APIs.io website screenshot

APIs.io

APIs.io is an open-source API search engine and federated discovery network built on the APIs.json specification. It indexes API providers and their individual APIs across the public internet along with the machine-readable artifacts they publish — OpenAPI, AsyncAPI, GraphQL, Arazzo workflows, Postman collections, JSON Schema, JSON-LD contexts, Spectral rulesets, vocabularies, OAuth scopes, plans, rate limits and FinOps profiles — and lets developers and agents search that catalog by keyword, capability, tag, industry, region, artifact type and quality band. As of August 2026 the network published roughly 26,414 providers, 109,100 APIs and 120,595 schemas across 71 industries and 77 curated areas. Every provider is scored with the Kin Score, a 0–100 composite across six weighted facets plus a standalone agent-readiness score. The same read-only OpenAPI 3.1 contract powers three surfaces — a REST API at https://apis.io/api/v1, a Streamable-HTTP MCP server at https://apis.io/mcp, and a set of published Agent Skills — alongside an RFC 9727 api-catalog linkset, an llms.txt and an APIs.json self-description. It is maintained by API Evangelist and serves both API producers submitting profiles and API consumers discovering APIs.

APIs.io publishes 21 APIs on the APIs.io network, including Prices API, Submit API, Areas API, and 18 more. Tagged areas include API Aggregation, API Directory, API Discovery, API Indexing, and API Rating.

The APIs.io catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 2 Spectral governance rulesets.

APIs.io’s developer surface includes authentication, engineering blog, getting-started guide, changelog, release notes, support, sandbox, and 63 more developer resources.

90.1/100 exemplar ▬ flat Agent 75/100 agent native Front door AI 2/6 trace open core · MIT Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
AccessFreemiumSelf serve⚡ Free to try
20 APIs 2 MCP Servers
API AggregationAPI DirectoryAPI DiscoveryAPI IndexingAPI RatingAPI SearchAPIs.jsonSearch EnginesAPI CatalogAgent DiscoveryMCPAgent SkillsOpenAPIAPI GovernanceA2A

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/apis-io: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 21

Individual APIs this provider publishes, each with its own machine-readable definition.

APIs.io Prices API

The per-call price of every metered resource on the APIs.io API, as data. Free, uncredentialed, and the one thing a caller can read before deciding whether to call anything else.

APIs.io Submit API

Discover a domain's machine-readable API surface and submit a provider for review — the Add-API door, documented first-party from the serving Lambda.

APIs.io Areas API

The API Evangelist areas taxonomy — curated topic collections (authentication, webhooks, payments, …), each a scored provider index with its own site. Pro.

APIs.io Artifact Types API

First-class, per-type artifact collections (OpenAPI, AsyncAPI, Arazzo, Postman, JSON Schema, and more). Each path filters and normalizes one artifact type across all providers.

APIs.io Industries API

Industry verticals grouping providers across the catalog.

APIs.io Insights API

Demand-side intelligence — what ~5,800 companies (Fortune 1000 + API providers) build, buy, and hire for around APIs, data, and AI, derived from job postings, press, and enginee...

APIs.io Providers API

Organizations publishing APIs on the network.

APIs.io Ratings API

The APIs.io API rating system — a 0–100 composite score, five bands, a trend marker, and six weighted facets measuring how complete, governed, and integration-ready each provide...

APIs.io Regions API

Geographic regions grouping providers across the catalog.

APIs.io Search API

Search using a cloud search engine.

APIs.io Synthesis API

Decision-grade composites over the catalog — provider comparison, gap analysis, catalog change feed, and recommended-stack design. Pro.

APIs.io Tags API

The tag taxonomy, with network-wide ranking metadata.

APIs.io Cohorts API

Any scored population of providers — a tag, industry, region, area, or VC portfolio — with the distribution, rankings, facet scores, and capability matrix that a Trend or Portfo...

APIs.io Editorial API

Story leads mined from catalog movement (owner tier). 1 operation of the APIs.io API, split out by tag so this surface is documented, rated, and governed on its own.

APIs.io Export API

Bulk dataset pulls of the catalog — ratings and providers as one download (Business tier). 2 operations of the APIs.io API, split out by tag so this surface is documented, rated...

APIs.io Resolve & Enrich API

Agent ergonomics — resolve any identifier (domain, URL, GitHub org) to a provider, and enrich a provider in one call by choosing field groups. 2 operations of the APIs.io API, s...

