Current price, market cap, and 24h change for a single cryptocurrency by symbol or name (C

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "coin": "bitcoin",
          "vs_currency": "usd"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "cached": false,
          "change_24h_pct": 1.85,
          "coin_id": "bitcoin",
          "market_cap": 1327000000000,
          "price": 67250,
          "query": "bitcoin",
          "source": "CoinGecko",
          "vs_currency": "usd"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {
                "coin": {
                  "description": "Cryptocurrency symbol or name, e.g. 'bitcoin', 'btc', or 'ethereum'.",
                  "type": "string"
                },
                "vs_currency": {
                  "description": "Quote currency code, e.g. 'usd'. Defaults to usd if omitted.",
                  "type": "string"
                }
              },
              "required": [
                "coin"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "cached": {
                  "type": "boolean"
                },
                "change_24h_pct": {
                  "type": [
                    "number",
                    "null"
                  ]
                },
                "coin_id": {
                  "type": "string"
                },
                "market_cap": {
                  "type": [
                    "number",
                    "null"
                  ]
                },
                "price": {
                  "type": "number"
                },
                "query": {
                  "type": "string"
                },
                "source": {
                  "type": "string"
                },
                "vs_currency": {
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://currency-api-production-4a8d.up.railway.app/crypto/price"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://currency-api-production-4a8d.up.railway.app/crypto/price");
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://currency-api-production-4a8d.up.railway.app/crypto/price")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header