyCiQueen's University BelfastACM Digital LibraryWorld BankCrossrefUniversity of GöttingenSSOUniversity of St AndrewsAmeriCorpsTU DresdenPubMedSingularityNETTaddyUnited States Department of AgricultureUniversity of TorontoLa Trobe University1inchBureau of Transportation StatisticsVictoria University of WellingtonSpring FrameworkCruz FoamEnvisicsApache TikaEnergyXAnaplanApicurioIndian Institute of Science BangaloreUniversity of Cape TownAccelsiusJokeAPICaskIndian Institute of Technology KanpurMaastricht UniversityFAO FAOSTATFabric OriginNational Yang Ming Chiao Tung UniversitySAMLUCLouvainOracle Database 19cPromethiumApache AtlasCalifornia Institute of TechnologyPendoOryCDataTaylor & Francis1inchODataProject Gutenbergconda-forgeUniversity of SydneyBattle.netOpenClinicaDenodoRevertMemberfulNOAA ERDDAPOpenCitationsPennsylvania State UniversityUS Geological SurveyUniversity of ChilelakeFSSimpleHash
Emerging 104 Early or largely undocumented
The Update Framework (TUF)Université de MontréalNetflix ConductorLexionBigchaindbKyushu UniversityIndian Institute of Technology BombayVertaOracle NetSuiteCopernicus MarineCrystal ReportsAgentic Resource Discovery (ARD)National Energy System OperatorNational Archives and Records AdministrationNational Archives and Records Administration (NARA)OlympusDAOCallMinerUniversiti Putra MalaysiaUniversiti Teknologi MalaysiaTechnical University of DarmstadtVeeva SystemsAmerican University of BeirutTechnical University of BerlinUniversity of ExeterUniversity of GlasgowSAP BWKeio UniversityNagoya UniversityIndian Institute of Technology DelhiRice UniversityWaseda UniversityFederal Emergency Management AgencyTrinity College DublinUniversity of OtagoHabiteoLane APIUniversity of BarcelonaAutonomous University of MadridEriduLens ProtocolUniversiti Teknologi PETRONASTokyo Institute of TechnologyUniversität HamburgPolitecnico di MilanoUniversity of SouthamptonUniversity of Texas at AustinFast Healthcare Interoperability ResourcesTU WienOrange LogicCitation File FormatUniversity of AberdeenComplutense University of MadridSorbonne UniversityUniversity of MinnesotaKarlsruhe Institute of TechnologyOhio State UniversityUniversity of BernUniversity of HelsinkiYummlyUniversity of NottinghamUniversity of OttawaUniversity of ReadingUniversity of TübingenUniversity of TwenteGriffith UniversityÉcole Normale Supérieure de LyonArbor BiotechnologiesUniversiti Sains MalaysiaUniversity of AntwerpUniversity of IndonesiaGadjah Mada UniversityLeiden UniversityQatar UniversityTohoku UniversityUniversity of LisbonUniversity of LiverpoolJavaBritish Columbia Data CatalogueGhent UniversityTel Aviv UniversityUniversity of FloridaUniversity of LeedsÉcole des Ponts ParisTechLF AI and DataMcMaster UniversityUniversity of WollongongPohang University of Science and TechnologyUniversity of Los Andes ColombiaUniversity of NavarraMedia ChainAmazon Web ServicesBoston UniversityCurtin UniversitySapienza University of RomeUniversity of CopenhagenUniversity of GothenburgNorgate DataAutonomous University of BarcelonaAlzheonWhip Media GroupComcastPodchaserCollibraPublic Sector
Minimal 3 Almost no public developer surface
APIs with this tag (499)
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 20 Complete, well-documented, and agent-ready
CMS Beneficiary Claims Data API (BCDA)Enables Medicare Accountable Care Organizations (ACOs) and alternative payment model participants to retrie...Salesforce Metadata APIThe Salesforce Metadata API is a SOAP-based API that enables developers to retrieve, deploy, create, update...Mailchimp Metadata APIManage custom metadata fields that can be attached to messages for tracking and filtering.ZoomInfo Platform APIGTM data-model metadata and records — list entities, introspect their fields and upsert records; upsert, re...Adobe Campaign Metadata APIDiscover resource schemas, fields, filters, and data policies for Campaign Standard resources.Didomi metadata APIA metadata serviceThanx Metadata APILook up merchants, locations, and scopes.Outbrain Amplify APIThe complete Outbrain Amplify API surface — 77 operations across marketers, budgets, campaigns, promoted li...Iterable Metadata APIStore and retrieve key-value metadata tables for use in personalization and campaign logic.Dynatrace Custom Tags APIThe Dynatrace Custom Tags API allows you to manage custom tags on monitored entities within a Dynatrace env...Jefferson Health Metadata APIFHIR conformance discovery.Wappalyzer Metadata APIThe four anonymous, unauthenticated technology and category reference endpoints on the v2 host — the techno...Canvas Medical Metadata APIFHIR server capabilitiesOntraport Metadata APIObject metadata and field information.Uphold Metadata APIMetadata.Google Analytics metadata APIThe metadata API from Google Analytics — 1 operation(s) for metadata.Solo.io Metadata APIInternal credential metadata endpointsPlaid Institutions APIPlaid's Institutions is part of the Plaid open-finance platform, exposing 3 documented endpoint(s) under th...Matomo API APIThe Matomo API API exposes 17 operations of the Matomo Reporting API (module `API`). Matomo core meta-API: ...Oracle Siebel Metadata APIDiscovery endpoints that return OpenAPI-compatible metadata describing available resources, fields, and ope...