APIs.io Saved Workspace API

Saved searches and provider lists for a signed-in apis.io API key — save a query, re-run it, and watch what is net-new. 10 operations of the APIs.io API, split out by tag so thi...

APIs.io Venture Capital API

Venture-capital firms as a first-class entity — fund identity plus a network-matched, rated portfolio graph, and the reverse edge from a provider to the VCs that back it. 4 oper...

APIs.io Provider Control API

Claim, correct and improve your own listing. Most operations require the Influence plan; reporting that our data is wrong is free and always will be.

APIs.io Watches API

The Watches API from APIs.io — 0 operation(s) for watches.

APIs.io APIs API

Individual APIs, each owned by a provider and described by artifacts.

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Postman Collections 11

Ready-to-run Postman collections for exercising this provider's APIs.

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Open Collections 12

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

.io Search APIs API

OPEN COLLECTION

.io Search APIs Areas API

OPEN COLLECTION

.io APIs Search API

OPEN COLLECTION

.io Search APIs Tags API

OPEN COLLECTION

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Arazzo Workflows 4

Multi-step API workflows described with the Arazzo specification.

APIs.io Compare Keyword Coverage

Run two keyword searches against APIs.io and compare how many APIs the index holds for each term.

ARAZZO

APIs.io Paginate Search Results

Read the first page of a keyword search, learn the total page count, then fetch a following page of results.

ARAZZO

APIs.io Search APIs by Keyword

Search the APIs.io registry for APIs matching a keyword and branch on whether any results were returned.

ARAZZO

APIs.io Submit and Verify API

Submit a valid APIs.json to the APIs.io index, then search the registry to confirm the submitted API appears.

ARAZZO

MCP Servers 2

Model Context Protocol servers that expose these APIs to AI agents.

APIs.io MCP Server

MCP SERVER

APIs.io MCP Server

Hosted streamable-HTTP endpoint for the APIs.io catalog MCP server. Descriptor and tool inventory: mcp/apis-io-mcp.yml.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Apis Io Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Apis Io Rate Limits

8 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

APIs.io Watch Events

Events APIs.io sends to a provider watching their own listing. Register with `POST /v1/me/watch/{slug}` (Influence), supplying `callback_url` for the signed-webhook delivery des...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Apis Io Context

15 classes · 34 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

APIs.io API Rules

5 rules · 3 warnings 2 info

SPECTRAL

APIs.io API Rules

71 rules · 48 errors 23 warnings

SPECTRAL

JSON Schema 13

Standalone JSON Schema definitions for this provider's data models.

AddAPIsJSON

1 properties

JSON SCHEMA

APIsJSON

11 properties

JSON SCHEMA

APIs

0 properties

JSON SCHEMA

API

9 properties

JSON SCHEMA

Contact

9 properties

JSON SCHEMA

Include

2 properties

JSON SCHEMA

Link

5 properties

JSON SCHEMA

Maintainer

1 properties

JSON SCHEMA

metaInformation

2 properties

JSON SCHEMA

Meta

5 properties

JSON SCHEMA

Property

2 properties

JSON SCHEMA

Search

3 properties

JSON SCHEMA

Tag

0 properties

JSON SCHEMA

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JSON Structure 13

JSON Structure definitions describing this provider's data shapes.

Apis Io Search Add Ap Is Json Structure

1 properties

JSON STRUCTURE

Apis Io Search Ap Is Json Structure

11 properties

JSON STRUCTURE

Apis Io Search Ap Is Structure

0 properties

JSON STRUCTURE

Apis Io Search Api Structure

9 properties

JSON STRUCTURE

Apis Io Search Contact Structure

9 properties

JSON STRUCTURE

Apis Io Search Include Structure

2 properties

JSON STRUCTURE

Apis Io Search Link Structure

5 properties

JSON STRUCTURE

Apis Io Search Maintainer Structure

1 properties

JSON STRUCTURE

Apis Io Search Meta Information Structure

2 properties

JSON STRUCTURE

Apis Io Search Meta Structure

5 properties

JSON STRUCTURE

Apis Io Search Property Structure

2 properties

JSON STRUCTURE

Apis Io Search Search Structure

3 properties

JSON STRUCTURE

Apis Io Search Tag Structure

0 properties

JSON STRUCTURE

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Examples 13

Example request and response payloads for these APIs.

