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The ultimate collection of APIs for building autonomous AI agents - 2,595 production-ready APIs across Agents, AI Models, and MCP Servers.
This repository is designed to feel like a launchpad, not a junk drawer. It is tightly scoped around the API layers that matter most when you are building autonomous systems, copilots, tool-using assistants, and MCP-native workflows.
| Metric | Count |
|---|---|
| Total APIs | 2,595 |
| Categories | 3 |
| Last Updated | 2026-07-07 |
| Focus | Agentic AI infrastructure |
Agents664 APIs Execution layers, orchestration, autonomous task handling, and agent-style workflows. Open Agents Directory |
AI Models1,617 APIs Generation, reasoning, extraction, transformation, and model-powered product building blocks. Open AI Models Directory |
MCP Servers314 APIs Model Context Protocol integrations that connect assistants to real tools, systems, and data. Open MCP Servers Directory |
Agents, AI Models, or MCP Servers.Agents
Best for builders who need APIs that feel closer to execution and autonomy:
AI Models
Best for builders who need intelligence and generation as a reusable service layer:
MCP Servers
Best for builders who want agents to use tools through structured interfaces:
| Autonomous Assistants | AI Copilots | MCP Toolchains | Internal Automation |
| Research Agents | Workflow Engines | Tool-Using LLM Apps | Production AI Features |
This repository intentionally includes only:
Anything outside those three categories has been removed from the tracked repository structure.
$ claude mcp add agentic-ai-apis \
-- python -m otcore.mcp_server <graph>