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 66 Complete, well-documented, and agent-ready

Salesforce Agentforce Agent APIThe Salesforce Agentforce Agent API is a REST API that enables developers to communicate with AI agents dir...91.0 Salesforce Apex REST APISalesforce Apex REST enables developers to expose custom Apex classes as RESTful web services. By annotatin...91.0 Salesforce Composite APIThe Salesforce Composite API allows developers to combine multiple Salesforce REST API requests into a sing...91.0 Salesforce IoT REST APIThe Salesforce IoT REST API provides programmatic access to Salesforce IoT data including contexts, orchest...91.0 Salesforce REST APIThe Salesforce REST API provides a simple and powerful web service interface to interact with Salesforce or...91.0 Algolia Ab Testing APIThe Ab Testing API from Algolia — 6 operation(s) for ab testing.82.8 Algolia Advanced Personalization APIThe successor to classic Personalization: real-time user profiles, personalization strategies and a dedicat...82.8 Algolia Agent Studio APIAlgolia's agent-building runtime: agents, conversations, tools, memory, guardrails and per-turn context, ex...82.8 Algolia Analytics APIReports top searches, no-result searches, click and conversion rates, revenue and other search analytics ag...82.8 Algolia Composition APIComposes multiple search sources into one curated result set - smart groups, curated queries and compositio...82.8 Algolia Crawler APIManages Algolia's hosted web crawler that extracts content from websites and pushes it into indices on a sc...82.8 Algolia Ingestion APIConnector-based data ingestion that pulls records from databases, storage and ecommerce platforms into Algo...82.8 Algolia Insights APIInbound event-ingestion API for click, conversion, view and purchase signals that feed Personalization, Rec...82.8 Algolia Monitoring APIExposes server status, latency, indexing and reachability metrics for a specific application's Algolia infr...82.8 Algolia Personalization APIConfigures and applies user-affinity profiles built from Insights events to re-rank search and browse resul...82.8 Algolia Query Suggestions APIGenerates and maintains query-suggestion indices from popular searches to power as-you-type autocomplete.82.8 Algolia Recommend APIReturns related-products, frequently-bought-together, trending and look-alike recommendations trained from ...82.8 Algolia Search APICore indexing and search API for adding, updating and deleting records and querying them with typo-tolerant...82.8 Algolia Usage APIReturns per-application usage metrics (operations, records, search volume) for cost and quota tracking. The...82.8 Cloudflare API (canonical)The canonical Cloudflare REST API at https://api.cloudflare.com/client/v4 covering account management, DNS ...80.6 Adobe Commerce APIBuild and integrate e-commerce applications with REST, GraphQL, and SOAP web APIs.80.4 Cvent REST APIThe unified Cvent Platform REST API providing programmatic access to events, contacts, registrations, atten...78.0 Confluent Kafka REST APIThe Kafka REST API (Confluent REST Proxy in self-managed deployments, Kafka REST in Cloud) provides HTTP ac...77.3 Kafka Connect REST APIThe Kafka Connect REST API manages connectors, tasks, and worker configuration. Operators use it to deploy,...77.3 ksqlDB REST APIThe ksqlDB REST API exposes ksqlDB, Confluent's streaming SQL engine, over HTTP. Clients submit streaming S...77.3 Cvent Registration REST APIThe Cvent Registration REST API is the registration surface of the unified Cvent Platform REST API. It allo...76.9 Jira Rest APIThe Rest API from Jira — 4 operation(s) for rest.76.3 Limble API V2The Limble CMMS REST API V2 provides HTTPS access to maintenance management data including assets, location...75.4 Secret Server REST APIREST API for Delinea Secret Server enabling programmatic management of privileged credentials, secrets, fol...73.9 MATLAB HTTP InterfaceRESTful web services support for making HTTP requests from MATLAB.72.4 MATLAB Production Server RESTful APIRESTful API for executing MATLAB functions on MATLAB Production Server, including function execution, disco...72.4 MATLAB RESTful Web ServicesCreate and deploy RESTful web services from MATLAB functions using MATLAB Production Server.72.4 ThingSpeak REST APIIoT analytics platform REST API for reading and writing data to channels, creating and managing channels, a...72.4 New Relic Alerts APIThe New Relic Alerts REST API provides endpoints for programmatically managing alert policies, conditions, ...72.3 New Relic Infrastructure Alerts APIThe New Relic Infrastructure Alerts REST API provides endpoints for creating and managing infrastructure-sp...72.3 New Relic NRQL Lookups APIThe New Relic NRQL Lookups API is a REST API for managing lookup tables that can be used to enrich NRQL que...72.3 Qlik Data Integration APIREST API for managing data integration tasks, connections, and data pipelines.72.0 Qlik Sense Proxy APIREST API for session management and authentication through the Qlik Sense Proxy Service.72.0 Qlik Sense Repository APIREST API for managing Qlik Sense repository objects including apps, streams, users, and security rules.72.0 Cvent Platform REST API (Event Cloud)RESTful API for managing events, contacts, registrations, attendees, sessions, speakers, exhibitors, survey...71.9 Service Cloud REST APICore REST API for Service Cloud operations: sObject CRUD over Case, CaseComment, EmailMessage, Knowledge ar...71.9 Scalar API ClientScalar API Client is a fully open-source, offline-first REST API client built on the OpenAPI standard. Supp...71.7 instacart Rest APIThe Rest API from instacart — 1 operation(s) for rest.71.5 Clerk Frontend APIBrowser-facing API consumed by Clerk's frontend SDKs and ClerkJS for sign-up, sign-in, session refresh, and...71.4 Adobe Workfront APIThe core Workfront REST API. Every object in the system has a URI of the form /attask/api/v22.0/{objCode}/{...70.3 HBase REST ServerThe HBase REST Server provides a REST front-end to HBase tables for get/put/scan/delete, namespace and tabl...70.3 Confluence Data Center REST APIREST API for Confluence Data Center and Server for on-premise content, space, and user management.70.1 Amazon API Gateway PortalsThe API Gateway Portals control plane (introduced November 19, 2025) lets you create branded developer port...70.0 Appian Web APIsAppian Web APIs expose Appian data and services to external systems through REST web services. Each Web API...69.0 Kraken Custody REST APIInstitutional custody API providing programmatic access to vaulting, sub-vaulting, wallet generation, trans...68.0 Kraken Earn APIStaking and yield allocation endpoints68.0 Kraken Embed REST APIB2B integration API enabling partners to embed Kraken trading, custody, and Earn capabilities into their ow...68.0 Kraken NFT APIREST API for Kraken's NFT marketplace surfaces: collections, asset lookups, listings, offers, watchlist, an...68.0 Kraken OAuth REST APIOAuth 2.0 authorization surface allowing third-party applications to request scoped delegated access to a K...68.0 Kraken OTC REST APIOver-the-counter execution API for institutional clients to request quotes (RFQ), execute block trades, and...68.0 Kraken Prime REST + WebSocket + FIX APIPrime brokerage API surface (REST, WebSocket, FIX) for institutional clients consolidating execution, custo...68.0 Kraken Ramp REST APIFiat on/off-ramp API surface that lets partner applications offer crypto purchase and conversion experience...68.0 ASP.NET Core Web APIFramework for building HTTP-based RESTful APIs and web services with ASP.NET Core, including controllers, m...67.7 NuGet Server APIRESTful API for interacting with nuget.org and private NuGet feeds, supporting package search, download, pu...67.7 Boomi API Management APIThe Boomi API Management API provides programmatic access to API Management service functionality through R...67.6 Boomi Connector Deployment APIThe Boomi Connector Deployment API provides programmatic access to deploy connectors created using the Boom...67.6 Boomi Flow APIThe Boomi Flow API provides REST endpoints for programmatic access to Boomi Flow functionality. Built on an...67.6 Boomi MFT APIThe Boomi Managed File Transfer (MFT) API provides two main types of APIs for interacting with MFT services...67.6 ServiceNow Batch APIThe ServiceNow Batch API enables sending multiple REST API requests in a single HTTP call, reducing network...67.5 AWS CloudFront API (canonical)The AWS CloudFront REST API exposes operations for managing distributions (CreateDistribution, GetDistribut...67.2 NextGen Enterprise APIAn extensive collection of JSON-based RESTful APIs (800+ routes) that power apps used by provider organizat...66.7