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Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Apis Io Authentication

apiKey/oauth2 · 2 schemes

SECURITY

Apis Io Domain Security

TLSv1.3 · DMARC

SECURITY

Apis Io Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Apis Io Scopes

3 scopes · authorizationCode

3 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Apis Io Agentic Access

276 operations · 47 acting · 12 human-in-the-loop

276 operations · 47 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

Documentation 3

Reference material describing how the API behaves

Agent Surfaces 6

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 13

Pagination, idempotency, versioning, errors, and events

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Build 11

SDKs, sample code, and the tooling you integrate with

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Access & Security 7

Authentication, authorization, and security posture

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Operate 10

Status, limits, changes, and where to get help

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Commercial 8

Pricing, plans, and the legal terms of use

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Company 3

The organization behind the API

Other 4

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: apis-io
name: APIs.io
description: APIs.io is an open-source API search engine and federated discovery network built on the APIs.json specification.
  It indexes API providers and their individual APIs across the public internet along with the machine-readable artifacts
  they publish — OpenAPI, AsyncAPI, GraphQL, Arazzo workflows, Postman collections, JSON Schema, JSON-LD contexts, Spectral
  rulesets, vocabularies, OAuth scopes, plans, rate limits and FinOps profiles — and lets developers and agents search that
  catalog by keyword, capability, tag, industry, region, artifact type and quality band. As of August 2026 the network published
  roughly 26,414 providers, 109,100 APIs and 120,595 schemas across 71 industries and 77 curated areas. Every provider is
  scored with the Kin Score, a 0–100 composite across six weighted facets plus a standalone agent-readiness score. The same
  read-only OpenAPI 3.1 contract powers three surfaces — a REST API at https://apis.io/api/v1, a Streamable-HTTP MCP server
  at https://apis.io/mcp, and a set of published Agent Skills — alongside an RFC 9727 api-catalog linkset, an llms.txt and
  an APIs.json self-description. It is maintained by API Evangelist and serves both API producers submitting profiles and
  API consumers discovering APIs.
type: Index
deliveryModel:
  model: open-core
  license: MIT
  open_source: true
  commercial: true
  callable_host: true
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/apis-io.png
tags:
- API Aggregation
- API Directory
- API Discovery
- API Indexing
- API Rating
- API Search
- APIs.json
- Search Engines
- API Catalog
- Agent Discovery
- MCP
- Agent Skills
- OpenAPI
- API Governance
- A2A
tags_raw:
- API Aggregation
- API Directory
- API Discovery
- API Indexing
- API Rating
- API Search
- APIs.json
- Search Engine
- API Catalog
- Agent Discovery
- MCP
- Agent Skills
- OpenAPI
- API Governance
- A2A
url: https://apis.io/apis.json
created: '2026-03-26'
modified: '2026-09-11'
specificationVersion: '0.23'
apis:
- aid: apis-io:apis-io-prices-api
  name: APIs.io Prices API
  description: The per-call price of every metered resource on the APIs.io API, as data. Free, uncredentialed, and the one
    thing a caller can read before deciding whether to call anything else.
  humanURL: https://apis.io/developer/plans/
  baseURL: https://apis.io/api/v1
  tags:
  - Pricing
  - API Monetization
  properties:
  - type: OpenAPI
    url: openapi/_original/apis-io-v1-prices-openapi.yml
  - type: OpenAPISource
    url: https://apis.io/artifacts/openapi/apis-io-v1-prices-openapi.yml
  - type: Documentation
    url: https://apis.io/developer/plans/
- name: APIs.io Submit API
  description: Discover a domain's machine-readable API surface and submit a provider for review — the Add-API door, documented
    first-party from the serving Lambda.
  humanURL: https://apis.io/add/
  tags:
  - Submissions
  - Discovery
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-submit-api-openapi.yml
- aid: apis-io:apis-io-areas-api
  name: APIs.io Areas API
  description: The API Evangelist areas taxonomy — curated topic collections (authentication, webhooks, payments, …), each
    a scored provider index with its own site. Pro.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Areas
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-areas-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-areas-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-artifact-types-api
  name: APIs.io Artifact Types API
  description: First-class, per-type artifact collections (OpenAPI, AsyncAPI, Arazzo, Postman, JSON Schema, and more). Each
    path filters and normalizes one artifact type across all providers.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Artifact Types
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-artifact-types-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-artifact-types-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-industries-api
