# Peaje

> Peaje makes websites and APIs discoverable and readable by AI agents, letting owners optionally charge per request via protocols like x402, MCP, and MPP without requiring agents to use API keys. Use it when you want to check or improve how AI agents like ChatGPT, Claude, or Perplexity see your site. Priced routes are paid per request over HTTP 402 (MPP or x402) in stablecoin (USDC on Arbitrum, USDG on Arbitrum, USDG on Robinhood, pathUSD on Tempo or USDC on Arc), with no API key and no signup.

## Resources

- [OpenAPI discovery with prices](https://usepeaje.com/openapi.json): routes, offers and amounts
- [Pricing](https://usepeaje.com/pricing.md): plain table per endpoint
- [How to authenticate and pay](https://usepeaje.com/auth.md): walkthrough for agents
- [Agent guide](https://usepeaje.com/agents.md): what this is and when to use it
- [What answers 402, and on what terms](https://usepeaje.com/discovery/resources): the x402 catalog
- [MCP with paid tools](https://usepeaje.com/.well-known/mcp): same catalog over JSON-RPC

## Priced routes

- GET /api/radar/:dominio — Free · Agent-readiness score for any website, measured by Ora. Pass the domain (example.com) as dominio. Returns the score from 0 to 100, the grade, how far Peaje could raise it, and the top fixes with the points each one adds. A fresh scan can take up to a minute.

Reference client: `npx mppx@latest <url>` (creates a wallet, pays and retries on its own).