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 8 Complete, well-documented, and agent-ready

Xquik Docs MCP ServerRead-only hosted MCP server for searching Xquik documentation.87.6 Veeva Vault MCPVeeva ships two first-party Model Context Protocol servers. The Vault Documentation MCP at https://docs.vee...75.6 Redocly RealmRedocly Realm is the comprehensive API lifecycle management platform that unifies Redoc, Revel, and Reef in...74.6 Redocly RedocRedoc is the open-source engine that renders API reference documentation from OpenAPI definitions with a th...74.6 Redocly ReuniteRedocly Reunite is the Git-connected collaboration and deployment surface for Realm. It prepares, deploys, ...74.6 Redocly RevelRedocly Revel is the external developer hub product. It renders Markdown, Markdoc, and React pages with mul...74.6 PostmanPostman is the single platform for collaborative API development used by 35+ million developers. It covers ...72.5 Service Cloud Knowledge APIKnowledge article management — article versions, categories, publishing states and the knowledgeManagement ...68.6

Strong 27 Solid coverage with minor gaps

Developing 39 Usable, with meaningful gaps to close

Ballerina Docs APIRetrieve the complete generated API documentation model for one published package version — every module, c...53.6 Speakeasy DocsMDGenerate beautiful API documentation from OpenAPI specs. Automatic synchronization keeps docs current with ...53.3 Tiger Docs MCP ServerA publicly reachable, anonymous Model Context Protocol server (server name pg-aiguide) serving hybrid seman...53.3 Zeroheight APIThe zeroheight REST API automates design system workflows: read styleguides, their categories, pages and pa...52.9 Optus Documentation APIThe documentation API from Optus — 1 operation(s) for documentation.52.6 Språkbanken Text Metadata API v3The catalogue over everything Språkbanken Text publishes — corpora, lexicons, models, analyses, utilities a...52.6 SIMBA Blocks Documentation MCP ServerA live, unauthenticated remote Model Context Protocol server published on SIMBA's own documentation host. t...52.3 Constructor Documentation MCP ServerRemote, anonymously reachable Model Context Protocol server published by Constructor that exposes documenta...52.2 Emotive Knowledge Base MCP ServerAnonymous remote MCP server published by Emotive's Mintlify knowledge base. Three tools — documentation sea...52.1 Semble Clinical APIGraphQL surface for clinical documentation and care pathways — consultations, clinical pathways, clinical r...51.9 BNSF Waybill Management APIThe BNSF Waybill Management API submits a bill of lading with the required transit information to create a ...50.8 Kantata OX Developer Documentation AgentAgent surface published on the Kantata developer portal. Serves an A2A agent card at /.well-known/agent-car...50.5 ABBYY Documentation MCP ServerHosted, unauthenticated Model Context Protocol server over the public ABBYY documentation corpus. Exposes s...50.3 Scalar API ReferencesScalar API References renders modern, interactive API documentation from OpenAPI and Swagger specifications...49.4 Scalar DocsScalar Docs enables teams to create and publish developer documentation that stays in sync with their API a...49.4 MintlifyMintlify is a developer documentation platform that helps product and engineering teams create, maintain, a...49.1 Quadratic Documentation APIOpenAPI spec and Scalar viewer.49.0 Google Flutter Documentation APIPackage documentation endpoints48.2 Dimension Labs Documentation MCPModel Context Protocol endpoint served from the Dimension Labs documentation host. Answers JSON-RPC 2.0; to...48.1 Figment Documentation MCP ServerHosted Model Context Protocol server served from Figment's own documentation host at docs.figment.io/mcp, e...47.7 Xentral Documentation APIGet documentation about our data catalog, tables and columns.45.8 Artlist Developer Docs MCP ServerHosted Model Context Protocol server for the Artlist Enterprise API documentation. Exposes a single anonymo...44.9 Dash Docs MCP ServerA remote Model Context Protocol server published by Plotly that lets AI agents search and read the Dash doc...44.7 Umbra Canopy Documentation MCP ServerAnonymous, hosted Model Context Protocol server published by Umbra on the Canopy documentation host. Expose...44.2 Sideko Documentation APIPublish and manage API documentation sites generated from OpenAPI specifications, including on-brand themes...43.9 AlayaCare Forms APIThe Forms API from AlayaCare — 1 operation(s) for forms.43.6 Trellix API ExplorerInteractive API documentation and testing tool for Trellix security products formerly under the FireEye bra...43.6 Yahoo Developer Network (legacy documentation for the AOL identity stack)AOL runs no developer portal of its own. App registration and the human documentation for the OAuth 2.0 / O...43.6 API BlueprintAPI Blueprint is a high-level API design language created by Apiary for designing and documenting web APIs....43.2 Apiary APIThe Apiary API provides programmatic access to manage API projects, documentation, and team collaboration. ...43.2 AlgoSeek Documentation APIThe Documentation API from AlgoSeek — 5 operation(s) for documentation.42.7 Happyrobot Docs MCP ServerA hosted documentation-search MCP server on the docs host, discovered via RFC 9728 protected-resource metad...42.3 Nhost documentation APIAPI documentation42.3 Keboola Documentation APIThe Documentation API from Keboola — 9 operation(s) for documentation.42.1 RapidAPI Documentation APIEndpoints for generating and managing API documentation from project definitions and endpoint configurations.41.9 DreamFactory System APIThe DreamFactory System API provides administrative management capabilities for DreamFactory instances. It ...41.8 CHAOSS Metrics CatalogThe CHAOSS Metrics catalog is a community-maintained, structured reference of community-health metrics orga...40.8 GroundTruth Documentation MCP ServerModel Context Protocol endpoint served on the GroundTruth developer documentation host. It answers MCP JSON...40.5 Hex.pm Documentation APIHexDocs package documentation.39.7