Strong 44 Solid coverage with minor gaps

Nakama APIThe Nakama API is the core REST and WebSocket API for Heroic Labs' open-source game backend server. It prov...66.3 Oracle APEX REST APIREST APIs for Oracle Application Express (APEX), a low-code development platform for building scalable and ...66.0 Red Hat Automation Services Catalog APIREST API for the Automation Services Catalog providing a self-service portal where users can order and mana...66.0 CloudKit Web ServicesThe CloudKit Web Services REST API is structured as /database/1/{container}/{environment}/{database}/{opera...65.9 Clay HTTP API EnrichmentGeneric HTTP request column inside Clay Tables that lets users call any external REST or GraphQL endpoint w...65.6 StayingAPI Agent SkillsPublished portable SKILL.md agent skill in the stayingapi/travel-skills GitHub repo, referenced from the SD...64.8 StayingAPI MCP ServerHosted MCP server (Streamable HTTP, OAuth 2.1/PKCE) exposing 7 read-only tools mapping 1:1 to the REST endp...64.8 AnnounceKit APIThe AnnounceKit API provides GraphQL and REST endpoints for programmatically creating and updating posts, s...64.4 Kentico Management REST APIBuilt-in REST service for reading, creating, updating, and deleting pages and CMS objects within Xperience ...63.3 Xperience Portal APIHTTP API for the Kentico SaaS control plane. Uploads a deployment ZIP package to an Xperience Portal projec...63.3 Census Activations REST APIThe Census Activations REST API (formerly Census Management API) lets teams programmatically manage reverse...63.1 Crossbeam Partner APIRead (and timeline-write) access to Crossbeam Ecosystem Intelligence — partners, populations, reports/overl...62.7 Data API Builder for SQL ServerOpen-source tool that generates REST and GraphQL endpoints for SQL Server and Azure SQL databases from conf...62.7 SQL Server External REST Endpoint InvocationNative T-SQL stored procedure sp_invoke_external_rest_endpoint for calling external HTTPS REST endpoints di...62.7 Creatio Business Process ServiceProcessEngineService.svc runs Creatio business processes from an external application over HTTP. Execute() ...62.0 Creatio DataService APIRESTful DataService web service for reading and writing platform records via InsertQuery, SelectQuery, Upda...62.0 Azure AD Graph API (Deprecated)Legacy REST API for Azure Active Directory (being replaced by Microsoft Graph).61.4 Geneos Gateway REST Command ServiceJSON over HTTP(S) service exposed by the Geneos Gateway so third-party applications can run commands, list ...61.2 APIVerve GraphQL API (alpha)Single GraphQL endpoint that fans out to multiple APIs in one request. Explicitly labeled alpha / not for p...60.8 APIVerve MCP ServerHosted remote MCP server (streamable HTTP) exposing every catalog endpoint as individual MCP tools with inp...60.8 Splunk Cloud Platform REST APIThe Splunk Cloud Platform REST API provides a subset of the Splunk Enterprise REST API endpoints for managi...60.5 Splunk HTTP Event Collector (HEC) APIThe Splunk HTTP Event Collector (HEC) is a high-performance REST API data input that accepts JSON or raw te...60.5 Contensis Delivery APIThe Contensis Delivery API focuses on delivering content created in content types and entries to websites a...60.3 Contensis Management APIThe Contensis Management API allows developers to import and manage content within content types and entrie...60.3 Skylar One REST APIThe REST API for Skylar One (formerly SL1), giving external systems programmatic access to tickets, devices...60.3 Synthflow Platform APIThe Synthflow Platform API provides REST endpoints to manage assistants, phone numbers, calls, knowledge ba...60.0 Liveblocks REST APIServer-side REST API for managing rooms, room access, storage, active users, broadcast events, comments and...59.4 Redis Cloud APIThe Redis Cloud REST API for managing subscriptions, databases, cloud accounts, access control, and logs on...59.4 Redis Enterprise APIREST API for managing Redis Enterprise Software clusters. Provides endpoints for cluster configuration, dat...59.4 Unifonic Rest APIThe Rest API from Unifonic — 3 operation(s) for rest.59.0 NeverBounce API v4RESTful JSON API for email verification. Provides single email verification (`/single/check`), bulk job ver...58.6 Celigo integrator.io Platform APIThe integrator.io Platform API is a RESTful JSON API secured by Bearer Tokens. It provides programmatic acc...58.1 ReefAPI MCP ServerHosted MCP server over streamable-HTTP with 5 discovery-first tools (search_engines, get_catalog, get_engin...57.7 FIS Wealth Management APIFIS wealth management APIs enable integration with portfolio management, account aggregation, trading, and ...57.6 MailerSend APIMailerSend API v1 provides RESTful endpoints for sending emails (single, bulk, scheduled), templates, domai...57.4 Read AI REST APIOpen-beta public REST API for programmatic access to a user's Read AI meeting data. Three documented meetin...57.4 DataHub REST APIThe Rest.li API represents the underlying persistence layer and exposes the raw PDL models used in storage....56.9 mParticle Platform APIManagement REST API used to programmatically configure mParticle inputs, outputs, filters, audiences, data ...56.8 mParticle Profile APIREST API for retrieving unified user profiles, identities, attributes, and audience memberships at scale to...56.8 mParticle Warehouse Sync APIREST API for building reverse-ETL pipelines that pull data out of a customer data warehouse (connections, d...56.8 Custom Connectors APICustom connectors allow you to create wrappers around REST or SOAP APIs for use in Power Apps, Power Automa...55.8 Mem0 Platform APIThe Mem0 Platform API provides hosted memory services for AI agents, exposing endpoints for adding, searchi...55.3 The Trade Desk Platform APIThe original REST Platform API covering advertisers, campaigns, ad groups, creatives, targeting data, repor...55.1 Makinari REST APICore Makinari platform API covering Visitors (tracking and identification), Finder (contact and company sea...54.3

