Public APIs

Public APIs is a community-curated collective list of over 1,400 free APIs organized across 50+ categories, maintained by contributors and the team at APILayer. It is one of the most popular open-source projects on GitHub with over 400k stars. A companion REST API (davemachado/public-api) exposes the directory data programmatically over HTTPS with no authentication.

Public APIs publishes 3 APIs on the APIs.io network: Categories API, Entries API, and Health API. Tagged areas include API Aggregation, API Directory, API Discovery, Free APIs, and Open-Source.

📡 Source on GitHub

20.4/100 emerging ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessFreemiumOpen⚡ Free to try

1 APIs

API Aggregation API Directory API DiscoveryFree APIsOpen-Source

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 20.4/100 · emerging

Contract Quality 11.2 / 25

Developer Ergonomics 1.9 / 20

Access Clarity 0.0 / 20

Operational Transparency 1.4 / 13

Contract Governance 0.0 / 12

Discoverability 5.9 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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/public-apis: 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 4

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

Public APIs Directory

A collective list of free APIs organized by category including Animals, Finance, Weather, Geocoding, Government, Health, Machine Learning, Sports, and 40+ more categories for de...

Public APIs Categories API

Endpoints for category metadata.

Public APIs Entries API

Endpoints for listing API directory entries.

Public APIs Health API

Service health check.

Open Collections 5

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

API Collection

OPEN COLLECTION

Public APIs Categories API

OPEN COLLECTION

Public APIs Categories Entries API

OPEN COLLECTION

Public APIs Categories Health API

OPEN COLLECTION

Public APIs API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Public Apis Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Public Apis Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Public Apis Finops

FINOPS

Agentic Access 1

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

Public Apis Agentic Access

4 operations

4 operations · 0 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Contributing Guide

Contributing Guide

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Operate 1

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: public-apis
name: Public APIs
description: Public APIs is a community-curated collective list of over 1,400 free APIs organized across 50+ categories, maintained
  by contributors and the team at APILayer. It is one of the most popular open-source projects on GitHub with over 400k stars.
  A companion REST API (davemachado/public-api) exposes the directory data programmatically over HTTPS with no authentication.
type: Index
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Freemium · Open access
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/public-apis.png
tags:
- API Aggregation
- API Directory
- API Discovery
- Free APIs
- Open-Source
tags_raw:
- API Aggregation
- API Directory
- API Discovery
- Free APIs
- Open Source
url: https://raw.githubusercontent.com/api-evangelist/public-apis/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: public-apis:public-apis-directory
  name: Public APIs Directory
  description: A collective list of free APIs organized by category including Animals, Finance, Weather, Geocoding, Government,
    Health, Machine Learning, Sports, and 40+ more categories for developers to discover and integrate into their projects.
  humanURL: https://github.com/public-apis/public-apis
  tags:
  - API Directory
  - Free APIs
  - Open-Source
  - REST APIs
  tags_raw:
  - API Directory
  - Free APIs
  - Open Source
  - REST APIs
  properties:
  - type: Documentation
    url: https://github.com/public-apis/public-apis#index
  - type: GitHubRepository
    url: https://github.com/public-apis/public-apis
- aid: public-apis:public-apis-categories-api
  name: Public APIs Categories API
  description: Endpoints for category metadata.
  humanURL: https://github.com/public-apis/public-apis
  baseURL: https://api.publicapis.org
  tags:
  - Categories
  properties:
  - type: OpenAPI
    url: openapi/public-apis-categories-api-openapi.yml
  - type: Documentation
    url: https://github.com/davemachado/public-api
  - type: GitHubRepository
    url: https://github.com/davemachado/public-api
- aid: public-apis:public-apis-entries-api
  name: Public APIs Entries API
  description: Endpoints for listing API directory entries.
  humanURL: https://github.com/public-apis/public-apis
  baseURL: https://api.publicapis.org
  tags:
  - Entries
  properties:
  - type: OpenAPI
    url: openapi/public-apis-entries-api-openapi.yml
  - type: Documentation
    url: https://github.com/davemachado/public-api
  - type: GitHubRepository
    url: https://github.com/davemachado/public-api
- aid: public-apis:public-apis-health-api
  name: Public APIs Health API
  description: Service health check.
  humanURL: https://github.com/public-apis/public-apis
  baseURL: https://api.publicapis.org
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/public-apis-health-api-openapi.yml
  - type: Documentation
    url: https://github.com/davemachado/public-api
  - type: GitHubRepository
    url: https://github.com/davemachado/public-api
common:
- type: IssueTracker
  url: https://github.com/public-apis/public-apis/issues
- type: ContributionGuide
  url: https://github.com/public-apis/public-apis/blob/master/CONTRIBUTING.md
- type: AgenticAccess
  url: agentic-access/public-apis-agentic-access.yml
- type: Website
  url: https://github.com/public-apis/public-apis
- type: GitHubOrganization
  url: https://github.com/public-apis
- type: Contributing Guide
  url: https://github.com/public-apis/public-apis/blob/master/CONTRIBUTING.md
- type: License
  url: https://github.com/public-apis/public-apis/blob/master/LICENSE
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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/public-apis"

All providers

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

Every operation they expose

curl "https://apis.io/api/v1/providers/public-apis/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/public-apis/evidence"

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

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.