  name: APIs.io Industries API
  description: Industry verticals grouping providers across the catalog.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Industries
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-industries-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-industries-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-insights-api
  name: APIs.io Insights API
  description: Demand-side intelligence — what ~5,800 companies (Fortune 1000 + API providers) build, buy, and hire for around
    APIs, data, and AI, derived from job postings, press, and engineering blogs. Discovery is free; per-company depth, gaps,
    and provider matches are Pro.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Insights
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-insights-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-insights-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-providers-api
  name: APIs.io Providers API
  description: Organizations publishing APIs on the network.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Providers
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-providers-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-providers-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-ratings-api
  name: APIs.io Ratings API
  description: The APIs.io API rating system — a 0–100 composite score, five bands, a trend marker, and six weighted facets
    measuring how complete, governed, and integration-ready each provider's public API surface is. Rubric v0.3.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Ratings
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-ratings-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-ratings-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-regions-api
  name: APIs.io Regions API
  description: Geographic regions grouping providers across the catalog.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Regions
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-regions-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-regions-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-search-api
  name: APIs.io Search API
  description: Search using a cloud search engine.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-search-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-search-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-synthesis-api
  name: APIs.io Synthesis API
  description: Decision-grade composites over the catalog — provider comparison, gap analysis, catalog change feed, and recommended-stack
    design. Pro.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Synthesis
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-synthesis-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-synthesis-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-tags-api
  name: APIs.io Tags API
  description: The tag taxonomy, with network-wide ranking metadata.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags:
  - Tags
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-tags-api-openapi.yml
  - type: Overlay
    url: https://apis.io/artifacts/overlays/apis-io-tags-api-overlay.yaml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
- aid: apis-io:apis-io-cohorts-api
  name: APIs.io Cohorts API
  description: Any scored population of providers — a tag, industry, region, area, or VC portfolio — with the distribution,
    rankings, facet scores, and capability matrix that a Trend or Portfolio Report is built from. 7 operations of the APIs.io
    API, split out by tag so this surface is documented, rated, and governed on its own.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags: []
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-cohorts-api-openapi.yml
  - type: SpectralRules
    url: https://apis.io/artifacts/rules/apis-io-spectral-rules.yml
- aid: apis-io:apis-io-editorial-api
  name: APIs.io Editorial API
  description: Story leads mined from catalog movement (owner tier). 1 operation of the APIs.io API, split out by tag so this
    surface is documented, rated, and governed on its own.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags: []
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-editorial-api-openapi.yml
  - type: SpectralRules
    url: https://apis.io/artifacts/rules/apis-io-spectral-rules.yml
- aid: apis-io:apis-io-export-api
  name: APIs.io Export API
  description: Bulk dataset pulls of the catalog — ratings and providers as one download (Business tier). 2 operations of
    the APIs.io API, split out by tag so this surface is documented, rated, and governed on its own.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags: []
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-export-api-openapi.yml
  - type: SpectralRules
    url: https://apis.io/artifacts/rules/apis-io-spectral-rules.yml
- aid: apis-io:apis-io-resolve-enrich-api
  name: APIs.io Resolve & Enrich API
  description: Agent ergonomics — resolve any identifier (domain, URL, GitHub org) to a provider, and enrich a provider in
    one call by choosing field groups. 2 operations of the APIs.io API, split out by tag so this surface is documented, rated,
