Agent Service Store

Paid JSON APIs for AI agents using Circle Gateway Nanopayments / x402.

Endpoints

How payment works

Unpaid requests return 402 Payment Required. x402-compatible buyer agents can sign a gasless USDC nanopayment, retry the request, and receive JSON.

Example unpaid call

curl -i -X POST /v1/travel-itinerary \
  -H "content-type: application/json" \
  -d '{"city":"Istanbul","interests":["walking","food"],"hours":4}'

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