Public APIs website screenshot

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.

🌐 Visit website 📡 Source on GitHub
32.9/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumOpen⚡ Free to try
4 APIs
API AggregationAPI DirectoryAPI DiscoveryFree APIsOpen Source

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 32.9/100 · thin
Contract Quality 13.8 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 6.5 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 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 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. 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. Want it done for you? Prioritized profiling — $2,500 →

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 1

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

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 1

Reference material describing how the API behaves

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

Commercial 1

Pricing, plans, and the legal terms of use

License
License

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
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
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
url: https://raw.githubusercontent.com/api-evangelist/public-apis/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-05-19'
specificationVersion: '0.19'
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
  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: 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