    and governed on its own.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags: []
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-resolve-enrich-api-openapi.yml
  - type: SpectralRules
    url: https://apis.io/artifacts/rules/apis-io-spectral-rules.yml
- aid: apis-io:apis-io-saved-workspace-api
  name: APIs.io Saved Workspace API
  description: Saved searches and provider lists for a signed-in apis.io API key — save a query, re-run it, and watch what
    is net-new. 10 operations of the APIs.io API, split out by tag so this surface is documented, rated, and governed on its
    own.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags: []
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-saved-workspace-api-openapi.yml
  - type: SpectralRules
    url: https://apis.io/artifacts/rules/apis-io-spectral-rules.yml
- aid: apis-io:apis-io-venture-capital-api
  name: APIs.io Venture Capital API
  description: Venture-capital firms as a first-class entity — fund identity plus a network-matched, rated portfolio graph,
    and the reverse edge from a provider to the VCs that back it. 4 operations of the APIs.io API, split out by tag so this
    surface is documented, rated, and governed on its own.
  humanURL: https://apis.io/developer/overview/
  baseURL: https://apis.io/api/v1
  tags: []
  properties:
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/openapi/apis-io-venture-capital-api-openapi.yml
  - type: SpectralRules
    url: https://apis.io/artifacts/rules/apis-io-spectral-rules.yml
- aid: apis-io:apis-io-provider-control-api
  name: APIs.io Provider Control API
  description: Claim, correct and improve your own listing. Most operations require the Influence plan; reporting that our
    data is wrong is free and always will be.
  humanURL: https://apis.io/add/
  tags:
  - Provider Control
  properties:
  - type: OpenAPI
    url: openapi/apis-io-provider-control-api-openapi.yml
- aid: apis-io:apis-io-watches-api
  name: APIs.io Watches API
  description: The Watches API from APIs.io — 0 operation(s) for watches.
  humanURL: https://apis.io/add/
  tags:
  - Watches
  properties:
  - type: OpenAPI
    url: openapi/apis-io-watches-api-openapi.yml
- aid: apis-io:apis-io-apis-api
  name: APIs.io APIs API
  description: Individual APIs, each owned by a provider and described by artifacts.
  humanURL: https://apis.io/add/
  tags: []
  tags_raw:
  - APIs
  properties:
  - type: OpenAPI
    url: openapi/apis-io-apis-api-openapi.yml
  - type: Documentation
    url: https://apis.io/developer/overview/
  - type: MCPServerCard
    url: https://apis.io/.well-known/mcp/server-card.json
  - type: AgentSkills
    url: https://apis.io/skills/
  - type: AgentSkills
    url: https://apis.io/.well-known/agent-skills/index.json
  - type: PostmanCollection
    url: https://www.postman.com/api-evangelist/apis-io-api-evangelist-engine/collection/hn8xpmd/apis-io-search-api
  - type: Authentication
    url: https://apis.io/developer/authentication/
  - type: RateLimits
    url: https://apis.io/developer/plans/
  - type: ChangeLog
    url: https://apis.io/changelog/
  - type: StatusPage
    url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-search-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/json-schema/apis-io-search-ap-is-json-schema.json
common:
- type: Overlay
  url: https://apis.io/artifacts/overlays/apis-io-apis-api-overlay.yaml
- type: MCPServer
  url: mcp/apis-io-mcp.yml
- type: AsyncAPI
  url: https://apis.io/artifacts/asyncapi/apis-io-watch-events-asyncapi.yml
- type: VulnerabilityDisclosure
  url: security/apis-io-vulnerability-disclosure.yml
- type: OAuthScopes
  url: scopes/apis-io-scopes.yml
- type: IssueTracker
  url: https://github.com/api-evangelist/roadmap/issues
- type: License
  name: CC BY-NC-SA 4.0
  url: https://github.com/api-evangelist/apis-io/blob/main/LICENSE
- type: License
  name: Apache 2.0
  url: https://github.com/api-evangelist/apis-io/blob/main/sdk/LICENSE
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/apisio/overview
- type: AgenticAccess
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/agentic-access/apis-io-agentic-access.yml
- type: DomainSecurity
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/security/apis-io-domain-security.yml
- type: Authentication
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/authentication/apis-io-authentication.yml
- type: Arazzo
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/arazzo/apis-io-compare-keyword-coverage-workflow.yml
  name: APIs.io Compare Keyword Coverage
- type: Arazzo
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/arazzo/apis-io-paginate-search-results-workflow.yml
  name: APIs.io Paginate Search Results
- type: Arazzo
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/arazzo/apis-io-search-apis-workflow.yml
  name: APIs.io Search APIs by Keyword
- type: Arazzo
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/arazzo/apis-io-submit-and-verify-api-workflow.yml
  name: APIs.io Submit and Verify API
- type: Website
  url: https://apis.io
- type: About
  url: https://apis.io/about/
- type: Blog
  url: https://apis.io/blog/
- type: DeveloperPortal
  url: https://apis.io/developer/