Developing 189 Usable, with meaningful gaps to close

Syncari Embed APIREST API for embedding and automating Syncari. Covers instance provisioning, synapse create/test/activate, ...53.9 Coupa CCW APIThe Coupa Contingent Workforce (CCW) REST API enables customers and partners to build applications and inte...53.5 Coupa CSO APIThe Coupa Sourcing Optimization (CSO) API is a RESTful web service for importing and exporting fact sheet d...53.5 Coupa Expenses APIThe Coupa Expenses API provides RESTful endpoints for managing expense reports, expense lines, expense cate...53.5 Coupa Inventory and Receipts APIThe Coupa Inventory and Receipts API provides RESTful endpoints for managing receiving transactions, invent...53.5 Coupa Invoicing APIThe Coupa Invoicing API provides RESTful endpoints for creating, updating, and querying invoices associated...53.5 Coupa Open Buy APIThe Open Buy API provides a faster, standard, and secure interface for searching and purchasing items in re...53.5 Coupa Payments APIAPI for managing Coupa Pay invoice payments and expense payments, including retrieval, export tracking, and...53.5 Coupa Procurement APIThe Coupa Procurement API provides RESTful endpoints for managing the full procure-to-order lifecycle inclu...53.5 Coupa Treasury APIREST API for retrieving and updating Coupa Treasury Management data such as cash flows and account balances...53.5 ecforce API v2The ecforce platform REST API. Version 2 splits into v2/admin (administrator-scoped, mirroring the ecforce ...53.2 Planhat REST APIPlanhat's REST API for reading and writing every core Customer Platform object — companies, end users, lice...52.9 Deep Blue Data REST APIPublic REST API for Deep Blue Data, the University of Michigan Library's open repository for research datas...52.6 Virtual Infrastructure JSON APIHTTP and JSON based wire protocol as an alternative to SOAP and XML for vCenter Server 8.0 Update 1 and lat...52.3 Bruno API ClientBruno is an open-source API client for exploring and testing REST, GraphQL, and gRPC APIs. Collections are ...51.9 Bruno API ClientThe core open-source, git-native desktop API client (a lightweight Postman/Insomnia alternative). Compose a...51.9 Agiloft CLM REST APIThe Agiloft REST interface, served from every Agiloft knowledgebase under /ewws/. It exposes twenty documen...51.7 Lambda Cloud APIThe Lambda Cloud API is the REST control plane for launching, listing, starting, stopping, and terminating ...51.7 Octopus Energy Kraken REST APIThe Octopus Energy developer portal exposes a Kraken-backed REST API alongside the public GraphQL surface. ...51.6 Coveo Rest APIThe Rest API from Coveo — 6 operation(s) for rest.51.2 Nextworld Platform REST APIInbound REST endpoints into the Nextworld Platform. Every table and logic block created in the platform aut...51.1 Allo-Media Activate APIRead-only REST API over calls that have finished processing on the Allo-Media platform — transcription, red...50.9 Cisco ACI APIREST API for Cisco Application Centric Infrastructure (ACI) providing programmable access to data center ne...50.9 Cisco Catalyst Center APIREST API for Cisco Catalyst Center (formerly DNA Center), providing intent-based networking capabilities in...50.9 Cisco Intersight APIREST API for Cisco Intersight cloud operations platform providing infrastructure management, workload optim...50.9 Cisco ISE APIREST API for Cisco Identity Services Engine (ISE) enabling network access policy management, guest services...50.9 Cisco Meraki Dashboard APIRESTful API for managing Cisco Meraki cloud-managed networking devices including wireless access points, sw...50.9 Cisco SD-WAN APIREST API for Cisco SD-WAN (formerly Viptela) providing programmatic access to WAN edge device management, p...50.9 Cisco ThousandEyes APIREST API for Cisco ThousandEyes digital experience monitoring platform, providing access to network, applic...50.9 Cisco Webex APIREST API for Webex collaboration platform enabling messaging, meeting management, device control, and admin...50.9 Neon Data APIThe Neon Data API provides a secure, stateless HTTP interface to Neon Postgres databases, allowing develope...50.9 Tableau Server Client (Python)Python library that wraps the Tableau REST API for easier programmatic access.50.9 Tableau VizQL Data ServiceThe VizQL Data Service provides a programmatic HTTP interface to query published data sources outside of Ta...50.9 Oracle SQL Developer REST APIRESTful services for Oracle SQL Developer.50.8 Apollo ConnectorsApollo Connectors simplify REST API orchestration in graphs, replacing unmaintainable procedural code with ...50.5 Optus SMS Suite 2FA REST APIHosted two-factor authentication API that creates an SMS one-time-code challenge for a mobile handset with ...50.1 Optus SMS Suite REST Email APICompanion REST API to the SMS gateway for scheduling and sending plain-text transactional email over a sepa...50.1 Cambridge API Gateway (Card / Student / HR)UIS API Gateway (ALPHA) publishing read-oriented REST APIs — University Card, University Student (CamSIS-so...50.0 Binance.US REST APIThe Binance.US REST API is the primary programmatic interface to the exchange. It exposes general system an...49.9 etcd v2 HTTP APIThe original etcd v2 API exposed a RESTful HTTP interface for key-value operations using a hierarchical dir...49.9 Livepeer Studio REST APIPrimary REST API for the Livepeer Studio gateway. Resource-oriented JSON endpoints for live streams, on-dem...49.8 OutRival Rest APIThe Rest API from OutRival — 2 operation(s) for rest.49.7 Vast.ai REST APIThe Vast.ai REST API is the control plane for the GPU marketplace. It supports searching offers across host...49.7 TraceLink OPUS Platform Event APIThe OPUS Platform exposes one /api/events endpoint per environment. Every operation is a POST to that endpo...49.6 TraceLink Smart Event Manager REST APISynchronous JSON/REST API that acts as an event ledger for serial number observations across pharmacy, ware...49.6 Brightlayer Operations Insight APIsFamily of REST APIs that let partners and customers extend the monitoring capabilities of Eaton power infra...49.5 Brightlayer RESTful API (On-Premise)RESTful API surface of Brightlayer 8.0 (on-premise platform) covering the unified Power, Distributed IT, DC...49.5 Todoist REST API v2The Todoist REST API v2 is the legacy recommended API for external integrations, providing access to tasks,...49.5 Norse World REST-APIThe Norse World REST-API, part of the Norse World research infrastructure at Uppsala