Strong 45 Solid coverage with minor gaps
PropelAuth Metadata APIAuthorization server metadata discoveryGitLab Metadata APIThe Metadata API from GitLab — 1 operation(s) for metadata.ServiceNow CMDB Meta APIThe ServiceNow CMDB Meta API provides REST endpoints for retrieving metadata about CMDB classes, including ...Affinda Tags APITag management for parsed documents. Tags can be arbitrarily attached to documents to support routing, segm...Yoast Metadata APIThe Yoast Metadata API provides a PHP interface to add, alter, or remove metadata in the of a WordPress do...Yoast Surfaces APIThe Yoast Surfaces API provides a PHP interface for retrieving SEO metadata programmatically within WordPre...Postman Tags APIThe Tags API manages tags applied to APIs, collections, and workspaces for organization, governance reporti...Apollo.io Fields APIField and custom-field definitions across contacts, accounts and opportunities. 4 operation(s) from the pub...Landing.ai Metadata APIThe Metadata API from Landing.ai — 2 operation(s) for metadata.Confluence Content Properties APIStore and retrieve custom data against Confluence content.Confluence Label Info APIRetrieve information about labels used across Confluence content.Confluence User Properties APIStore and retrieve custom properties associated with Confluence users.Confluence V2 Content Properties APIStore and manage custom properties on content using the Confluence Cloud REST API v2.Confluence V2 Space Properties APIStore and retrieve custom properties on Confluence spaces using the v2 API.Adobe Experience Cloud Metadata APIOperations for retrieving resource metadataVendasta Data Glossary APIThe Data Glossary context: glossary contexts and glossary terms, the vocabulary layer that explains what si...GitHub Meta APIUse the REST API to get meta information about GitHub, including the IP addresses of GitHub services.Cloudflare Metadata APIRead metadata associated with keys.Factiva DJID Taxonomy APIExplores the taxonomy of the Factiva databases using Dow Jones Intelligent Identifiers (DJID). Provides acc...Barchart OnDemand APIsBarchart OnDemand APIs from Barchart — 71 path(s) described in OpenAPI.Unified.to metadata APIThe metadata API from Unified.to — 2 operation(s) for metadata.Autodesk Metadata APIThe Metadata API from Autodesk — 8 operation(s) for metadata.Bynder Access Rights and Optiops APIThe combined access-rights and metaproperty-options surface, covering metaproperty access control alongside...Bynder Metaproperty Operations APIMetaproperty definitions — the custom metadata fields a portal defines. Create, retrieve, modify and delete...Bynder Metaproperty Options APIMetaproperty options and their dependency graph: create and manage the selectable values on a metaproperty,...Bynder Product Layer Metaproperties APIProduct layer metaproperties — the product-information metadata layer Bynder maintains alongside the asset-...Bynder Taxonomy APIThe taxonomy service exposes metaproperties and their options on the /api/1 surface with RFC 4122 UUIDs, in...Temple Health Metadata APIFHIR conformance and SMART configuration discovery.QuickBooks Custom Fields APIThe QuickBooks Custom Fields API is a premium API that provides programmatic access to custom field definit...Databricks Catalogs APIThe Databricks Catalogs API is part of Unity Catalog and allows you to create, update, list, and delete cat...Databricks Metastores APIThe Databricks Metastores API is part of Unity Catalog and allows you to create, update, list, and delete m...One Codex Metadata APIThe Metadata API from One Codex — 2 operation(s) for metadata.Databento Metadata APIDiscovery and cost-estimation endpoints for the historical catalog. List publishers, datasets, schemas, and...Bridge Metadata APIService document and CSDL schema discoveryThoughtSpot Metadata APIThe Metadata API from ThoughtSpot — 16 operation(s) for metadata.Deep Blue Documents OAI-PMHLive OAI-PMH 2.0 metadata harvesting endpoint for Deep Blue Documents, the University of Michigan Library's...Glowmarkt Virtual Entity System APICRUD over Virtual Entities — the Glow Platform's model of a physical "thing" such as a home or a site, made...Socket metadata APIThe metadata API from Socket — 5 operation(s) for metadata.ALTR Metadata APIOperations related to the currently logged in users metadata and current organizations metadata.Azure Monitor Metadata APIOperations for retrieving Application Insights metadataLogin.gov Metadata APISAML 2.0 IdP metadata.Toast Metadata APIThe Metadata API from Toast — 1 operation(s) for metadata.ASAPP Metadata APIAPI to submit entity's attributes to ASAPPPicsart Metadata APIThe Metadata API from Picsart — 4 operation(s) for metadata.Netlify Metadata APIThe Metadata API from Netlify — 1 operation(s) for metadata.
Developing 134 Usable, with meaningful gaps to close
Authenticx Metadata APIThe Metadata API from Authenticx — 2 operation(s) for metadata.Frame.io Metadata APIManage Metadata and related operations.Hasura Metadata APIHasura metadata management.US Census Bureau Metadata APIPer-dataset variables, groups, geographies, and examplesEPA — U.S. Environmental Protection Agency Meta Data APIAPI availability, change history, field definitions, known issues.EPA — U.S. Environmental Protection Agency Metadata APIThe Metadata API from EPA — U.S. Environmental Protection Agency — 7 operation(s) for metadata.Inspectorio METADATA APIThe METADATA API from Inspectorio — 2 operation(s) for metadata.dbt Metadata APIThe Metadata API from dbt — 1 operation(s) for metadata.OCI Data Catalog APIREST APIs for managing a metadata catalog of data assets, enabling data discovery, governance, and understa...Oracle Metadata APIThe metadata API from Oracle — 3 operation(s) for metadata.PicsArt (Socialin) Metadata APIThe Metadata API from PicsArt (Socialin) — 4 operation(s) for metadata.Onshape Metadata APIAccess and modify metadata.Sweep APISweep's public REST API — the contract behind the Sweep agentic workspace. 698 operations across 591 paths ...Sweep MCP ServerSweep's official hosted Model Context Protocol server — a remote SSE endpoint at https://sweepmcp.com/sse t...Genability Signal Property and Lookup APIList and retrieve property keys — the typed inputs a tariff calculation accepts — along with their permitte...Monetate Metadata APIRead-only API returning metadata about a Monetate account so that experience, page-event and custom-target ...Origami Risk Public APIThe core Origami Risk platform API — generic domain and entity CRUD (get, upsert, bulk insert, bulk upsert,...TMDB APIThe full TMDB REST API surface (v3). Covers movies, TV series, seasons, episodes, people, credits, images, ...LSEG World-Check One API Info APIRetrieve information about the public API, including the current API version.Salesforce Metadata APIAPI for managing customizations and building tools for application lifecycle management.Booking and Referral Standard (BaRS) - FHIR APISends booking and referral information between NHS service providers using the Booking and Referral Standar...Metadata APIAPI for retrieving, deploying, creating, updating, or deleting customization information such as custom obj...CaptivateIQ Metadata APIThe Metadata API from CaptivateIQ — 1 operation(s) for metadata.Pendo.io Metadata APIThe Metadata API from Pendo.io — 9 operation(s) for metadata.Codesphere metadata APIThe metadata API from Codesphere — 3 operation(s) for metadata.UNSWorks Repository OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for UNSWorks. Fully anonymous. All six verbs were exercised live a...UNSWorks Repository REST API (DSpace 7.0)UNSWorks is the UNSW open-access institutional repository, running DSpace 7.0 on UNSW infrastructure and ad...WorkSpan Metadata APIThe Metadata API from WorkSpan — 6 operation(s) for metadata.Stanford Libraries PURL APIPersistent URLs into the Stanford Digital Repository. GET /{druid} returns HTML, /{druid}.xml returns the c...SAP BI Tools Metadata APIProvider service endpoints for retrieving OData metadata documents describing the structure of models, dime...Skedulo Metadata APIThe Metadata API from Skedulo — 1 operation(s) for metadata.Unlock Protocol Metadata APIThe Metadata API from Unlock Protocol — 4 operation(s) for metadata.Metadata API (Experience Cloud)Deploy and retrieve Experience Cloud site configurations, navigation menus, and digital experience bundles....mlsgrid Metadata APIOData service and EDMX metadata.IDEALS OAI-PMHThe OAI-PMH 2.0 data provider for IDEALS, the Illinois Digital Environment for Access to Learning and Schol...INRIX Gateway Map Version APIReports the current INRIX map and XD network version in use, so consumers can align segment identifiers wit...Torii Metadata APIRetrieve field metadata for apps, users, and contracts.DataHub CLICommand line tool for interacting with DataHub. The datahub CLI allows you to perform common operations inc...DataHub GraphQL APIPrimary API for querying and mutating metadata in DataHub. The GraphQL API serves as the main public API fo...DataHub Java SDKJava client for interacting with DataHub. The io.acryl datahub-client package offers REST emitter APIs that...DataHub REST APIThe Rest.li API represents the underlying persistence layer and exposes the raw PDL models used in storage....Restaurant365 Metadata APIOData service metadataANU Open Research OAI-PMHOAI-PMH 2.0 metadata harvesting interface for