Thin 35 Limited public surface area

Opus Docs MCP ServerA first-party remote MCP server over the Opus developer documentation, reachable anonymously at https://dev...39.2 FernFern transforms a single API source of truth (OpenAPI, AsyncAPI, Protobuf, OpenRPC, or the Fern Definition ...38.7 HAMi Website Discovery APIThe machine-readable discovery surface of the HAMi documentation website, described by a first-party OpenAP...38.5 CNH Developer PortalThe CNH Developer Portal at develop.cnh.com hosts onboarding, authentication guidance, API guides, Postman ...38.3 Superscale Documentation MCP ServerAn anonymous Model Context Protocol server served from Superscale's own documentation host, providing searc...38.3 Kinetica Docs MCP ServerRead-only Model Context Protocol server over the published Kinetica documentation site, advertised from htt...37.6 FTC Developer PortalThe FTC Developer Portal is the central hub for developer documentation, data dictionaries, and access prog...37.3 ReadMe API (v2)The current ReadMe API for managing your project programmatically — API keys, API definitions, reference/gu...37.2 Ambassador Edge Stack Developer PortalThe Ambassador Edge Stack Developer Portal automatically detects and publishes API documentation, serving a...36.7 man.sr.ht GraphQL APIGraphQL API for creating and managing wiki and manual pages hosted on SourceHut using git-backed Markdown c...35.9 Acelab Documentation MCP ServerA remote, anonymously reachable Model Context Protocol server serving search and retrieval over Acelab's pu...35.5 University of Calgary Research Computing Services Wiki APIRCSWiki, the documentation platform for University of Calgary Advanced Research Computing, runs MediaWiki 1...35.4 2X Documentation APIThe documentation API from 2X — 1 operation(s) for documentation.34.7 Dead Drop Documentation APIThe Documentation API from Dead Drop — 2 operation(s) for documentation.34.2 Context7 CLIThe Context7 CLI (ctx7) is a command-line tool for querying the Context7 index from the terminal. It provid...33.5 OSPO GuidesA comprehensive collection of 23+ practitioner guides covering all aspects of running Open Source Program O...33.0 Quantum Art Documentation APIThe Documentation API from Quantum Art — 1 operation(s) for documentation.33.0 NJU e-Science Document Service APIThe e-Science Center's documentation platform (a BookStack deployment) publishes a complete public REST API...32.6 what3words API Docs and OpenAPI RepositoryPublic repository hosting the OpenAPI specification, LLM files, and reference material for the what3words P...32.4 Princess Beef Heavy IndustriesAt Princess Beef Heavy Industries (or as we call it pb33f), we build beautifully designed heavy-duty and en...32.2 Library subject and research guides (Springshare LibGuides)Trinity Library's LibGuides tenancy at libguides.tcd.ie, the published documentation surface for TARA and f...32.1 Semgrep DocumentationSource for the Semgrep product documentation site, including CLI reference, rule-writing guides, AppSec Pla...31.8 Zudoku Configuration APIZudoku is an open-source, developer-first API documentation framework built by Zuplo. It uses a file-based ...31.6 The Root Network Documentation MCP ServerRemote, unauthenticated Model Context Protocol server on the documentation host exposing three tools — docu...31.3 Soothe Help Center MirrorThe auto-generated OpenAPI 3.1.0 schema published by the FastAPI application Soothe runs at help.soothe.com...31.2 Swagger UISwagger UI renders OpenAPI specifications as interactive API documentation, allowing developers to explore ...30.1 Isometric MCP ServerIsometric ships a hosted Model Context Protocol (MCP) server that makes the Isometric Standard, proprietary...29.7 Stainless Docs PlatformThe Stainless Docs Platform combines your API reference, usage examples, and narrative guides into a single...29.4 Apocrita — Queen Mary Research Computing ServiceApocrita is Queen Mary's own high-performance computing cluster, run by ITS Research, and its documentation...28.8 AUB Libraries LibGuides (Springshare)AUB Libraries runs a Springshare LibGuides estate at aub.edu.lb.libguides.com under site_id 4901 — the guid...28.0 SlateSlate is an open-source static site generator for creating beautiful, three-panel API documentation from Ma...27.8 Open Explorer MCP ServerHorizon Robotics' hosted Model Context Protocol server for the OpenExplorer toolchain. Probed anonymously o...27.5 ReDocReDoc is an open-source API documentation renderer for OpenAPI specifications, originally created by Rebill...27.1 FumadocsFumadocs is an open-source documentation framework built on Next.js and React for creating fast, modern dev...26.5 Helium Documentation RepositorySource repository for docs.helium.com, covering the Mobile and IoT networks, tokens, wallets, and network-d...26.4