University's Departmen...49.4 Dane Badawcze UW Research Data Repository REST APIThe University of Warsaw Research Data Repository (Dane Badawcze UW) is a Dataverse-based institutional rep...48.6 ReIn UW Institutional Repository REST APIThe Institutional Repository of the University of Warsaw (ReIn UW, Repozytorium Instytucjonalne Uniwersytet...48.6 Speechmatics Management APIREST API for programmatic management of projects, API keys, usage tracking, and account administration.48.6 Speechmatics Text-to-Speech APIREST API for converting text to natural-sounding speech with multiple voice options and language support.48.6 MagicBell REST API v1The legacy MagicBell REST API (v1) for notification delivery, user management, and channel configuration. S...48.3 Vinkius APIREST API behind the AI Connect SDK: application users, connector connections, write-only credentials, conne...48.2 May Mobility Fleet Batch (REST) APIA REST API that returns historical May Mobility vehicle data between two Unix timestamps. Telemetry is retr...48.1 SAP Integration Suite Advanced Event Mesh APIThe SAP Integration Suite Advanced Event Mesh (AEM) REST API provides management capabilities for event bro...48.1 Workday REST APIRESTful API providing modern JSON-based access to Workday data and services. Uses OAuth 2.0 authentication ...48.1 Oracle Retail Integration Cloud Service APIOracle Retail Integration Cloud Service (RIB and BDI) provides messaging and bulk data integration APIs con...48.0 Oracle Retail Pricing Cloud Service APIOracle Retail Pricing Cloud Service provides REST APIs for regular price management, promotional pricing, c...48.0 Oracle Retail Xstore Point of Service APIOracle Retail Xstore Point of Service provides APIs for store operations including transactions, inventory ...48.0 Stack Overflow for Teams API v3Newer REST API powering Stack Overflow for Teams (private/internal instances). Resource-oriented (questions...48.0 ANU Open Research DSpace REST APIThe HAL+JSON REST API of ANU's self-hosted DSpace 7.6.7 repository, reachable anonymously at /server/api fo...47.9 Apache Airflow Experimental API (Deprecated)The experimental API that preceded the stable REST API. This is deprecated and should not be used for new i...47.6 Akash Chain Node (gRPC / REST / RPC)Direct access to the Akash Cosmos-SDK chain over gRPC, REST (LCD), and Tendermint RPC. Used to query state,...47.5 Akash Console APIREST API for the managed Akash Console - deploy workloads with a managed wallet and credit-card billing, li...47.5 bonndoc DSpace REST API (bot-challenged)bonndoc runs DSpace 7-class software, which exposes a HAL/JSON REST API at /server/api. It is recorded with...47.5 Daily REST APIREST API for managing Daily domains, rooms, meeting tokens, recordings, transcripts, meetings, participants...47.5 Pipecat Cloud (Daily Bots) APIREST API and SDKs for deploying and managing voice AI agents built with the open-source Pipecat framework o...47.5 University of Bonn GitLab REST API v4The University of Bonn self-hosts GitLab at gitlab.uni-bonn.de and its REST API v4 answers anonymous caller...47.5 CJ Affiliate Commission Detail API (Legacy)DEPRECATED XML REST API for near-real-time commission and item-detail data. CJ's own documentation states i...47.1 reposiTUm DSpace REST APIThe DSpace 7 REST layer of reposiTUm is deployed but fronted by a crawler filter: /server/api returned 503 ...47.1 TISS REST APIREST API of TISS, TU Wien's Information Systems & Services platform — the course catalogue, curricula, org ...47.1 TU Wien Research Data REST APIPublic REST API of the TU Wien Research Data repository, running InvenioRDM 14.0. Records, communities, aff...47.1 IESO Registration System Facilities APIA REST API on the Appian-based Online IESO platform for retrieving and maintaining facility registration da...46.8 IESO Reports Site REST APIA RESTful file-access API provided by Axway SecureTransport, used to automate retrieval of reports from the...46.8 IESO Retrofit System APIA web service API for the Retrofit program under Save on Energy, IESO's conservation and demand management ...46.8 Pega DX APIThe Constellation Digital Experience (DX) API — REST endpoints external systems use to create Launchpad/Pla...46.8 Pyth Rest APIThe rest API from Pyth — 11 operation(s) for rest.46.8 Sepasoft Web ServicesThe REST and SOAP surface the Sepasoft Web Services module exposes. Endpoints are authored by the operator ...46.4 Taylor's e-Repository DSpace CRIS REST APIThe Taylor's e-Repository runs DSpace CRIS 2022.01.01 self-hosted at irepo.taylors.edu.my (resolving throug...46.3 OpenMetadata REST APIThe OpenMetadata REST API — a JWT-authenticated (Bearer) CRUD API over every data asset and governance enti...46.1 Builder.io Content APIREST API for retrieving published content from Builder.io models. Supports filtering via MongoDB-style quer...45.9 Builder.io Write APIAPI for programmatically creating, updating, and deleting content entries in Builder.io. Intended for serve...45.9 ACI Open Payment Platform — Server-to-Server APIThe core RESTful payment API of the ACI Open Payment Platform (PAY.ON gateway). Server-to-Server integratio...45.7 Dremio Cloud REST APIREST API for Dremio Cloud covering the Open Catalog (sources, folders, tables, views, wikis, tags, lineage)...45.5 Tavily Web APIThe Tavily Web API offers a unified set of endpoints for AI agents to search the web, extract page content,...45.5 Oracle APEX Cloud REST APIREST APIs for provisioning and managing Oracle APEX instances in Oracle Cloud Infrastructure, including wor...45.2 Oracle APEX REST Administration APIREST Administration API enabling APEX instance administrators to perform administrative functions over REST...45.2 Oracle APEX REST Data Services APIRESTful API for Oracle APEX applications enabling data access and manipulation through REST endpoints.45.2 Oracle ORDS Database APIREST API for Oracle Database management and monitoring operations through ORDS, including pluggable databas...45.2 Oracle REST Data Services (ORDS) APIREST API framework integrated with APEX for creating RESTful services including modules, templates, handler...45.2 Microsoft Project Online APIREST API for accessing and managing Project Online data, including projects, tasks, resources, and assignme...45.1 PointClickCare FHIR APIPointClickCare FHIR API provides HL7 FHIR-compliant access to resident clinical data for post-acute and lon...45.1 TIBCO Rest APIThe Rest API from TIBCO — 2 operation(s) for rest.45.0 