ANU's Open Research institutional repository. Confirmed live:...Amazon Redshift Metadata APIList databases, schemas, and tables in a Redshift data warehouseHelp Scout Custom Fields APIRead custom field definitions on inboxes and read / update custom field values on conversations.Zenodo OAI-PMH APIOAI-PMH protocol endpointsMicrosoft Metadata APIEntity and attribute metadataOracle Database Metadata APICollection metadata and catalog operationsdata.world Metadata Management APICreate, search, update, and delete catalog resources by IRI. Manage tables, columns, relationships, collect...SAP HANA REST Info APIREST API for retrieving system information and metadata about SAP HANA Platform instances.Drive Labels APICreate and manage labels to organize and classify files in Google Drive.Blizzard Entertainment Metadata APIRetrieve Hearthstone metadata reference data.Cloudinary Admin APIThe Admin API supports bulk asset management (search, retrieval, update, delete, restore), and CRUD managem...Select Star metadata APIThe metadata API from Select Star — 5 operation(s) for metadata.YouSign Metadata APIExtra information attached to a Signature Request.Edinburgh DataShare OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for Edinburgh DataShare. Fully anonymous, no key, twelve metadata ...Tableau Metadata APIGraphQL-based API for querying metadata about Tableau content, data sources, and lineage information.Hatchet Metadata APIThe Metadata API from Hatchet — 3 operation(s) for metadata.Socket metadata APIThe metadata API from Socket — 5 operation(s) for metadata.NationGraph Metadata APIThe Metadata API from NationGraph — 1 operation(s) for metadata.Gremlin metadata APIGet metadata about the Gremlin commands.Regrid Metadata APICoverage, usage, and data quality endpointsCoveo Metadata APIThe Metadata API from Coveo — 2 operation(s) for metadata.HappyOrNot metadata APIMetadata related endpoints and daa definitionsRelativity Metadata APIThe Metadata API from Relativity — 1 operation(s) for metadata.Forethought Metadata APIInspect workspace-level Solve configuration.Letta Metadata APIService/runtime metadata.PowerSchool Metadata APISystem metadata and configurationInfiniBox REST API (InfiniAPI)The management REST API served by every InfiniBox and InfiniBox SSA array on its own management interface a...Enso metadata APIThe metadata API from Enso — 8 operation(s) for metadata.Packagist Metadata APIComposer v2 static metadata and change tracking.UvA Archives Collection Descriptions OAI-PMH (ArchivesSpace tenancy)OAI-PMH provider exposing EAD collection descriptions and inventories from the University of Amsterdam Libr...UvA Central Catalogue OAI-PMH (Ex Libris Alma tenancy)The harvesting endpoint the university library documents for its central catalogue — roughly 2.5 million bi...Delinea Metadata APIMetadataControllerHKU Scholars Hub OAI-PMHHKU Scholars Hub is the University's DSpace-based open-access institutional repository and current research...Kaltura metadata APIMetadata serviceLanceDB Metadata APIOperations that only interact with object metadata and should be computationally lightweightSiemens PLM Metadata APIThe Metadata API from Siemens PLM — 3 operation(s) for metadata.Alteryx Connect APIAPI for Alteryx Connect data catalog and collaboration platform.CMS — Centers for Medicare & Medicaid Services Metadata APIThe Metadata API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for metadata.CMR Ingest APIREST API for creating, updating, and deleting metadata records in the Common Metadata Repository. Supports ...AutoCAD Model Derivative APIAPI for translating AutoCAD design files into formats like SVF and SVF2 for rendering in the Viewer SDK, ex...Eigenpal Metadata APIAuthenticate and inspect the current API context.IEEE Xplore DOI APIBatch metadata lookup endpoint that accepts up to 25 DOI (Digital Object Identifier) numbers per request an...IEEE Xplore Metadata Search APIREST endpoint for querying and retrieving metadata records and abstracts for more than 6 million documents ...SnapAPI Metadata APIThe Metadata API from SnapAPI — 1 operation(s) for metadata.LooksRare Collections APIRetrieve collection-level data for NFT collections indexed on LooksRare. Endpoints return Collection object...LooksRare Tokens APIRetrieve NFT token metadata including token details, collection information, and token attributes for any t...Devtron Metadata APIApplication metadata and information retrievalWiden Metadata APIManage metadata fields and controlled vocabulary values.DiscGolfAPI Metadata APIDataset manifest and publication metadata.Yr metadata APIService metadata endpointsSalesforce Tooling API (Flow)Tooling API endpoints for managing Flow definitions and metadata. Supports deployment, retrieval, and manag...Spring Framework Metadata APIDiscover available project options and capabilitiesPrometheus Metadata APIEndpoints for querying label names, label values, series metadata, and metric metadata without executing Pr...Loughborough Research Repository OAI-PMHOAI-PMH metadata harvesting endpoint for the Loughborough Research Repository, served via figshare and scop...Autodesk Fusion Metadata APIThe Metadata API from Autodesk Fusion — 4 operation(s) for metadata.CMS Blue Button 2.0 Metadata APIFHIR capability statement.Orion Health Metadata APIServer capability and metadata operationsPKU Open Research Data Platform (OAI-PMH)OAI-PMH 2.0 metadata-harvesting endpoint for the Open Research Data Platform, verified responding to the Id...UC Research Repository DSpace REST APIDSpace 7 REST API backing the UC Research Repository, providing programmatic access to communities, collect...UC Research Repository OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the UC Research Repository, a DSpace 7 institutional reposito...RePub OAI-PMH Metadata FeedOAI-PMH 2.0 metadata harvesting interface for RePub, the Erasmus University institutional repository. Verif...Health Research Data Catalogue APIRetrieve metadata about NHS health datasets suitable for publication in health research catalogues. Enables...NHS Digital Metadata APIThe Metadata API from NHS Digital — 2 operation(s) for metadata.turbopuffer Namespaces APINamespace lifecycle and metadata endpoints — list namespaces, read schema / dimensions / row count, warm th...DataCite GraphQL APIAn alternative query interface for DOI metadata retrieval using the GraphQL query language. Currently suppo...Microsoft Power Platform Metadata APIThe Metadata API from Microsoft Power Platform — 3 operation(s) for metadata.Figshare OAI-PMH (Manara - HBKU Research)Figshare exposes an OAI-PMH v2.0 metadata harvesting endpoint that provides access to public article metada...University of Auckland Figshare OAI-PMH ServiceOAI-PMH metadata harvesting endpoint for the University of Auckland Figshare research repository. Supports ...UR Research Institutional Repository OAI-PMHThe legacy UR Research institutional repository exposes a live OAI-PMH interface for harvesting Dublin Core...Acuant Metadata APISupported document types, subscriptions, logsDapr Metadata APISidecar metadata operations.OpenMetadata Metadata APIThese APIs are for managing custom property definitions in OpenMetadata. Use these APIs to create custom pr...Tickitto Metadata APIThe Metadata API from Tickitto — 1 operation(s) for metadata.Macquarie University Research Data Repository (OAI-PMH)The Figshare-backed Research Data Repository exposes metadata for harvest via the OAI-PMH protocol through ...Oxen Metadata APIThe Metadata API from Oxen — 1 operation(s) for metadata.SAP Commerce Cloud Metadata APIOData service metadataCCH Tagetik Metadata APIThe Metadata API from CCH Tagetik — 1 operation(s) for metadata.Mobula Metadata APIAsset and token metadata.OpenShift Metadata APIAPI for managing metadata resources including ConfigMaps, Secrets, Events, Namespaces, and ServiceAccounts.CO-OPS Metadata API (MDAPI v1)The CO-OPS Metadata API exposes station inventory, harmonic constituents, NOS PORTS station lists, flood th...NOAA InPort Metadata CatalogInPort is the authoritative metadata repository for NOAA Fisheries and the National Ocean Service and the N...Backstage Metadata APIThe Metadata API from Backstage — 2 operation(s) for metadata.Frankfurter metadata APIAPI reference data like available currenciesScholarBank@NUS OAI-PMH InterfaceOAI-PMH 2.0 metadata harvesting endpoint for ScholarBank@NUS, advertising twelve metadata formats including...Daring Foods Discovery APIThe self-describing metadata layer - route index (222 routes across 10 namespaces), registered post types, ...Daring Foods Metadata APIPost types, taxonomies, statuses and authors.Daring Foods oEmbed APIPublic oEmbed 1.0 provider endpoint for daring.com URLs, returning embeddable rich metadata - title, author...Daring Foods SEO Metadata APIPublic Yoast SEO head endpoint returning the rendered SEO metadata and full schema.org JSON-LD graph for an...The Bureau of Economic Analysis Metadata APIMethods for discovering available datasets, parameters, and valid values.DiVA Institutional Repository (OAI-PMH)Stockholm University participates in DiVA (Academic Archive On-line), the shared Swedish publishing system ...iconik Metadata APICustom metadata fields, views, and values.Dane Badawcze UW OAI-PMH EndpointOAI-PMH 2.0 metadata harvesting endpoint for the University of Warsaw Research Data Repository (Dataverse)....
