Discovery

Every merchant publishes offers at /m/{slug}/openapi.json: an OpenAPI 3.1 document where each paid route carries x-payment-info.offers[] entries: amount, currency contract, network, and recipient. Agents can price a call before making it.

Aggregate index

The marketplace aggregates all merchants into a single crawlable index. The root of the machine domain serves the aggregate discovery document:

curl https://api.meshgateway.co/openapi.json

This is the surface that registries such as mppscan index.

Per-merchant document

curl https://api.meshgateway.co/m/acme/openapi.json

Each paid route lists its offers:

{
  "x-payment-info": {
    "offers": [
      {
        "amount": "0.01",
        "currency": "0x…",
        "network": "base",
        "recipient": "0x…"
      }
    ]
  }
}