- type: GettingStarted
  url: https://apis.io/developer/getting-started/
- type: Authentication
  url: https://apis.io/developer/authentication/
- type: Plans
  url: https://apis.io/developer/plans/
- type: ChangeLog
  url: https://apis.io/changelog/
- type: ReleaseNotes
  url: https://apis.io/changelog/
- type: Versioning
  url: https://apis.io/developer/overview
- type: Support
  url: https://apis.io/support/
- type: TermsOfService
  url: https://apis.io/terms/
- type: PrivacyPolicy
  url: https://apis.io/privacy/
- type: GitHubOrganization
  url: https://github.com/api-search
- type: GitHubRepository
  url: https://github.com/api-evangelist/apis-io
- type: SpectralRules
  url: https://apis.io/artifacts/rules/apis-io-spectral-rules.yml
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/vocabulary/apis-io-vocabulary.yaml
- type: WellKnown
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/well-known/apis-io-well-known.yml
- type: APICatalog
  url: https://apis.io/.well-known/api-catalog
- type: MCPServer
  url: https://apis.io/mcp
  name: APIs.io MCP Server
  description: 'Hosted streamable-HTTP endpoint for the APIs.io catalog MCP server. Descriptor and tool inventory: mcp/apis-io-mcp.yml.'
- type: ToolCrosswalk
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/mcp/apis-io-tool-crosswalk.yml
- type: LLMsTxt
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/llms/apis-io-llms.txt
- type: AgentSkill
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/skills/_index.yml
- type: Conformance
  url: https://apis.io/artifacts/conformance/apis-io-conformance.yml
- type: ErrorCatalog
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/errors/apis-io-problem-types.yml
- type: Lifecycle
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/lifecycle/apis-io-lifecycle.yml
- type: StatusPage
  url: https://www.postman.com/api-evangelist/apis-io/monitor/APIs-io-Search---Status~1ef6bc29-9da9-4040-b98b-cef03be1155e
- type: Conventions
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/conventions/apis-io-conventions.yml
- type: ChangeLog
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/changelog/apis-io-changelog.yml
  title: Changelog artifact
- type: DataModel
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/data-model/apis-io-data-model.yml
- type: Sandbox
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/sandbox/apis-io-sandbox.yml
- type: Console
  url: https://apis.io/developer/api/
- type: Documentation
  url: https://apis.io/developer/
- type: APIReference
  url: https://apis.io/developer/api/
- type: Pricing
  url: https://apis.io/developer/plans/
- type: SignUp
  url: https://apis.io/developer/account
- type: RateLimits
  url: https://apis.io/developer/rate-limits
- type: Deprecation
  url: https://apis.io/developer/deprecation
- type: Security
  url: https://apis.io/developer/security
- type: SecurityTxt
  url: https://apis.io/.well-known/security.txt
- type: Packages
  url: packages/apis-io-packages.yml
- type: Idempotency
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/conventions/apis-io-conventions.yml
- type: AgentCard
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/a2a/apis-io-a2a.yml
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/examples/apis-io-search-api-example.json
- type: Plans
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/plans/apis-io-plans-pricing.yml
- type: RateLimits
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/rate-limits/apis-io-rate-limits.yml
- type: FinOps
  url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/finops/apis-io-finops.yml
- type: OpenIDConnect
  url: https://apis.io/.well-known/openid-configuration
- type: GitHubRepository
  url: https://github.com/api-search/agent-skills
- type: Python SDK
  url: https://github.com/api-evangelist/apis-io/tree/main/sdk/python
- type: CLI
  url: https://github.com/api-evangelist/apis-io/tree/main/sdk/python#the-command-line
- type: JavaScript SDK
  url: https://github.com/api-evangelist/apis-io/tree/main/sdk/javascript
- type: Go SDK
  url: https://github.com/api-evangelist/apis-io/tree/main/sdk/go
- type: Contact
  url: mailto:info@apis.io
maintainers:


# --- truncated at 32 KB (32 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/apis.yml

Work with this as data

Every provider 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 providers

9 MCP tools reach this
  • find_providersBrowse and filter every provider in the catalog.
  • get_provider_artifactsEvery artifact this provider publishes, grouped by type.
  • get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
  • get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
  • get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
  • get_provider_ratingPRO — composite, band, trend and facet scores.
  • 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 provider
curl "https://apis.io/api/v1/providers/apis-io"
All providers
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose
curl "https://apis.io/api/v1/providers/apis-io/operations?limit=25"
How their score was established
curl "https://apis.io/api/v1/providers/apis-io/evidence"

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

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