Thin 180 Limited public surface area
Rackspace Technology Metadata APIResource-level customer metadata.SAP Business Intelligence Metadata APIBrowse BW/4HANA metadata catalogGotham Greens Discovery APIPublic, unauthenticated site, content-type, taxonomy and status metadata — the self-describing route index ...Gotham Greens oEmbed APIPublic oEmbed 1.0 provider endpoint for gothamgreens.com URLs, returning embeddable rich metadata for Journ...Gotham Greens SEO Metadata APIPublic Yoast SEO head endpoint returning the rendered SEO/head metadata and its JSON-LD schema graph for an...Castor Metadata APIReference metadata such as countries.Precisely APIs Metadata APIThe Metadata API from Precisely APIs — 2 operation(s) for metadata.Tableau Metadata APIDiscover and query metadata about Tableau content using GraphQL, including workbooks, data sources, flows, ...Taylor's e-Repository OAI-PMHOAI-PMH 2.0 data provider for the DSpace CRIS e-Repository, advertising repository name "Taylor's Universit...Taylor's Library OAI-PMHOAI-PMH 2.0 data provider exposed by the Koha-powered Taylor's Library catalog for harvesting bibliographic...Seldon metadata APIThe metadata API from Seldon — 3 operation(s) for metadata.Cresilon Discovery APIPublic, unauthenticated site, content-type, taxonomy, status and author metadata — the self-describing rout...Cresilon oEmbed APIPublic oEmbed 1.0 provider endpoint for cresilon.com URLs, returning embeddable rich metadata for Cresilon ...Cresilon SEO Metadata APIPublic Yoast SEO head endpoint returning the rendered SEO/head metadata and its schema.org JSON-LD graph fo...RWTH Publications OAI-PMHRWTH Publications is the institutional repository providing access to the publication output of RWTH Aachen...PowerShell Metadata APIOData service metadata.FINRA Metadata APIThe Metadata API from FINRA — 1 operation(s) for metadata.Workable Custom Attributes APIDefine and read custom attributes attached to candidates, jobs, and requisitions for tenant-specific report...Deakin Research Online (DRO) OAI-PMHDeakin Research Online is the university's research repository, now hosted on the figshare platform. It exp...Polymarket Gamma APIRead-only metadata API for markets, events, tags, and categories - the surface that powers polymarket.com's...AppStore Metadata Service APIThe ASMS (AppStore Metadata Service) REST API from Liberty Global Technology Services BV — the MAS API in R...Physna Metadata APIThe Metadata API from Physna — 6 operation(s) for metadata.Pokémon TCG API Metadata APIThe controlled vocabularies used across cards - energy types, card subtypes, supertypes, and rarities.Planet Catalog APISTAC-based search and access layer over Planet imagery metadata, providing a standards-aligned interface to...Superchain RegistrySource-of-truth index of chains that are part of the Optimism Superchain — genesis files, deployment addres...Toast Metadata APIThe Metadata API from Toast — 1 operation(s) for metadata.Rasgo Metadata APITable metadata operationsScalable Inference Serving Metadata APIServer and model metadata endpointsTiVo Music Metadata APIThe TiVo Music Metadata API provides access to high-quality music information including artist details, alb...ACRCloud Metadata APILook up enriched third-party music metadata.HAL Search / REST APIThe national HAL open-archive REST and Search API provides programmatic query access to publication metadat...HAL-ENS Open Archive (OAI-PMH)HAL-ENS is the open archive hosting the scientific production of ENS Paris researchers, teacher-researchers...Varian Medical Systems Metadata APIFHIR server capability and metadataedoc OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the University of Basel edoc repository. The Identify verb re...Prometheus metadata APIRetrieve metric metadata such as type and unit.Twenty GraphQL APIAuto-generated GraphQL API over the same workspace schema, exposing queries, mutations, batch upserts via p...Utrecht University Repository OAI-PMHOAI-PMH metadata harvesting interface for the Utrecht University Library DSpace institutional repository, e...Perchwell Metadata APIOData service metadata.Lever Tags APIThe Tags API from Lever — 1 operation(s) for tags.OSCAR/Surface REST APIThe OSCAR/Surface REST API provides programmatic access to the WMO Observing Systems Capability Analysis an...Springer Nature Metadata APIThe legacy Metadata API provides metadata retrieval for Springer publications. Returns article and book met...CityUHK Scholars OAI-PMHPublic OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting, version 2.0) endpoint for CityUH...Simplecast Metadata APIAccount, categories, keywords, authors, and helper resources.Research Portal (Pure) OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the University of Bath Open Access Repository, served by the ...NHS API Metadata APIThe Metadata API from NHS API — 1 operation(s) for metadata.Pure OAI-PMH Metadata ServiceOAI-PMH metadata harvesting service for the Aarhus University Pure research portal, used to expose and harv...Chalmers Open Digital Repository (ODR) OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the Chalmers Open Digital Repository (ODR), which holds stude...Chalmers Research OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the Chalmers Research portal (research.chalmers.se), covering...Coconut Metadata APIRetrieve technical metadata for input and output files.Lund University Publications OAI-PMHOAI-PMH 2.0 metadata-harvesting endpoint for fully or partially harvesting Lund University publication meta...Lund University Publications unAPIunAPI 1 discovery service for retrieving alternate metadata formats of LUP records. No authentication requi...Lund University Research Portal (LUCRIS / Pure)Public external interface to the LUCRIS research information system, built on Elsevier Pure, covering resea...Conductor OSS Metadata APIThe Metadata API from Conductor OSS — 4 operation(s) for metadata.DiVA OAI-PMHDiVA (Academic Archive On-line) is Uppsala University Library's institutional repository for publications a...NASA Metadata APIThe Metadata API from NASA — 1 operation(s) for metadata.Rippling Custom Fields APIDefine and read custom fields attached to employees, departments, and other Rippling resources for tenant-s...GitLab CI/CD metadata APIOperations related to metadata of the GitLab instanceParaSwap tokens APIReturn tokens list from ParaswapEurostat Catalogue APIAPI for discovering all publicly available Eurostat datasets, browsing the navigation tree, and retrieving ...Jupiter Tokens APISearch Solana tokens by mint, symbol, or name; fetch metadata, verification status, tags, and trading metri...Phraseanet Metadata APIRecord captions, metadata values, and status flags.Zora NFT GraphQL APIGraphQL API for querying NFT metadata, on-chain sales, mint events, collection attributes, and market stati...Fivetran Metadata APIThe Metadata API from Fivetran — 1 operation(s) for metadata.King's Research Portal (Pure) OAI-PMHThe standards-based harvesting interface for the King's Research Portal, the front end of Pure — how King's...OSTI ELINK APIThe OSTI ELINK API is the Office of Scientific and Technical Information's submission and retrieval interfa...PHAIDRA OAI-PMH EndpointOAI-PMH metadata harvesting interface for the PHAIDRA repository, used by aggregators such as OpenAIRE, Eur...United States National Library of Medicine Metadata APIAPI metadata and field definitionsVU Research Portal OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the Vrije Universiteit Amsterdam Repository, served by the ins...Atlan GraphQL APIGraphQL interface for querying Atlan's knowledge graph, enabling flexible traversal of metadata relationshi...Invendor Metadata APIThe Metadata API from Invendor — 1 operation(s) for metadata.CU Digital Repository OAI-PMHThe Charles University Digital Repository (Digitalni repozitar UK), a DSpace-based institutional repository...CU Research Publications Repository OAI-PMHThe