Kareo Clinical Open APIThe Kareo Clinical Open API provides REST-based access to EHR clinical data, exposing patient clinical reco...44.8 SAP HANA REST Info APIREST API for retrieving system information and metadata about SAP HANA Platform instances.44.8 CyberArk PAM Self-Hosted REST APIThe Privileged Access Manager Self-Hosted REST API exposes the Vault for managing accounts, safes, platform...44.7 Genability Rest APIThe Rest API from Genability — 32 operation(s) for rest.44.7 GUNZScan Explorer APIGUNZScan is the GUNZ chain block explorer, referenced from Gunzilla's own chain documentation as the offici...44.7 Splunk SOAR REST APIThe Splunk SOAR REST API creates, updates, queries and selectively removes the objects the platform automat...44.7 WingtraCLOUD APIThe versioned REST API the WingtraCLOUD browser client at cloud.wingtra.com calls — sites, flights, drones,...44.7 Flowable REST APIFlowable also ships a packaged REST API webapp that exposes the Process Engine services over HTTP. The REST...44.5 Clear Channel Outdoor Automated Direct APIREST API for the CCO.IO Automated Direct platform at direct.cco.io. Supports search, retrieval and manageme...44.4 Spring Data REST APISpring Data REST automatically exports Spring Data repository interfaces as RESTful hypermedia-driven APIs ...44.4 Spring MVC Web FrameworkModel-View-Controller web framework built on the Servlet API. Supports annotation-driven controllers, conte...44.4 Polymarket CLOB APICentral-limit order book REST API for Polymarket - place, cancel, and query orders, list markets and tokens...44.2 Polymarket Gamma APIRead-only metadata API for markets, events, tags, and categories - the surface that powers polymarket.com's...44.2 Trieve REST APIProduction REST API for Trieve Cloud. Organizes resources around organizations, datasets, chunks, chunk gro...44.0 Bagisto REST APIRESTful API for managing all Bagisto e-commerce operations including products, categories, customers, order...43.9 Apache Struts REST PluginThe Struts REST Plugin provides a convention-based REST API framework for building RESTful services. It map...43.6 Spring WebFlux HTTP Service ClientDeclarative HTTP service interface client allowing annotation-based HTTP client definitions with @HttpExcha...43.5 Spring WebFlux WebClientReactive, non-blocking HTTP client for consuming REST services and other APIs. Supports builder-based confi...43.5 ResearchSpace DSpace REST APIThe HAL+JSON REST API of the University's self-hosted DSpace 7 instance. /server/api/core/communities retur...43.3 Ping++ Payments APIPing++ REST payments API — create and query Charges, Refunds, Transfers (enterprise payouts), Red Envelopes...43.1 Pocket Network Shannon Chain APICosmos SDK-based REST and gRPC API for interacting with the Pocket Network Shannon protocol chain. Provides...43.1 Oracle Transportation Management Data Export REST APIOracle Transportation Management Data Export REST API facilitates table-centric data extraction and integra...42.9 OpenHands Local GUI REST APILocal React application with a REST API behind it for driving agents from the desktop. Shipped via Docker a...42.7 SAP Fieldglass REST APICore REST API for SAP Fieldglass that allows clients to send and receive integrated data directly against t...42.5 Sigstore Rekor API (consumed)Rekor is the Sigstore transparency log that cosign writes to and reads from when recording and verifying si...42.5 Zep Cloud APIThe Zep Cloud API delivers agent memory and temporal knowledge graph services over REST. It exposes endpoin...42.5 EchoSync Authorizer APIOAuth 2.0 authorization endpoint that issues bearer tokens consumed by the EchoSync Customer API and Carrie...42.4 EchoSync Carrier APICarrier-facing REST API enabling carriers to view available truck loads in real time, place offers, and boo...42.4 EchoSync Customer APIShipper-facing REST API providing rapid access to competitive truckload quotes and rates 24/7/365, load cre...42.4 EchoSync Partner-Connect APITMS partner integration API providing seamless load creation (Truckload, LTL, and Partial), LTL freight rat...42.4 Kagi Search APIThe Kagi Search API delivers premium, ad-free web search results powered by the Kagi index, designed for AI...42.4 GT Digital Repository REST APIDSpace 7.6 REST API for the Georgia Tech Digital Repository, providing programmatic read access to communit...42.3 dxFeed REST Web Service APIREST service over the core dxFeed API with /events (snapshot), /eventSource (Server-Sent Events stream), /a...42.2 CME FedWatch APIREST API exposing the data behind the CME FedWatch Tool: market-implied probabilities of FOMC rate-change d...42.0 CME Reference Data APIA set of JSON RESTful web service APIs that provide access to product and instrument reference data for CME...42.0 CME Term SOFR APIJSON-over-REST API delivering CME Term SOFR Reference Rates - the IOSCO-compliant forward-looking term Secu...42.0 EUR/USD Cross Currency Basis Index APIJSON-over-REST API delivering the CME-administered EUR/USD Cross Currency Basis Index with real-time update...42.0 Greeks and Implied Volatility APIREST API delivering CME-calculated option Greeks (delta, gamma, vega, theta, rho) and implied volatility su...42.0 Real-Time Futures and Options Data APIReal-time market data API delivering futures and options price, volume, and open-interest information acros...42.0 Repositorio da Universidade de Lisboa — DSpace REST APIAnonymous HAL+JSON REST API of the institution's DSpace 7.6.1 repository — communities, collections, items,...42.0 Sage 200 APISage 200 API provides REST access to Sage 200 Standard and Professional business management data including ...42.0 Sage 50 Accounts APISage 50 Accounts API enables desktop accounting integration for UK small businesses. Provides access to acc...42.0 Sage Intacct APISage Intacct provides both REST and XML APIs for advanced financial management including multi-entity conso...42.0 Ignition Gateway REST APIThe Ignition Gateway REST API (available in Ignition 8.3+) provides an OpenAPI- compliant HTTP interface to...41.9 Chainalysis Address Screening APIEnterprise REST API for assessing a wallet's risk exposure - returns categorised exposure (e.g. darknet mar...41.8 Chainalysis Entities APIEnterprise REST API exposing Chainalysis's labelled-entity dataset - look up the entity behind a given addr...41.8 Chainalysis KYT APIEnterprise REST API for real-time anti-money-laundering monitoring of crypto transactions - register deposi...41.8 Chainalysis Sanctions