How is this different from an OpenAI API key?

There is no key to provision, rotate, or leak. The agent pays per call in USDC over x402; the gateway holds the upstream account.

Does it work with MCP clients?

Yes. An MCP server at /mcp/rpc exposes the tools; add it to any MCP client and it can call them with a prepaid session.

An LLM gateway for AI agents that pay per call

OpenAI-compatible and MCP-native. Your agent gets an LLM by paying per call in USDC — no key to provision, rotate, or leak.

An autonomous agent with a wallet shouldn't need a human to go create an LLM API key for it. scrape402 is an x402 gateway that lets an agent pay per inference call in USDC on Base. It speaks two protocols agents already use:

OpenAI-compatible HTTP

A drop-in POST /v1/chat/completions — point any OpenAI SDK at it, no account needed. The model field routes to fast or large tiers.

Native MCP tools

A Model Context Protocol server at /mcp/rpc exposes chat and live data as MCP tools an agent can discover and call, paying from a prepaid session. Add it to any MCP client and the tools appear.

Try one call free

curl -X POST https://x402.shizu.me/v1/free \
  -H "Content-Type: application/json" \
  -d '{"messages":[{"role":"user","content":"hello"}]}'

No wallet needed for the first call — see it work, then wire up x402 payment for unlimited pay-per-call access.

Try one call free →