Charles University Research Publications Repository is a DSpace-based institutional archive where staff...Nutrical Solution Ltd Metadata APIPublic nutrient and allergen reference data.Warner Bros. Discovery Metadata APIContent metadata and manifest submissionKubeflow Pipelines Metadata APIAPI for tracking and managing metadata about ML artifacts, executions, and lineage information throughout t...Thanos Metadata APIThe Metadata API from Thanos — 3 operation(s) for metadata.TU/e Research Portal OAI-PMHOAI-PMH metadata-harvesting interface for the TU/e Research Portal, powered by Elsevier Pure. It exposes re...Western Power Outage Areas Feature ServiceLive outage data for the South West Interconnected System, served as an Esri ArcGIS Online hosted feature s...ZORA Repository OAI-PMHThe Zurich Open Repository and Archive (ZORA) provides open, worldwide access to the peer-reviewed research...University College Dublin Metadata APIThe Metadata API from University College Dublin — 1 operation(s) for metadata.Amiibo API Metadata APIAPI metadata endpointsJupiter Tokens APIVerified Solana token list and metadata.MSU Libraries Catalog OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the "Michigan State University Libraries Catalog" repository, ...MSU Libraries Digital Repository OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the "MSU Libraries Digital Repository" (d.lib.msu.edu), exposi...Polkadot Metadata APIThe Metadata API from Polkadot — 1 operation(s) for metadata.Glassnode Metadata APIThe Metadata API from Glassnode — 3 operation(s) for metadata.PHAIDRA OAI-PMHOAI-PMH metadata harvesting endpoint for the PHAIDRA digital collections, allowing programmatic harvesting ...Terrain Discovery Environment API Metadata APIFile and data metadata annotationUG Research Portal OAI-PMH (Pure)OAI-PMH metadata-harvesting endpoint over the University of Groningen research portal, powered by Elsevier ...LSE Digital Library (Quartex — IIIF / OAI-PMH)The LSE Digital Library publishes digitised and born-digital material from LSE Library collections. The hos...LSE Research Online (EPrints, OAI-PMH)LSE Research Online is LSE's institutional repository — LSE's research outputs, LSE's metadata, LSE's regis...Vineyard Metadata APIInspect and manage object metadataArchive ouverte UNIGE OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for the Archive ouverte UNIGE institutional repository, exposing ...PURR OAI-PMH Metadata APIThe Purdue University Research Repository (PURR) exposes an OAI-PMH endpoint for harvesting research datase...Candid Taxonomy APIReturns Candid's philanthropic classification system (subject, population, support-strategy, and geographic...Eclipse Foundation Web APIFoundation-wide REST APIs for accessing project data, releases, committer paperwork, GeoIP, downloads, mail...Eclipse Projects APIREST API exposing Eclipse Foundation project metadata, releases, committers, and project lifecycle data.GT Digital Repository OAI-PMHPublic OAI-PMH 2.0 metadata harvesting interface for the Georgia Tech Digital Repository (DSpace 7), the in...GT Digital Repository REST APIDSpace 7 REST API for the Georgia Tech Digital Repository, providing programmatic access to communities, co...Climate Engine Metadata APIDataset dates, variables, county names, and raster classifications.Incus Metadata APIThe Metadata API from Incus — 1 operation(s) for metadata.Kubeflow Metadata APIAPI for tracking and managing metadata, artifacts, and lineage for ML workflows running on Kubeflow.Burger Singh Discovery APIPublic, unauthenticated site, content-type, taxonomy, status and author metadata - the self-describing rout...Burger Singh SEO Metadata APIPublic Yoast SEO head endpoint returning the rendered SEO/head metadata and its schema.org JSON-LD graph fo...TwentyAPI Categories APILists the attribute categories available for a property and returns a specific category, providing the voca...Queen's University Belfast Research Portal (Pure OAI-PMH)OAI-PMH metadata harvesting endpoint for the Queen's University Belfast Research Portal, the institutional ...ACM Digital Library Citation Export APIThe ACM Digital Library provides citation export functionality supporting BibTeX, EndNote, and ACM Referenc...ACM Digital Library Content Retrieval APIIndividual publications, conference papers, and journal articles in the ACM Digital Library are accessible ...ACM Digital Library Search APIThe ACM Digital Library search endpoint allows programmatic querying of computing literature across ACM's f...GRO.data OAI-PMH MetadataOAI-PMH metadata harvesting endpoint for GRO.data (Göttingen Research Online), the Dataverse-based research...SUB Göttingen TextAPITextAPI is an open specification developed by SUB Göttingen for serving text and metadata of digital object...Pure Research Portal OAI-PMHOAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting) endpoint for the University of St Andre...SSO Metadata APISAML 2.0 metadata endpoints for exchanging federation configuration between identity providers and service ...St Andrews Research Repository OAI-PMHOAI-PMH endpoint for the DSpace-based St Andrews Research Repository, the institution's open-access reposit...AmeriCorps Metadata APIRetrieve dataset metadata and schema information.Qucosa OAI-PMH (TU Dresden Document Server)OAI-PMH 2.0 metadata harvesting interface for Qucosa, the document and publication server used by TU Dresde...PMC OAI-PMH APIThe PMC OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting) API enables systematic harvesti...SingularityNET Marketplace APIThe SingularityNET AI Marketplace REST API provides service discovery, organization management, and metadat...Taddy Episode Chapters APIFetch chapter markers for an episode via getEpisodeChapters and the chapters field, returning chapter title...Taddy iTunes Info APIResolve Apple Podcasts / iTunes metadata for a podcast with getItunesInfo and the itunesInfo field, includi...Taddy Podcast Series & Episodes APILook up podcast series and episodes via getPodcastSeries, getPodcastEpisode, getMultiplePodcastSeries, getM...United States Department of Agriculture Metadata APIAvailable years, states, reports, and variablesTSpace Institutional Repository (OAI-PMH) — tenant on ScholarisOAI-PMH 2.0 harvesting endpoint for TSpace, the University of Toronto Libraries institutional research repo...OPAL (Open @ La Trobe) OAI-PMH EndpointOAI-PMH metadata harvesting interface for the La Trobe OPAL repository, served via the Figshare platform OA...1inch Token APIToken metadata and discovery endpoints.Bureau of Transportation Statistics Metadata APIDataset and view metadataOpen Access Repository OAI-PMHOAI-PMH metadata harvesting feed for the Open Access Te Herenga Waka—Victoria University of Wellington rese...Spring Framework Metadata APIThe Metadata API from Spring Framework — 2 operation(s) for metadata.Cruz Foam Discovery APIPublic, unauthenticated discovery metadata for cruzfoam.com — the self-describing route index (487 routes a...Cruz Foam oEmbed APIPublic oEmbed 1.0 provider endpoint for cruzfoam.com URLs, returning embeddable rich metadata — title, auth...Cruz Foam SEO Metadata APIPublic Yoast SEO head endpoint returning the rendered head metadata and its parsed JSON-LD schema.org graph...Envisics Discovery APIPublic, unauthenticated discovery metadata for envisics.com — the registered content types and taxonomies, ...Envisics oEmbed APIPublic oEmbed 1.0 provider endpoint for envisics.com URLs, returning embeddable rich metadata — title, auth...Envisics SEO Metadata APIPublic Yoast SEO head endpoint returning the rendered head metadata and its parsed JSON-LD schema.org graph...Apache Tika Java APIThe Tika Java API provides the AutoDetectParser for automatic format detection and parsing, Metadata class ...EnergyX Discovery APIPublic, unauthenticated discovery metadata for energyx.com — the self-describing route index (1,233 routes ...EnergyX oEmbed APIPublic oEmbed 