{
  "x402Version": 2,
  "id": 29150,
  "slug": "29150",
  "resource": "https://api.agentmercantile.com/v1/web-change-snapshot",
  "description": "Determine whether the bounded normalized representation of one public HTTPS webpage has changed since a caller-held baseline. Returns fingerprints and change status, not continuous monitoring, alerts, webhooks, semantic importance, AI summaries, or site-wide crawling.",
  "type": "http",
  "serviceName": "Agent Mercantile",
  "resourceType": "Web Intelligence",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xdb7b2b54f80479826222749a2ea73a8acc306e1e",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 60
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "additionalProperties": true,
        "properties": {
          "baseline": {
            "description": "Caller-held compact comparison evidence when supplied.",
            "type": "object"
          },
          "comparison_scope": {
            "type": "string"
          },
          "comparison_status": {
            "enum": [
              "BASELINE",
              "UNCHANGED",
              "CHANGED",
              "INCONCLUSIVE"
            ],
            "type": "string"
          },
          "limitations": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "machine": {
            "enum": [
              "VM07"
            ],
            "type": "string"
          },
          "methodology_version": {
            "enum": [
              "web-change-snapshot-0.1.0"
            ],
            "type": "string"
          },
          "requested_url": {
            "type": "string"
          },
          "status": {
            "enum": [
              "OK",
              "PARTIAL",
              "HOLD"
            ],
            "type": "string"
          }
        },
        "required": [
          "status",
          "machine",
          "methodology_version",
          "requested_url",
          "comparison_status",
          "limitations"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "description": "Determine whether the bounded normalized representation of one public HTTPS webpage has changed since a caller-held baseline. Returns fingerprints and change status, not continuous monitoring, alerts, webhooks, semantic importance, AI summaries, or site-wide crawling.",
        "input": {
          "body": {
            "url": "https://example.com/"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "baseline": {
              "extraction_complete": true,
              "methodology_version": "web-change-snapshot-0.1.0"
            },
            "comparison_scope": "Bounded normalized representation observed by VM07, not the entire website.",
            "comparison_status": "BASELINE",
            "limitations": [
              "Bounded webpage representation comparison, not continuous monitoring or semantic importance."
            ],
            "machine": "VM07",
            "methodology_version": "web-change-snapshot-0.1.0",
            "requested_url": "https://example.com/",
            "status": "OK"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "additionalProperties": false,
                "properties": {
                  "baseline": {
                    "description": "Optional caller-held hashes and completeness flags. Never the previous webpage body.",
                    "type": "object"
                  },
                  "url": {
                    "description": "One absolute public HTTPS URL on port 443. No credentials.",
                    "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": true,
                "properties": {
                  "baseline": {
                    "description": "Caller-held compact comparison evidence when supplied.",
                    "type": "object"
                  },
                  "comparison_scope": {
                    "type": "string"
                  },
                  "comparison_status": {
                    "enum": [
                      "BASELINE",
                      "UNCHANGED",
                      "CHANGED",
                      "INCONCLUSIVE"
                    ],
                    "type": "string"
                  },
                  "limitations": {
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  },
                  "machine": {
                    "enum": [
                      "VM07"
                    ],
                    "type": "string"
                  },
                  "methodology_version": {
                    "enum": [
                      "web-change-snapshot-0.1.0"
                    ],
                    "type": "string"
                  },
                  "requested_url": {
                    "type": "string"
                  },
                  "status": {
                    "enum": [
                      "OK",
                      "PARTIAL",
                      "HOLD"
                    ],
                    "type": "string"
                  }
                },
                "required": [
                  "status",
                  "machine",
                  "methodology_version",
                  "requested_url",
                  "comparison_status",
                  "limitations"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "webpage-change-detection",
    "url-change",
    "page-freshness",
    "documentation-monitoring",
    "pricing-page-monitoring",
    "bazaar"
  ],
  "sourceHost": "api.agentmercantile.com",
  "lastUpdated": "2026-10-10T04:16:30.86Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-10-10T04:16:30.555Z"
  },
  "metadata": {
    "serviceName": "Agent Mercantile",
    "extensions": {
      "bazaar": {
        "info": {
          "description": "Determine whether the bounded normalized representation of one public HTTPS webpage has changed since a caller-held baseline. Returns fingerprints and change status, not continuous monitoring, alerts, webhooks, semantic importance, AI summaries, or site-wide crawling.",
          "input": {
            "body": {
              "url": "https://example.com/"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "baseline": {
                "extraction_complete": true,
                "methodology_version": "web-change-snapshot-0.1.0"
              },
              "comparison_scope": "Bounded normalized representation observed by VM07, not the entire website.",
              "comparison_status": "BASELINE",
              "limitations": [
                "Bounded webpage representation comparison, not continuous monitoring or semantic importance."
              ],
              "machine": "VM07",
              "methodology_version": "web-change-snapshot-0.1.0",
              "requested_url": "https://example.com/",
              "status": "OK"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "baseline": {
                      "description": "Optional caller-held hashes and completeness flags. Never the previous webpage body.",
                      "type": "object"
                    },
                    "url": {
                      "description": "One absolute public HTTPS URL on port 443. No credentials.",
                      "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": true,
                  "properties": {
                    "baseline": {
                      "description": "Caller-held compact comparison evidence when supplied.",
                      "type": "object"
                    },
                    "comparison_scope": {
                      "type": "string"
                    },
                    "comparison_status": {
                      "enum": [
                        "BASELINE",
                        "UNCHANGED",
                        "CHANGED",
                        "INCONCLUSIVE"
                      ],
                      "type": "string"
                    },
                    "limitations": {
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "machine": {
                      "enum": [
                        "VM07"
                      ],
                      "type": "string"
                    },
                    "methodology_version": {
                      "enum": [
                        "web-change-snapshot-0.1.0"
                      ],
                      "type": "string"
                    },
                    "requested_url": {
                      "type": "string"
                    },
                    "status": {
                      "enum": [
                        "OK",
                        "PARTIAL",
                        "HOLD"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "status",
                    "machine",
                    "methodology_version",
                    "requested_url",
                    "comparison_status",
                    "limitations"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "api.agentmercantile.com",
    "manifest_name": "api.agentmercantile.com",
    "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": {
    "baseline": {
      "extraction_complete": true,
      "methodology_version": "web-change-snapshot-0.1.0"
    },
    "comparison_scope": "Bounded normalized representation observed by VM07, not the entire website.",
    "comparison_status": "BASELINE",
    "limitations": [
      "Bounded webpage representation comparison, not continuous monitoring or semantic importance."
    ],
    "machine": "VM07",
    "methodology_version": "web-change-snapshot-0.1.0",
    "requested_url": "https://example.com/",
    "status": "OK"
  }
}