Emerging 26 Early or largely undocumented

Aerospike Documentation APIBuilt-in interactive documentation and OpenAPI specification25.7 BookStack REST APIThe BookStack REST API provides programmatic access to manage the full content hierarchy of a BookStack ins...25.0 Handlebars.jsHandlebars provides the power necessary to let you build semantic templates effectively with no frustration...23.9 DocusaurusDocusaurus is an open-source static site generator for documentation sites with React, MDX, versioning, i18...23.8 VacuumVacuum is the world's fastest OpenAPI linter written in Go. It processes API specifications at lightning sp...23.6 NextraNextra is the core Next.js plugin and library that provides MDX compilation, file-system page mapping, stat...23.5 Nextra Blog ThemeThe Nextra Blog Theme (`nextra-theme-blog`) provides a minimal, clean blog layout built on Nextra. It suppo...23.5 Nextra Docs ThemeThe Nextra Docs Theme (`nextra-theme-docs`) is a full-featured documentation theme built on top of the Next...23.5 AfterQuery Experts Help Center MCPA read-only Model Context Protocol server over the AfterQuery Experts Help Center, served anonymously from ...22.8 Cardless Docs MCP ServerA remote Model Context Protocol server published by Cardless at docs.cardless.com/mcp (Mintlify-hosted). It...22.1 Monash eResearch Documentation (M3 / MASSIVE)Public documentation for the compute, storage, application and training services Monash eResearch runs, inc...21.5 ApiNotesApiNotes generates interactive REST API documentation from OpenAPI or Swagger specifications with live endp...20.7 VitePress Runtime APIThe VitePress Runtime API provides Vue composition functions and helper utilities for use in custom themes,...20.5 VitePress Site ConfigurationThe VitePress site configuration system exported from .vitepress/config.[js|ts]. Defines all settings contr...20.5 Konfig SDK Generation Platform (Sunset)Konfig's developer platform for generating, validating, and publishing SDKs, API reference documentation, a...20.4 ExplainShell APIAPI for parsing and explaining shell commands in natural language.18.8 Carepatron Notes and Documentation API (Modeled)Modeled product-area API for clinical notes, forms, intakes, templates, and AI-assisted documentation (the ...18.0 Booking APIsSuite of pre-booking, booking, and post-booking APIs covering rate requests, booking creation, amendments, ...17.7 DapperDoxDapperDox is an open-source API documentation generator that renders beautiful, customizable reference docs...17.3 Tempo DocumentationOfficial documentation for using Tempo - prompts and generation, working with the canvas, code editing, int...17.3 Rafay Product DocumentationRafay product documentation hub covering Kubernetes Operations Platform, MLOps, GPU PaaS, AI workloads, Tok...17.2 Almanac APIAlmanac API V1 (private beta) for programmatic access to an Almanac workspace — import and move files and f...16.1 OpenAPI SpecificationThe OpenAPI Specification (OAS) defines a standard, language-agnostic interface for HTTP APIs. OpenAPI 3.x ...15.5 TherapyNotes Clinical Documentation API (Modeled)Modeled capability area for interactive clinical note templates - intake, progress notes, treatment plans, ...14.1 DocsifyDocsify is a lightweight, no-build documentation site generator that turns Markdown files into a website on...12.2 JoggrJoggr is a documentation platform purpose-built for software teams, helping engineering teams create and ma...11.5