Screening APIFree public REST API that returns whether a given crypto address is identified as sanctioned by OFAC, EU, o...41.8 W&B REST APIREST endpoints exposed by the W&B platform for ingestion, artifact upload, file storage, and integration ca...41.7 Apache Solr Config APIThe Solr Config API and Request Parameters API provide REST endpoints for managing Solr's solrconfig.xml se...41.6 Apache Solr Indexing APIThe Solr Indexing API provides HTTP endpoints for adding, updating, and deleting documents from the search ...41.6 Apache Solr Schema APIThe Solr Schema API provides REST endpoints for managing the schema of a Solr collection, including field t...41.6 Apache Solr Search APIThe Solr Search API provides HTTP endpoints for full-text document search, including query parsers (Standar...41.6 Avify REST API v1Avify's REST API (base path /api/v1). Includes a connectivity test endpoint and store/product media upload....41.5 Cognite Data Fusion APIThe Cognite Data Fusion (CDF) REST API provides programmatic access to industrial data including assets, ti...41.5 Name Whisper REST APIThe REST twins of the MCP tools. The docs state "All MCP tools have equivalent REST endpoints under /api/*....41.4 E2open Supply Chain Platform APIE2open supply chain platform APIs enable supply chain event management, transportation management, customs ...41.3 FreeWheel Media Rest APIThe Rest API from FreeWheel Media — 1 operation(s) for rest.41.3 Contify News APIThe Contify News API is a developer-friendly REST/JSON API that aggregates, deduplicates, and enriches busi...41.1 Mati Logistics Track and Trace APIREST/JSON API versioned under /v2 at https://api.matilogistics.com for tracking requests, shipments, contai...41.1 Quorum Production Reporting APIQuorum Production Reporting API provides access to well production volumes, allocations, gas balancing, and...41.1 Quorum Royalty Accounting APIQuorum Royalty Accounting API enables access to royalty payment calculations, owner statements, suspense ma...41.1 Apache DorisApache Doris provides a MySQL-compatible protocol for SQL queries, a REST API for cluster management and mo...41.0 Excel REST API (OneDrive)REST API for accessing Excel files stored in OneDrive and SharePoint.40.9 HMRC Corporation Tax APIThe HMRC Corporation Tax APIs enable accounting software to submit corporation tax returns, retrieve liabil...40.9 HMRC Customs Declarations APIThe HMRC Customs Declarations APIs enable customs software to submit import and export declarations, manage...40.9 HMRC PAYE (Pay As You Earn) APIThe HMRC PAYE APIs enable payroll software to submit employer payroll data, retrieve tax codes and employee...40.9 HMRC Self Assessment APIThe HMRC Self Assessment APIs enable software to submit and manage self assessment tax returns, income sour...40.9 Grape"Opinionated framework for creating REST-like APIs in Ruby." Provides a routing DSL with parameter validati...40.8 HTTPartyHTTP client gem that "makes consuming RESTful web services dead easy" via a class-level DSL. Wraps Net::HTT...40.8 Labelbox REST APIREST API providing access to Labelbox platform resources. Available at https://api.labelbox.com/api/v1, thi...40.8 REST ClientSimple HTTP and REST client for Ruby inspired by Sinatra's microframework style. Provides class-level GET/P...40.8 Ruby on Rails (API Mode)Rails generated with the --api flag boots a slimmer middleware stack and an ApplicationController inheritin...40.8 RubyGems.org Registry API v2Version 2 of the rubygems.org registry API. Adds gem version detail endpoints with optional platform query ...40.8 TYPO3 REST API Extension (t3api)The sourcebroker/t3api extension provides an easy-to-configure REST API layer for TYPO3 Extbase models. API...40.8 ThunderCore Explorer API (BlockScout)Etherscan-compatible REST API (?module=&action=) and ETH RPC API exposed by the BlockScout block explorer f...40.7 Veradigm Unity APIThe Veradigm Unity API exposes clinical, scheduling, demographic, and practice management functions across ...40.5 Apache Tomcat Manager APIThe Tomcat Manager application provides an HTTP text protocol API for deploying, undeploying, starting, sto...40.3 Emory Canvas LMS REST APIEmory's instance of the Instructure Canvas learning management system exposes the standard Canvas LMS REST ...40.3 AVEVA CONNECT Data Services APIAVEVA CONNECT (formerly AVEVA Data Hub / OSIsoft Cloud Services) provides cloud-native REST APIs for indust...40.0 Milvus REST API v2Milvus v2 REST API covers collections, partitions, vectors, search, query, indexes, and role/RBAC managemen...40.0 Apache NiFi RegistryNiFi Registry provides a central location for storage and management of shared NiFi flow resources, enablin...39.9 PKU Open Research Data Platform (Dataverse REST API)Dataverse-based research data repository operated by the PKU Library across social science, health, bioinfo...39.9 PRISM Research Data Repository (Borealis Dataverse)The University of Calgary's research-data collection is a Dataverse collection on Borealis, the national Ca...39.9 ServiceMax Max REST APIServiceMax REST API (Max REST API) enables integration with ServiceMax field service management capabilitie...39.8 ThingWorx REST APIThe ThingWorx Industrial IoT platform REST API enables developers to interact with Things, Properties, Serv...39.8 Windchill REST ServicesWindchill PLM REST Services provide OData-compliant REST API access to product lifecycle management data in...39.8 API3 Airnode HTTP GatewayThe Airnode HTTP gateway exposes a REST endpoint that allows authorized callers to query an Airnode operato...39.7 Directory of Healthcare Services (Service Search) APISearch for NHS healthcare services across England including GPs, dentists, opticians, hospitals, pharmacies...39.7 Health Research Data Catalogue APIRetrieve metadata about NHS health datasets suitable for publication in health research catalogues. Enables...39.7 NHS Website Content APIPull content from the NHS.UK website about health conditions, medications, live well guidance, mental healt...39.7 FreiData research-data repository REST APIREST API of FreiData, the university's research-data repository, deployed and operated on its own host at f...39.6 Rockwell FactoryTalk Hub APIRockwell FactoryTalk Hub provides cloud-based industrial API services for connecting FactoryTalk software a...39.6 Rockwell FactoryTalk Logix Designer APIRockwell Automation FactoryTalk Logix Designer provides programmatic access to Logix controller programming...39.6

