{
  "x402Version": 2,
  "id": 54549,
  "slug": "54549",
  "resource": "https://scrooge-x402-tool-mill.vercel.app/v1/change-fingerprint",
  "description": "Fingerprint a public page so agents can detect changes: final url, etag, lastModified, sha256 contentHash of normalized visible text, raw byteLength, and fetchedAt. POST JSON {\"url\":\"https://example.com\"}. Public http(s) only; private hosts blocked. $0.04 USDC on Base (eip155:8453). No API key.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xfE2353C808F2409cCb81508005A62cef29457706",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "40000",
      "amountUsd": 0.04,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "additionalProperties": false,
        "properties": {
          "byteLength": {
            "description": "Raw upstream response size in bytes",
            "minimum": 0,
            "type": "integer"
          },
          "contentHash": {
            "description": "sha256 hex of normalized visible text",
            "pattern": "^[a-f0-9]{64}$",
            "type": "string"
          },
          "etag": {
            "description": "Upstream ETag header, or null",
            "type": [
              "string",
              "null"
            ]
          },
          "fetchedAt": {
            "description": "ISO-8601 time the page was fetched",
            "format": "date-time",
            "type": "string"
          },
          "lastModified": {
            "description": "Upstream Last-Modified header, or null",
            "type": [
              "string",
              "null"
            ]
          },
          "url": {
            "description": "Final URL after redirects",
            "format": "uri",
            "type": "string"
          }
        },
        "required": [
          "url",
          "etag",
          "lastModified",
          "contentHash",
          "byteLength",
          "fetchedAt"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "byteLength": 528,
            "contentHash": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "etag": null,
            "fetchedAt": "2026-09-21T00:00:00.000Z",
            "lastModified": null,
            "url": "https://example.com/"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "additionalProperties": false,
                "properties": {
                  "url": {
                    "description": "Public http(s) URL to fetch (SSRF-safe; private/link-local blocked)",
                    "format": "uri",
                    "type": "string"
                  }
                },
                "required": [
                  "url"
                ],
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "additionalProperties": false,
                "properties": {
                  "byteLength": {
                    "description": "Raw upstream response size in bytes",
                    "minimum": 0,
                    "type": "integer"
                  },
                  "contentHash": {
                    "description": "sha256 hex of normalized visible text",
                    "pattern": "^[a-f0-9]{64}$",
                    "type": "string"
                  },
                  "etag": {
                    "description": "Upstream ETag header, or null",
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "fetchedAt": {
                    "description": "ISO-8601 time the page was fetched",
                    "format": "date-time",
                    "type": "string"
                  },
                  "lastModified": {
                    "description": "Upstream Last-Modified header, or null",
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "url": {
                    "description": "Final URL after redirects",
                    "format": "uri",
                    "type": "string"
                  }
                },
                "required": [
                  "url",
                  "etag",
                  "lastModified",
                  "contentHash",
                  "byteLength",
                  "fetchedAt"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "scrooge-x402-tool-mill.vercel.app",
  "lastUpdated": "2026-09-23T04:06:17.784Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-23T04:06:17.672Z"
  },
  "metadata": {
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://example.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "byteLength": 528,
              "contentHash": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
              "etag": null,
              "fetchedAt": "2026-09-21T00:00:00.000Z",
              "lastModified": null,
              "url": "https://example.com/"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "url": {
                      "description": "Public http(s) URL to fetch (SSRF-safe; private/link-local blocked)",
                      "format": "uri",
                      "type": "string"
                    }
                  },
                  "required": [
                    "url"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "additionalProperties": false,
                  "properties": {
                    "byteLength": {
                      "description": "Raw upstream response size in bytes",
                      "minimum": 0,
                      "type": "integer"
                    },
                    "contentHash": {
                      "description": "sha256 hex of normalized visible text",
                      "pattern": "^[a-f0-9]{64}$",
                      "type": "string"
                    },
                    "etag": {
                      "description": "Upstream ETag header, or null",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "fetchedAt": {
                      "description": "ISO-8601 time the page was fetched",
                      "format": "date-time",
                      "type": "string"
                    },
                    "lastModified": {
                      "description": "Upstream Last-Modified header, or null",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "url": {
                      "description": "Final URL after redirects",
                      "format": "uri",
                      "type": "string"
                    }
                  },
                  "required": [
                    "url",
                    "etag",
                    "lastModified",
                    "contentHash",
                    "byteLength",
                    "fetchedAt"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "scrooge-x402-tool-mill.vercel.app",
    "manifest_name": "scrooge-x402-tool-mill.vercel.app",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {
      "byteLength": 0,
      "contentHash": "string",
      "etag": "string",
      "fetchedAt": "2026-01-01T00:00:00Z",
      "lastModified": "string",
      "url": "https://example.com"
    },
    "type": "string"
  }
}