1.0 provider endpoint for energyx.com URLs, returning embeddable rich metadata — title, autho...EnergyX SEO Metadata APIPublic Yoast SEO head endpoint returning the rendered head metadata and its parsed JSON-LD schema.org graph...Anaplan Financial Consolidation APIControls workflows, manages security, and supports retrieval, insertion, update, and deletion of financial ...Apicurio Metadata APIThe Metadata API from Apicurio — 2 operation(s) for metadata.ePrints@IISc OAI-PMHePrints@IISc is the open-access institutional repository of IISc research publications, established in 2002...OpenUCT Institutional Repository OAI-PMHOpenUCT is the University of Cape Town's open access institutional repository, launched in 2014 and built o...ZivaHub Open Data (Figshare API)ZivaHub is UCT's institutional open data repository for research data and scholarly outputs, powered by Fig...Accelsius API DiscoveryThe WordPress REST route-discovery documents served at accelsius.com/wp-json/ and accelsius.com/wp-json/wp/...JokeAPI Metadata APIOperations describing the API surface — categories, flags, formats, languages.CDAP Metadata MicroservicesSearch, annotate, and retrieve business and technical metadata and lineage for CDAP entities such as applic...Maastricht University Research Portal (Pure) OAI-PMHOAI-PMH metadata harvesting endpoint for the Maastricht University Pure (Elsevier) current research informa...FAO FAOSTAT Metadata APIOperations for retrieving dataset and indicator metadataFabric Origin Celebrity APIThe Celebrity API serves metadata about celebrities, including actors, directors, and other entertainment i...Fabric Origin Entertainment APIThe Entertainment API ingests and serves metadata for movies, television shows, and games, including identi...NYCU Dataverse OAI-PMH EndpointOAI-PMH 2.0 metadata-harvesting endpoint ("NYCU Dataverse Dataverse OAI Archive") for harvesting dataset me...SAML Metadata APISAML 2.0 metadata retrieval.DIAL UCLouvain OAI-PMHDIAL (Digital Access to Libraries) is UCLouvain's institutional repository for research publications. It ex...Open Data @ UCLouvain Dataverse OAI-PMHThe UCLouvain Dataverse repository exposes an OAI-PMH 2.0 metadata-harvesting endpoint ("Open Data @ UCLouv...Oracle Database 19c Metadata APISchema and metadata catalogPromethium APIREST API for Promethium's agentic data platform — tenant-scoped OAuth2 authentication, datamap search and c...CaltechDATA OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for CaltechDATA. Verified live 2026-08-19 via the Identify verb (r...Pendo Metadata APIThe Metadata API from Pendo — 2 operation(s) for metadata.Ory metadata APIService MetadataCData Metadata APICatalog/metadata explorationCData Metadata APIThe CData Cloud Metadata API exposes catalog information including schemas, tables, columns, keys, and stor...1inch NFT APIWallet NFT holdings, collection metadata, and floor prices across supported chains.1inch Token APIToken metadata, lists, search, and verification across all 1inch-supported networks.Gutendex APIGutendex is a JSON web API for Project Gutenberg ebook metadata. It provides access to the catalog of 75,00...OData $Metadata APIThe $Metadata API from OData — 1 operation(s) for $metadata.OData Service APIStandard OData service endpoints including service document, metadata document, entity set CRUD operations,...Anaconda.org Package APIREST API hosted on api.anaconda.org that provides read access to conda-forge package metadata including pac...conda-forge Channel Repodata APIStatic JSON index files served over HTTPS from conda.anaconda.org for each supported platform subdirectory ...Battle.net Metadata APIHearthstone metadata including sets, classes, types, and keywordsOpenClinica Metadata APIRead ODM study design metadata.Denodo Data Catalog REST APIThe Denodo Data Catalog REST API provides programmatic access to the catalog of virtual views, web services...Revert Metadata APIEnvironment / app configuration for the connect UI.Memberful Members APIQuery members and their profiles, emails, subscriptions, downloads, and custom JSON metadata (up to 50 keys...NOAA ERDDAP Metadata APIInspect variable and attribute metadata for a specific dataset.OpenCitations Metadata APIOperations for retrieving bibliographic metadataResearcher Metadata Database (RMD) APIPenn State University Libraries' faculty and research metadata service, maintained with OSVPR and West Aret...US Geological Survey Metadata APIAPI metadata and discovery operationsRepositorio Academico OAI-PMHThe University of Chile institutional repository (Repositorio Academico), managed by SISIB and built on DSp...lakeFS metadata APIThe metadata API from lakeFS — 2 operation(s) for metadata.SimpleHash NFT & Token APIMulti-chain REST API providing NFT metadata, ownership, transfers, floor prices, listings, bids, spam score...
Emerging 120 Early or largely undocumented
TUF Repository SpecificationThe TUF specification defines the structure of update repositories including the root, targets, snapshot, a...Papyrus OAI-PMH EndpointOAI-PMH 2.0 metadata harvesting endpoint for Papyrus, the UdeM institutional repository (a DSpace/Scholaris...Netflix Conductor Metadata APIThe Metadata API from Netflix Conductor — 4 operation(s) for metadata.Lexion Contract RepositoryCentralized intelligent repository for agreements, surfacing contracts, parties, key dates, and metadata. L...Bigchaindb Metadata APIFull-text search over transaction metadata.Kyushu University Institutional Repository (QIR) OAI-PMHLive OAI-PMH 2.0 metadata harvesting interface for the Kyushu University Institutional Repository (QIR), ru...QIR / Kyushu University Collections Bulk Metadata (TSV via Handle)Quarterly full-metadata TSV exports for Kyushu University Library digital collections, distributed through ...DSpace Institutional Repository OAI-PMHThe IIT Bombay Central Library institutional repository is built on DSpace and exposes an OAI-PMH 2.0 metad...NetSuite SuiteTalk REST Web ServicesREST-based interface to NetSuite business objects as JSON resources with CRUD operations, SuiteQL high-perf...Copernicus Marine CSW Catalogue APIThe Copernicus Marine Catalogue Service for the Web (CSW) provides OGC-compliant metadata discovery over th...Crystal Reports Metadata APIReport structure and metadataAI Catalog ManifestThe publishing half of the standard — the JSON manifest a domain serves at /.well-known/ai-catalog.json dec...National Energy System Operator Metadata APIRetrieve metadata for datasets and resources.National Archives and Records Administration (NARA) Metadata APIThe Metadata API from National Archives and Records Administration (NARA) — 1 operation(s) for metadata.National Archives and Records Administration Metadata APIThe Metadata API from National Archives and Records Administration — 1 operation(s) for metadata.OlympusDAO Metadata APIDate bounds and indexer metadata.CallMiner Eureka Ingestion APIAsynchronously add or update media and metadata for audio and text-based contacts in a CallMiner Eureka ten...PSAS Institutional Repository OAI-PMHStandards-based OAI-PMH 2.0 metadata harvesting interface for the Universiti Putra Malaysia Institutional R...UTM Institutional Repository (UTM-IR) OAI-PMHThe Universiti Teknologi Malaysia Institutional Repository (UTM-IR) is built on EPrints and exposes an OAI-...TUbiblio OAI-PMH (EPrints)TUbiblio is the publication bibliography of TU Darmstadt, built on EPrints and registered with an OAI-PMH 2...TUdatalib OAI-PMHOAI-PMH 2.0 metadata harvesting interface for TUdatalib (DSpace 8.1). Verified live: Identify returns repos...tuprints OAI-PMH (EPrints)tuprints is the open-access publication repository of TU Darmstadt, built on EPrints with an OAI-PMH 2.0 in...Veeva Systems Metadata APIThe Metadata API from Veeva Systems — 3 operation(s) for metadata.AUB ScholarWorks OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the AUB ScholarWorks institutional repository (DSpace 9.1). Su...DepositOnce