One guide as source markdown

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x76e69B782A6ad5d0D68CB8e47C42A4c00E42B84E",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 120
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "pathParams": {
          "slug": "aheloy-bulgaria-guide"
        },
        "queryParams": {
          "locale": "de"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "category": "money",
          "content": "# Opening a Bank Account in Bulgaria as a Foreigner\n\n## What the bank asks for\n...",
          "contentUpdatedAt": "2026-08-22T00:00:00.000Z",
          "excerpt": "What Bulgarian banks actually ask a foreigner for in 2026, which ones open an account without a personal number, and what each step costs.",
          "locale": "en",
          "slug": "opening-bank-account-bulgaria",
          "sources": [
            "https://www.bnb.bg/"
          ],
          "title": "Opening a Bank Account in Bulgaria as a Foreigner (2026)"
        },
        "type": "json"
      }
    },
    "routeTemplate": "/api/agent/corpus/:slug",
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "pathParams": {
              "additionalProperties": false,
              "properties": {
                "slug": {
                  "description": "Guide slug. The free manifest at /api/agent/manifest lists every one.",
                  "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$",
                  "type": "string"
                }
              },
              "required": [
                "slug"
              ],
              "type": "object"
            },
            "queryParams": {
              "additionalProperties": false,
              "properties": {
                "locale": {
                  "description": "Curated human translation to return. Omit for the English original. A locale with no row for that slug is a 404, not a fallback to English.",
                  "enum": [
                    "en",
                    "de",
                    "ru",
                    "es",
                    "bg",
                    "he"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://melssa.com/api/agent/corpus/:slug"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://melssa.com/api/agent/corpus/:slug");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://melssa.com/api/agent/corpus/:slug")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header