agentapi

# 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**:

```bash
# 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 | E...