Companies reaching this through an API (96)

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

2X ABBYY Acelab Aerospike AfterQuery AlayaCare AlgoSeek Amazon API Gateway Ambassador American University of Beirut AOL AppliedAI (AAICO) Archbee Artlist Autodesk Backstage Ballerina BNSF BudgetPixel Cardless Carepatron CHAOSS CNH Constructor.io Criteo Dashbot Dead Drop Decart Dotdigital EGYM emnify Emotive Episode Six Federal Trade Commission FieldPulse Figment Futureverse GitLab Google Flutter GroundTruth HAMi Happyrobot Helium Network Hex.pm Hootsuite Horizon Robotics iDenfy Isometric Keboola Kinetica

Show all 96 companies ↓

Knownwell Konfig Maersk Mavenlink Medusa Monash University Nanjing University Nhost Optus Plotly Postman Quadratic Quantum Art Queen Mary University of London Rafay Product Documentation RapidAPI Redocly RESTful Salesforce Service Cloud APIs Scalar Seekr Semble Semgrep Shell Scripting SIMBA Chain Smartlead Soothe SourceHut Superscale Swagger Codegen Tempo Labs TherapyNotes Timescale TODO Group Trellix Trinity College Dublin Umbra University of Calgary University of California, San Diego University of Gothenburg University of Wisconsin-Madison Veeva what3words Windmill Xentral Xquik

Score breakdown

Frequency

64.5

log-scaled weighted occurrences

Breadth

2.4

spread across providers

Quality lift

35.7

mean composite of providers using it

Cohesion

10.5

strength of nearest seed neighbor

Where this tag comes from

Api tag135

Provider tag86

Openapi tag21

Openapi op tag49

Cohort brief

Auto-generated

The 79 providers in the APIs.io catalog tagged Documentation, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

all scored

Mean Kin Score

33.4

+9.5 vs catalog 23.9

Mean Agent Readiness

18.3

+6.3 vs catalog 12

Spread

5–67.8

median 32.5 · σ 13.8

How the 79 split by band

Exemplar 1Strong 3Developing 25Thin 24Emerging 23Minimal 3

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Contract Quality	37.4	19.8	+17.6	79
Operational Transparency	23.4	14	+9.4	79
Developer Ergonomics	32.2	23.4	+8.8	79
Access Clarity	32.8	26.5	+6.3	79
Contract Governance	12.6	6.4	+6.2	79
Discoverability	64.4	61.2	+3.2	79

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)	14%	10%	+4
MCP server (first-party)	18%	13%	+5
Agent Skills	0%	0%	0
OAuth scopes	11%	11%	0
Security	98%	97%	+1
Arazzo workflows	6%	2%	+4
Governance rules	57%	14%	+43

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 Confluence 67.8
2 Hashnode 57.8
3 DeveloperHub 56.1
4 Treblle 55.8
5 CompanyCam 53.4
6 Speakeasy 53.3
7 Zeroheight 52.9
8 Apidog 52.5
9 Scribe 51.2
10 Elium 50.8

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.

All 92 tools →

Call it yourself

curl for this page

This tag

curl "https://apis.io/api/v1/tags/documentation"

All tags

curl "https://apis.io/api/v1/tags?limit=25"

As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/documentation"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/documentation/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

Discovery needs no key. Ratings and market analysis are Pro.

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Documentation

Providers using this tag (86)

APIs with this tag (135)