AgentAPI

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name: agentapi description: Browse and search the AgentAPI directory - a curated database of APIs designed for AI agents. Find MCP-compatible APIs for search, AI, communication, databases, payments, and more. Includes free directory access and optional x402 pay-per-use APIs. author: gizmolab version: 1.0.7 tags: [api, mcp, agents, directory, search, integrations, x402] homepage: https://agentapihub.com source: https://github.com/gizmolab/agentapi

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AgentAPI

A curated directory of APIs designed for AI agents. Machine-readable. MCP-compatible. Agent-accessible.

Website: https://agentapihub.com Docs: https://api.agentapihub.com/api/docs

Free Features

The directory and search functionality is completely free:

# Browse all APIs (FREE)
curl https://agentapihub.com/api/v1/apis
Search by capability (FREE)
curl "https://agentapihub.com/api/v1/apis?q=send+email&mcp=true"
Filter by category (FREE)
curl "https://agentapihub.com/api/v1/apis?category=ai"

x402 Pay-Per-Use APIs

Some APIs are available through x402 — a pay-per-use protocol using USDC on Base chain.

Available x402 APIs

| API | Endpoint | Approx. Price | |-----|----------|---------------| | Gemini Chat | /api/gemini/chat/completions | ~$0.001/req | | Gemini Embeddings | /api/gemini/embeddings | ~$0.0005/req |

How x402 Works

1. Call the API endpoint 2. Receive 402 Payment Required with price details 3. Send USDC payment on Base chain 4. Retry request with payment proof 5. Receive API response

⚠️ Important Safety Notice

x402 payments require explicit setup and should not be automated without safeguards:

Wallet required: You must configure a wallet with USDC on Base

User approval recommended: Implement confirmation flows before any payment

Verify recipient: The payment recipient is 0xcCb92A101347406ed140b18C4Ed27276844CD9D7 (gizmolab.eth)

Set spending limits: Configure maximum per-request and daily limits

This skill does not auto-execute payments — it provides documentation only

For implementation details, see: https://api.agentapihub.com/api/docs

Directory Categories

| Category | APIs | Example | |----------|------|---------| | Search | Brave, Serper, Exa, Tavily, Perplexity | Web search with AI summaries | | AI & ML | OpenAI, Claude, Gemini, Groq, Replicate | LLM inference, image gen | | Communication | Resend, Twilio, Slack, Discord, Telegram | Email, SMS, messaging | | Database | Supabase, Pinecone, Qdrant, Neon, Upstash | SQL, vectors, KV store | | Payments | Stripe, Lemon Squeezy, PayPal | Payment processing | | Scraping | Firecrawl, Browserbase, Apify | Web scraping, automation | | Developer | GitHub, Vercel, Linear, Sentry | Code, deploy, issues | | Productivity | Notion, Google Calendar, Todoist | Tasks, scheduling |

MCP-Compatible APIs

All 50+ APIs in the directory are MCP-compatible. Filter with ?mcp=true.

API Response Format

{
  "id": "resend",
  "name": "Resend",
  "description": "Modern email API for developers",
  "category": "communication",
  "provider": "Resend",
  "docs": "https://resend.com/docs",
  "auth": "api_key",
  "pricing": "freemium",
  "pricingDetails": "3,000 free/mo, then $20/mo",
  "rateLimit": "10 req/sec",
  "mcpCompatible": true,
  "x402Enabled": false,
  "tags": ["email", "transactional", "notifications"]
}

Top APIs by Category

Search

Brave Search - Privacy-focused, 2k free/mo

Exa - Neural/semantic search for AI

Tavily - Built specifically for AI agents

AI & ML

OpenAI - GPT-4, DALL-E, Whisper

Anthropic Claude - Best for reasoning/coding

Groq - Fastest inference (500+ tok/sec)

Communication

Resend - Simple email API, 3k free/mo

Twilio - SMS/voice, industry standard

Slack/Discord/Telegram - Team messaging

Database

Supabase - Postgres + auth + storage

Pinecone/Qdrant - Vector DBs for RAG

Upstash - Serverless Redis

Usage Examples

# Find an API for sending emails
Search AgentAPI for "email" → Returns Resend, SendGrid, Twilio
Find vector databases for RAG
Search AgentAPI for "vector embeddings" → Returns Pinecone, Qdrant, Weaviate
Find fast LLM inference
Search AgentAPI for category "ai" + filter by latency → Returns Groq, Gemini Flash

Contributing

Submit new APIs at https://agentapihub.com (Submit API link in footer).

Built By

GizmoLab (@gizmolab_) — gizmolab.io