Thin 302 Limited public surface area

Emerging 300 Early or largely undocumented

Minimal 53 Almost no public developer surface

Companies reaching this through an API (656)

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

3DaGoGo AbsenceSoft ACI Worldwide Acre Open Data ActionIQ Adobe Adobe Commerce Adobe Workfront Agiloft airSlate Akash Network Alberta Alchemy Algolia Allo-Media Aloha POS American University of Beirut AmeriGEOSS Community Platform Analyze Boston ANDPAD Anduril Industries Angular AnnounceKit Ansible Automation Platform Apache Airflow Apache Camel Apache Cassandra Apache DolphinScheduler Apache Doris Apache NiFi Apache SkyWalking Apache Solr Apache Struts Apache Tez Apache Tomcat API3 APITemplate.io Apollo GraphQL Appcues Appian Apple CloudKit Aragón Open Data Arkham Intelligence AspenTech Augment Australian National University Authsignal Automatisch Autonomous University of Madrid Avamar

Show all 656 companies ↓

AVEVA Avify Avoindata.fi Babylon.js Bagisto Bahia Blanca Open Data Bahia Open Data Band Protocol Barnet Open Data BC Data Catalogue BetaList Bienvenido a OpenData UGR Binance.US Bitnomial Blackboard Blue Yonder BODIK ODCS BoltMCP Boomi Boulevard BoxxApps Open Data British Columbia (DataBC) Bruno Bryter Buenos Aires Data Buildium Bunny.net Caddy Calderdale Data Works Cali Open Data California Health and Human Services California Natural Resources Agency California Open Data Callab AI Capital Markets Gateway Carbone CargoWise Casdoor Cask Celigo Census CenturyLink (Lumen Technologies) Chainalysis Chainguard Chameleon Charles University Check Cisco City of Milan Open Data City of San Jose City of Toronto Open Data CJ Affiliate Clay Clear Channel Outdoor ClearML Clerk ClinicalTrials.gov Cloudbeds Cloudera CloudEvents Cloudflare CloudFront Clover CME Group Cognite CoinEx Collate Collibra Comet CommScope Holding Companies Registration Office Open Data Confluence Consip Open Data Construction Monitor ConstructionOnline Contensis Contify Convert Cosign Coupa Coupang Coursera Coveo Coyote Logistics Creatio Crossbeam Crossmint CRS Credit API Cure Hydration Cvent Cvent Registration CyberArk Cyera Dados abertos Distrito Federal Dados Abertos POA Dados RS DagsHub Daily DATA GO JP Data Mill North (Leeds) Data.gov Inventory data.gov.au Federal DATA.GOV.HK data.gov.hr data.gov.ie data.gov.lv data.gov.mk data.gov.rs data.gov.uk CKAN Publishing Service data.overheid.nl data.sa.gov.au South Australia data.zagreb.hr Official Open Data Portal DataHub dataset.gov.md (Portalul Datelor Deschise) DataVic Victoria Datenregister Berlin dati.emilia-romagna.it dati.gov.it Datos abiertos Datos Abiertos ACUMAR Datos Abiertos ARSAT Datos Abiertos Bogota Datos Abiertos Salud Argentina Datos Agricultura Argentina Datos Argentina Datos Energia Argentina Datos Provincia de Misiones Datos Transporte Argentina Datos Turismo y Deportes Argentina datos.gob.mx - Sitio oficial de datos abiertos del Gobierno de la República datos.gub.uy - Catálogo de Datos Abiertos datos.misiones.gov.ar DBpedia Delinea Delx Department of Labor Directus DocRaptor Documint DOE NETL Energy Data Exchange Donnees Ouvertes Montreal Donnees Quebec Dotmatics Dremio Drone Droplet Biosciences dxFeed Dynamic e-Gov Data Catalog E2open Eaton Echo Global Logistics Edi 214 edX Emory University Empatica ENERGYDATA.info Entre Rios Open Data Envio Eppo Espirito Santo Open Data Espresso Essex Open Data Estuary Flow Etcd Ethiopia Open Data EUDAT B2FIND Everlit Faire FastMCP Filecoin Fillout Firely FIS Global Fish Audio Fleet Complete Flexport Flowable Flywheel Forest Admin Formspree Formstack Fortaleza Dados Abertos FourKites FreeWheel Media FullStory Functionize Galileo Financial Technologies Gem Genability Geneos Georgia Institute of Technology Gifu Prefecture Open Data Godot Engine Goldsky Google Cloud Datastore Gouvernement ouvert Canada (FR) gov.il GovData Deutschland GovData Germany Governo Aberto do Estado de São Paulo Granola Greece National Data Portal GridGain Grok & Mon Gunzilla Games Habiteo Hanyang University Harmonic Hawaii Open Data Portal Haystack / deepset Helius Heroic Labs Higress Hiro HKEX HMRC UK Tax Authority Hostfully Huly Humanitarian Data Exchange Hyperliquid Hyperproof Hyperscience IATI Registry IBM App Connect IESO Incheon Open Data Incredibuild Indian Institute of Technology Delhi Inductive Automation Infinite Athlete Infraspeak Infura Instacart Interpublic Group Ireland Open Data Catalogue Irish Agriculture Open Data Irish Housing Open Data Iron Fish Jakarta EE Jira Jitsi Jotform Juleb Kagi Kalshi Kameleoon Kareo Karlsruhe Institute of Technology Khan Academy Kildare County Council Open Data Kite Klippa Knowde Kontent AI Kozadat Hungary Open Data Kraken Kyoto University Labelbox Lambda Laundryheap Lazio Open Data Lecce Open Data Leeds Data Mill Leipzig Open Data Lightspeed Liguria Open Data Limble CMMS Limerick Open Data Catalogue Lisbon Open Data Liveblocks Livepeer London Datastore Looking Glass Factory Lucidchart Madrid Region Open Data Maggioli Cloud Open Data Magic MagicBell MailerSend Manifold Mantle Network MATLAB May Mobility Maya Medicaid Open Data Mem0 Mendoza Open Data Messina Open Data Microsoft .NET Microsoft Active Directory Microsoft Excel (Advanced) Microsoft Power Apps Microsoft Project Microsoft SQL Server Milvus Milwaukee Open Data MLflow Modena Open Data Montenegro Open Data Montenegro Open Data (data.gov.me) Montevideo Open Data Montpellier Open Data Montréal, Québec Moodle Moralis Morgan Stanley Moxtra mParticle Mural MySQL NameWhisper Naples Open Data NASA Open Data NBCO Open Data NCSE Open Data Neolaiacampus Open Data Neon Neptune.ai Netskope NeverBounce New Relic NextGen Healthcare Nextworld Nexus Repository Manager NGINX Service Mesh NHS API NHS Digital NHS Scotland Open Data Niagara Open Data Nimble Storage Nomic AI Northern Territory Open Data Notice Novell NSW Government Open Data Octopus Energy Official Ukrainian Government Portal Ohio State University Oklahoma Omnea OneTick (OneMarketData) Ontario Data Catalogue Open Data Regione Toscana Open Data Schleswig-Holstein Open Data Trentino Open Development Cambodia Open Development Mekong Open Development Myanmar Open Development Vietnam Open Government Canada open NRW opendata.gov.al (Open Data Albania) opendata.gov.je OpenData.HRO - Portal für offene Data der Hansestadt Rostock opendata.swiss OpenDataNI (Northern Ireland) OpenHands OpenTable OpenVPN OpenX Opolskie Open Data OPOWER OPSI Slovenia Optus Oracle Oracle APEX Oracle Database Oracle NetSuite Oracle Procurement Oracle Retail Oracle Transportation Management OSCAR EMR OSIsoft PI System OutRival Pakistan Open Data Parloa Payload CMS Pega Peking University Pernambuco Open Data Perp pfSense Phidata / Agno Pinata Ping++ PingOne Planhat Pocket Network Pohang University of Science and Technology PointClickCare Polymarket Portal Datos Abiertos Ayuntamiento de Málaga Portal de Dados Abertos da Cidade de São Paulo Portal de Dados Abertos – Prefeitura de Belo Horizonte Portal de Dados Urbanos PPGAU UFF - Open data portal for Urban Resarch Portal de Datos Abiertos Republica Dominicana Portal oficial Ayuntamiento de Rivas Vaciamadrid Portale Dati aperti del Comune di Matera PortSwigger PowerTrade Privy Productboard Proemion ProfitWell propertybase Proscia PTC PTC ThingWorx PubNub Pyth Python Standard Library and Popular Qlik Sense Quandl (Nasdaq Data Link) Queensland Geoscience Data Queensland Government Data QuestDB QuickNode Quorum Software QuoteMedia Rappi RCSB PDB Read AI Real Gift Services Recife City Open Data Red Hat Ansible Automation Platform Redis Redpanda Reown Resy Reverb Rightrev Rimini Open Data Roblox Rockwell Automation Rockwell FactoryTalk Rome Open Data Rondonia Open Data Ronin Network Rossum Sabre Sage Sage Intacct Sage X3 Salesforce Salesforce Service Cloud APIs San Bernardino County ATC OpenData Santa Catarina Open Data SAP Business One SAP BW SAP Concur SAP Fieldglass SAP HANA SAP Integration Suite Satu Data Aceh Satu Data Bencana Indonesia (BNPB) Satu Data Kalimantan Timur Satu Data Semarang Regency Scalar Schoology ScienceLogic Scroll Seated Seldon Sensible Sensu SentinelOne Sepasoft ServiceNow Shelf.io Shift4Shop SIGNL4 SilverStripe SimCorp Dimension SiteMinder Software Engineering Daily Sonora Open Data Sorbonne University South Tyrol Civis Open Data Spatial Hub Scotland Splunk Splunk SOAR Spring Boot Spring WebFlux Sprinto Stack Auth Stack Exchange StepZen Streak SUPER STUDIO Surescripts SurrealDB Syncari Synthflow SYSPRO Tableau takepayments Tally Tatum TAXO Taylor's University Teagasc Open Data Technical University of Berlin Technical University of Darmstadt Tetrate The Graph The Trade Desk ThunderCore TIBCO Tipalti Tock Todoist Together Labs Tokyo Metropolitan Open Data TraceLink Transparency Portal for the City of Karlsruhe, Germany Transport for NSW Open Data Hub Travis CI Treasury Prime Trento Open Data Trieve Trifacta Triplit TU Wien Tulip Interfaces Turin Open Data Turtlemint Tusla Child & Family Agency Open Data Typeform TYPO3 Uber Direct UK Government Open Data Umbria Region Open Data Uncodie (now Makinari) Unifonic Universiti Putra Malaysia University of Aberdeen University of Auckland University of Barcelona University of Basel University of Bath University of Bern University of Bologna Open Data University of Bonn University of Calgary University of Cambridge University of Canterbury University of Cape Town University of Chile University of Freiburg University of Lisbon University of Liverpool University of Los Andes Colombia University of Michigan-Ann Arbor University of Nottingham University of Queensland University of Southern California University of Toronto University of Warsaw University of Wollongong University of Zurich Université de Montréal UPM YODA Open Data Portal Uppsala University US Small Business Administration Open Data Vast.ai Veradigm (Allscripts) Veritas Cluster Server Veritas Volume Manager Versioning Protocols Vert.x Vertafore VictoriaMetrics Vinkius Virginia Open Data Visage Imaging Vitess VMware VWO WalkMe Waseda University Web3Auth Weights and Biases Western Australia Data Catalogue Western University Whatnot Whimsical Wikimapia Wingtra Wix Workday Advanced Compensation Workday Studio Wynsure Xano Yokohama City Open Data You.com Yukon Open Data Zebra Technologies Zep Zilliz Zoho Writer Zomentum Zonos Zulip Zurich Open Data École Normale Supérieure de Lyon