OAI-PMH InterfaceOpen Archives Initiative Protocol for Metadata Harvesting (OAI-PMH 2.0) endpoint for DepositOnce, the insti...Enlighten Publications OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for Enlighten, the University of Glasgow's EPrints institutional r...Enlighten Research Data OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for Enlighten Research Data, the University of Glasgow's EPrints r...Open Research Exeter (ORE) OAI-PMHOpen Research Exeter (ORE) is the University of Exeter's institutional repository, built on DSpace, holding...SAP BW BAPI/RFC APIBusiness Application Programming Interfaces (BAPIs) and Remote Function Call (RFC) interfaces for SAP BW pr...KOARA OAI-PMH Metadata APIKOARA (KeiO Associated Repository of Academic resources) is Keio University's institutional repository, rel...NAGOYA Repository OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the NAGOYA Repository, the Nagoya University institutional re...IIT Delhi Institutional Repository OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for the IIT Delhi DSpace 8 institutional repository, enabling har...Rice Research Repository OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the Rice Research Repository. The Identify verb returns reposi...Waseda University Repository (OAI-PMH)OAI-PMH 2.0 metadata harvesting endpoint for the Waseda University institutional repository, hosted on the ...Federal Emergency Management Agency Metadata APIAPI and dataset metadataOUR Archive OAI-PMH MetadataOUR Archive (Otago University Research Archive) is the University of Otago institutional research repositor...TARA OAI-PMH (Trinity's Access to Research Archive)TARA is Trinity College Dublin's open-access institutional repository, built on DSpace. It exposes an OAI-P...Dipòsit Digital OAI-PMHOAI-PMH metadata-harvesting endpoint for the Dipòsit Digital de la Universitat de Barcelona. The Identify v...Habiteo Site Content API — Discovery APIThe wp-json route index and the registered post types and statuses — the route-discovery surface this profi...Lane API Metadata APIThe Metadata API from Lane API — 1 operation(s) for metadata.Biblos-e Archivo OAI-PMH EndpointOAI-PMH 2.0 metadata-harvesting endpoint for Biblos-e Archivo. Supports Identify, ListRecords, ListSets, an...Eridu Discovery APIAnonymous, unauthenticated discovery metadata for eridu.ai — the self-describing route index (167 routes ac...Eridu oEmbed APIPublic oEmbed 1.0 provider endpoint for eridu.ai URLs, returning embeddable rich metadata — title, author, ...Lens Storage & MetadataLens content (post body, media, profile metadata) is stored as JSON following the Lens Metadata Standards a...UTPedia Institutional Repository (OAI-PMH)UTPedia ("UTP Electronic and Digital Intellectual Asset") is the UTP institutional repository running EPrin...E-Dissertationen (ediss.sub.hamburg) OAI-PMHOAI-PMH metadata-harvesting interface for the DSpace-based institutional repository of electronic dissertat...Open-Access-Portal Universität HamburgOpen Access discovery portal aggregating freely available publications, research data, teaching materials, ...T2R2 Research Repository OAI-PMHOAI-PMH 2.0 metadata harvesting interface for T2R2, the Science Tokyo / Tokyo Tech Research Repository oper...ePrints Soton OAI-PMH InterfaceOAI-PMH metadata harvesting interface for ePrints Soton, the University's institutional research repository...IRIS Re.Public@Polimi OAI-PMHPublic OAI-PMH 2.0 metadata harvesting endpoint for the IRIS Re.Public@Polimi institutional research reposi...Texas ScholarWorks OAI-PMH EndpointOAI-PMH 2.0 metadata-harvesting endpoint for Texas ScholarWorks. An Identify request returns repositoryName...Fast Healthcare Interoperability Resources Metadata APIThe Metadata API from Fast Healthcare Interoperability Resources — 1 operation(s) for metadata.TU Wien Research Data OAI-PMHOAI-PMH metadata harvesting interface for the TU Wien Research Data repository (InvenioRDM), supporting sta...Orange Logic Metadata APIList and modify asset metadata - retrieve all metadata fields, update tags and linked fields, and manage la...AURA OAI-PMH Metadata HarvestingAURA provides an OAI-PMH 2.0 endpoint (repository name "Aura") for harvesting Dublin Core and other metadat...HAL Search APIThe HAL Solr-based search API exposes structured queries over the HAL corpus, including publications affili...HAL Sorbonne Université Open Archive (OAI-PMH)HAL Sorbonne Université is the institution's open archive of scholarly publications. Its metadata is harves...UMedia Digital Collection APIsUniversity of Minnesota Libraries APIs for programmatically downloading items, text, and metadata from the ...UniversiDATA CKAN Dataset APICKAN-compatible metadata API of the UniversiDATA platform. Lists datasets and resources and returns dataset...BORIS Portal DSpace REST APIBORIS Portal is the institutional repository and research information system of the University of Bern, run...BORIS Portal OAI-PMH EndpointOAI-PMH 2.0 harvesting endpoint for BORIS Portal, allowing metadata harvesting of the University of Bern's ...dbkit APIdbkit is a web application framework developed by the KIT Library that provides both an API interface and a...Helda OAI-PMH Metadata InterfaceOAI-PMH metadata-harvesting endpoint for Helda, enabling third parties to harvest Dublin Core and other met...KITopen OAI-PMH InterfaceKITopen is KIT's central open-access institutional repository for bibliographic data, full texts, images, r...Knowledge Bank OAI-PMH InterfaceOAI-PMH 2.0 metadata harvesting endpoint for the Knowledge Bank institutional repository. Supports the stan...Yummly Metadata API (Historical)DEPRECATED / HISTORICAL. The Metadata endpoints (GET http://api.yummly.com/v1/api/metadata/{key}) returned ...CentAUR OAI-PMH Metadata APIOAI-PMH 2.0 metadata harvesting interface for CentAUR, the Central Archive University of Reading institutio...FDAT Repository OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the FDAT research data repository. Exposes dataset metadata in...Repository@Nottingham OAI-PMHPublicly accessible OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting) interface for Repos...Research Data Archive OAI-PMH Metadata APIOAI-PMH metadata harvesting interface for the University of Reading Research Data Archive (EPrints), a mult...uO Research OAI-PMHOAI-PMH 2.0 metadata-harvesting endpoint for uO Research. An Identify request confirms protocol version 2.0...UT Research Information (Pure) OAI-PMHOAI-PMH metadata harvesting endpoint documented for UT Research Information, the University of Twente's Pur...Griffith Research Online (GRO) DSpace REST APIREST API for Griffith Research Online, the university's institutional repository, running on DSpace 7.6. Pr...Griffith Research Online OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for Griffith Research Online. Supports the standard OAI verbs (Ide...HAL-ENS-LYON OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint scoped to the ENS de Lyon (ens-lyon) collection of the national HA...Arbor Biotechnologies Content API (WordPress REST)Read-only, anonymously accessible WordPress REST API served by the Arbor Biotechnologies corporate site at ...USM Repository OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for the USM Repository (Repository@USM), an EPrints 3.3.16 instit...IRUA OAI-PMH Metadata APIOpen Archives Initiative Protocol for Metadata Harvesting (OAI-PMH 2.0) interface for the Institutional Rep...UI Scholars Hub OAI-PMHOpen Archives Initiative Protocol for Metadata Harvesting (OAI-PMH 2.0) interface for UI Scholars Hub, the ...DataCat Research Data Catalogue OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for DataCat, the University of Liverpool research data catalogue ...QSpace OAI-PMH Metadata EndpointOpen Archives Initiative Protocol for Metadata Harvesting (OAI-PMH 2.0) endpoint for QSpace, the Qatar Univ...Repositorio da Universidade de Lisboa OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the DSpace-based institutional open-access repository (Reposi...Scholarly Publications OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the Leiden University Scholarly Publications repository, an Is...TOUR Institutional Repository OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for TOUR (TOhoku University Repository), the university's institut...UGM Repository OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for "repository civitas UGM", the institutional repository running...University of Liverpool Repository OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for the University of Liverpool Repository, an EPrints-based open...Java Reflection APIExamine and modify the runtime behavior of applications by inspecting classes, methods, fields, and annotat...BC Data Catalogue CKAN APIThe BC Data Catalogue exposes a CKAN v3 REST API at https://catalogue.data.gov.bc.ca/api/3/action/ providin...Ghent University Academic Bibliography OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the UGent Academic Bibliography, supporting Identify, ListMeta...HAL OAI-PMH EndpointThe HAL platform hosting the ENPC institutional repository collection exposes an OAI-PMH 2.0 endpoint for m...HAL Search API (ENPC collection)École des Ponts ParisTech's scientific output is deposited in its institutional open-access repository, exp...OAI-PMH Repository Plugin (Omeka)Public PHP source hosted on the official EcoleDesPontsParisTech GitHub organization. A forked OAI-PMH repos...Research Data Leeds Repository (OAI-PMH)The institutional research data repository for the University of Leeds, powered by EPrints 3. It exposes a ...TAU Libraries Alma / OAI-PMH Metadata HarvestingThe TAU Libraries Primo discovery layer is backed by the ExLibris Alma library services platform. Alma depl...UF Digital Collections (UFDC) Metadata FeedsThe University of Florida Digital Collections host over 18 million files of books, archival documents, news...EgeriaEgeria is the world's first open source metadata standard for enterprise data management, enabling unified ...MacSphere OAI-PMH Repository InterfacePublicly accessible OAI-PMH 2.0 metadata-harvesting interface for MacSphere, McMaster University Libraries'...MarquezMarquez is an open source metadata service for the collection, aggregation, and visualization of a data eco...OpenLineageOpenLineage is an open standard and API for collecting lineage metadata across data pipelines.Research Online OAI-PMHOAI-PMH metadata harvesting interface for University of Wollongong Research Online, the institution's open ...DADUN Institutional Repository (OAI-PMH)DADUN (Deposito Academico Digital de la Universidad de Navarra) is the university's open-access institution...OASIS Repository OAI-PMHLive OAI-PMH 2.0 metadata-harvesting endpoint for the POSTECH Library OASIS institutional repository (DSpac...Repositorio Institucional Seneca - OAI-PMHOAI-PMH metadata harvesting interface for the DSpace-based institutional repository "Seneca", which collect...Amazon Web Services Metadata APIThe Metadata API from Amazon Web Services — 3 operation(s) for metadata.Curtin espace Institutional Repositoryespace is Curtin University's open-access institutional repository of research publications and higher-degr...Curtin Research Data (via Research Data Australia)Curtin University publishes research data collection records through the national Research Data Australia (...GUPEA Repository OAI-PMH InterfaceGUPEA (Gothenburg University Publications Electronic Archive) is the university's DSpace-based institutiona...IRIS Research Catalogue OAI-PMHOAI-PMH 2.0 metadata harvesting interface for IRIS, Sapienza's institutional research information system / ...OpenBU Repository OAI-PMH APIOpenBU is Boston University Libraries' open-access institutional repository, built on DSpace. It exposes a ...University of Copenhagen Research Portal (CURIS / Pure)The University of Copenhagen Research Portal (researchprofiles.ku.dk) is built on the Elsevier Pure researc...Norgate Data Futures MetadataFutures-specific reference data covering around 100 markets across 11 worldwide exchange groups - market an...Norgate Data Security Metadata and ClassificationsSingle-value reference and metadata lookups for a security - name, symbol, asset id, domicile, currency, ex...Norgate Data Watchlists and DatabasesEnumerate and resolve the security lists in the local database - user and Norgate-maintained watchlists, bu...DDD Digital Document Repository OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the Dipòsit Digital de Documents de la UAB (DDD), the universi...Alzheon Content API (WordPress REST)Read-only, anonymously accessible WordPress REST API served by the Alzheon corporate site at https://alzheo...Comcast Open Ingest APIThe Comcast Open Ingest endpoint accepts metadata and content asset packages from NBCUniversal media partne...Podchaser GraphQL APIPodchaser's GraphQL API provides programmatic access to podcasts, episodes, creators, credits, reviews, and...Collibra Core REST APIThe Collibra Core REST API exposes the full Collibra Platform for programmatic management of communities, d...Collibra Knowledge Graph GraphQL APIThe Knowledge Graph GraphQL API enables retrieval of Collibra assets, relations, communities, domains, and ...data.gov (CKAN catalog)The U.S. federal open data catalog at catalog.data.gov, powered by the open-source CKAN platform. The CKAN ...
Score breakdown
Frequency
79.2
log-scaled weighted occurrences
Breadth
12.7
spread across providers
Quality lift
44.9
mean composite of providers using it
Cohesion
30.1
strength of nearest seed neighbor
Related tags
OAI-PMH 133 co-occurrences
University 136 co-occurrences
Higher Education 136 co-occurrences
Repository 99 co-occurrences
Open Access 87 co-occurrences
Research 115 co-occurrences
Education 142 co-occurrences
Library 76 co-occurrences
Where this tag comes from
Api tag508
Provider tag60
Openapi tag170
Openapi op tag537
Cohort brief
Auto-generatedThe 462 providers in the APIs.io catalog tagged Metadata, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
462
all scored
Mean Kin Score
37.7
+17.0 vs catalog 20.7
Mean Agent Readiness
22.4
+12.7 vs catalog 9.7
Spread
5–85.2
median 36.6 · σ 14.7
How the 462 split by band
Exemplar 20Strong 38Developing 134Thin 163Emerging 104Minimal 3
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 46.3 | 17.5 | +28.8 | 462 |
| Operational Transparency | 27 | 11.3 | +15.7 | 462 |
| Access Clarity | 36.6 | 22.3 | +14.3 | 462 |
| Developer Ergonomics | 29.1 | 17.9 | +11.2 | 462 |
| Discoverability | 70.6 | 60.4 | +10.2 | 462 |
| Contract Governance | 14 | 6.4 | +7.6 | 462 |
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) | 23% | 16% | +7 |
| MCP server (first-party) | 8% | 7% | +1 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 22% | 9% | +13 |
| Security | 98% | 88% | +10 |
| Arazzo workflows | 7% | 2% | +5 |
| Governance rules | 48% | 13% | +35 |
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 Centers for Medicare and Medicaid Services 85.2
- 2 Salesforce 83.3
- 3 Mailchimp 81.5
- 4 ZoomInfo 80.8
- 5 Adobe Campaign 77.3
- 6 Didomi 77.1
- 7 Thanx 76.2
- 8 Outbrain 74.6
- 9 Iterable 73.9
- 10 Dynatrace 71.8
Top by Agent Readiness
- 1 Apollo.io 55.3
- 2 Frame.io 54.9
- 3 NationGraph 53
- 4 Salesforce 52.2
- 5 Wappalyzer 52.2
- 6 Monetate 52
- 7 Uphold 50.7
- 8 Confluence 50
- 9 ZoomInfo 49.5
- 10 Socket 48.6
All 462 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
Every tag here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
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.
Call it yourself
curl for this page
This tag
curl "https://apis.io/api/v1/tags/metadata"
All tags
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/metadata"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/metadata/stats" \
-H "X-API-Key: $APIS_IO_KEY"Discovery needs no key. Ratings and market analysis are Pro.