api-directory

This GitHub repo is a powerhouse collection of APIs you can start using immediately to build everything from simple automations to full-scale applications. One of the most valuable API lists on GitHub—period. 💪

📜 A collective list of public GraphQL APIs

🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format

660+ muapi-hosted generative-media models plus community-submitted third-party API tools (SEO, enrichment, social, scraping) — one YAML file per entry, browsable by capability.

The ultimate collection of APIs for building autonomous AI agents — 2,036 production-ready APIs across Agents, AI Models, and MCP Servers. Stop wasting weeks building infrastructure. Plug these in and ship your agent today.

Directory of OpenAPI specifications for thousands of public APIs. Every API is machine-readable and scored for AI agents. CC0.

The World's Most Comprehensive, Authoritative, and Structured Open Source Data Source Knowledge Base

An unofficial, categorized directory of 118 CoreClaw Worker APIs for web scraping, automation, lead generation, e-commerce, social data, and more.

A massive, auto-updated directory of more than 75,000 public APIs for developers, covering AI, data, authentication, finance, maps, weather, analytics, and thousands of integration-ready endpoints. The list updates automatically and keeps expanding, giving developers the largest and most up-to-date API resource in one place. 🚀

Public APIs — independent third-party profile of a public API surface, by API Evangelist. 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.

Verified catalog of 300+ APIs and MCP servers with opinions and statistics so that AI agents can call after a one-time API key/OAuth setup. JSON, llms.txt and an MCP server for agents.

Apivault — independent third-party profile of a public API surface, by API Evangelist. Apivault is an open-source directory and gateway for discovering public APIs. The platform catalogs thousands of free and public APIs across 51 categories including animals, anime, blockchain, cryptocurrency, finance, health, music, news, and weather, enabling de

Persian-first, machine-readable directory of free LLM APIs with quotas, OpenAI compatibility, official sources, and Iran-access evidence.

A source-linked directory of free and trial LLM APIs, multimodal models, embeddings, speech, translation, safety, and other inference endpoints. Companion catalog for freellmapi.io.

Public source-backed Arab-world agent skills: APIs, marketing, sales, support, localization, Arabic NLP, open data, and MENA workflows.

A curated list of the best APIs for AI agents, scored by the Jentic API AI-Readiness Framework. Every entry links to a standardised OpenAPI spec.

Curated directory of best API repos, guides & resources for developers

⭐ A curated collection of AI APIs that provide free credits, free tiers, or developer trials. Perfect for developers, startups, indie hackers, and AI builders to experiment and build AI-powered applications.

APIs.io — independent third-party profile of a public API surface, by API Evangelist. APIs.io is an open source API search engine and directory that uses APIs.json files to discover, index, and catalog APIs across the web. Built on the APIs.json specification, it provides a searchable entry point for developers to find public APIs by keyword, resou

Nexus-AGI — a public AGI service directory & API registry for autonomous agents. Supports .well-known autodiscovery, OpenAPI schemas, and integration with AI models, tools, and services.