Score breakdown

Frequency

81.5

log-scaled weighted occurrences

Breadth

3.6

spread across providers

Quality lift

45.8

mean composite of providers using it

Cohesion

28.4

strength of nearest seed neighbor

Where this tag comes from

Provider tag137

Api tag960

Openapi tag11

Openapi op tag55

Cohort brief

Auto-generated

The 136 providers in the APIs.io catalog tagged REST, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

136

of 137 on the roster

Mean Kin Score

37.7

+14.8 vs catalog 22.9

Mean Agent Readiness

+13.1 vs catalog 11.9

Spread

0–79.9

median 36.7 · σ 15.1

How the 136 split by band

Exemplar 8Strong 10Developing 36Thin 53Emerging 27Minimal 2

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Contract Quality	38	17.6	+20.4	136
Operational Transparency	30.7	13.7	+17	136
Developer Ergonomics	37.4	23.2	+14.2	136
Access Clarity	39.5	26.5	+13	136
Discoverability	67.1	58.1	+9	136
Contract Governance	11.6	6.3	+5.3	136

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)	24%	14%	+10
MCP server (first-party)	23%	12%	+11
Agent Skills	0%	0%	0
OAuth scopes	17%	11%	+6
Security	99%	98%	+1
Arazzo workflows	4%	2%	+2
Governance rules	42%	14%	+28

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 WSO2 79.9
2 Confluent | the Data Streaming Platform 77.3
3 Svix 76.7
4 Cvent Event Cloud 71.9
5 0xArchive 71.6
6 Amazon API Gateway 70
7 Canvas 68.2
8 Buildkite 68
9 StayingAPI 64.8
10 Benchling 64.5

Work with this as data

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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.

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The distribution (Pro)

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REST

Providers using this tag (136)

APIs with this tag (954)