Fresh402 Web Intelligence

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1

0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "payTo": "0xFAC492A8D7843C9aFCCa6A1691BCCB5425ab14F3"
  }
]

Observed health

Status

Reachable

Latest latency

369 ms

Average latency

1042 ms

HTTP status

405

Last checked

2026-11-04T01:06:20.253Z

Reachability

100% over 15 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "description": "Paid Check input: exactly one of url or watch_id is required. Content rules are allowed only on the url path; watch_id always reuses saved rules. Optional previous_hash overrides the reference hash; max_age_seconds controls cache reuse and include_diff controls text-diff output.",
      "examples": [
        {
          "include_diff": true,
          "max_age_seconds": 0,
          "selector": "main",
          "url": "https://example.com/docs"
        }
      ],
      "oneOf": [
        {
          "required": [
            "url"
          ]
        },
        {
          "required": [
            "watch_id"
          ]
        }
      ],
      "properties": {
        "html_attributes": {
          "description": "Optional HTML-only watch rule: up to4 of href,title,alt,aria-label; default[] retains existing text-only normalization. Distinct names are sorted; nonempty rules create a separate version1 watch/baseline. Records bounded meaningful attributes within the saved selector or filtered page, including same-text link destination changes. Cannot be supplied with watch_id, even[]. Unsafe hrefs are hashed, never fetched. Limits:200 elements,2048 characters/value,32768 evidence bytes; excess fails, never clips silently.",
          "items": {
            "description": "One explicitly observed HTML attribute: href (a/area only),title,alt or aria-label. No class/style/event attributes; links are inert evidence and never fetched.",
            "enum": [
              "alt",
              "aria-label",
              "href",
              "title"
            ],
            "type": "string"
          },
          "maxItems": 4,
          "type": "array"
        },
        "ignore_json_paths": {
          "description": "Optional JSON-only exclusions, up to 20 paths of 1-256 characters starting with '/'; '~0'/'~1' escapes and '*' segments are supported. Example: ['/updated_at']. Accepted only with url; default []. With watch_id, omit entirely (including []): saved paths are reused.",
          "items": {
            "description": "JSON Pointer-style path, 1-256 characters, starting with '/'. Decode '~0' as '~' and '~1' as '/'; '*' matches all object keys or array elements. Example: '/items/*/updated_at'.",
            "maxLength": 256,
            "minLength": 1,
            "pattern": "^\\/",
            "type": "string"
          },
          "maxItems": 20,
          "type": "array"
        },
        "ignore_selectors": {
          "description": "Optional HTML-only exclusion array, up to 20 supported CSS selectors of 1-256 characters each, e.g. ['.timestamp']. Accepted only with url; default []. With watch_id, omit the field entirely (including []): saved exclusions are reused.",
          "items": {
            "description": "HTML element(s) to remove before normalization: a supported CSS selector, 1-256 characters, e.g. '.timestamp' or 'nav'.",
            "maxLength": 256,
            "minLength": 1,
            "type": "string"
          },
          "maxItems": 20,
          "type": "array"
        },
        "include_diff": {
          "description": "Optional boolean; runtime default: true. Request a compact deterministic text diff when content changed and compatible prior text is retained. False omits the diff; true cannot recover unavailable old content and does not enable Smart Diff's structural analysis.",
          "type": "boolean"
        },
        "max_age_seconds": {
          "description": "Optional integer cache age in seconds, 0-86400; runtime default: 0. A positive value permits reuse of a sufficiently recent watch result without fetching. Zero contacts the source (conditional HTTP may return 304). Cached Checks still require payment; this does not schedule background polling.",
          "maximum": 86400,
          "minimum": 0,
          "type": "integer"
        },
        "previous_hash": {
          "description": "Optional previous Fresh402 content hash: exactly 64 hexadecimal characters, case-insensitive. Overrides comparison with the watch's current stored hash. Omit to use that stored hash; a new URL watch without a prior hash returns changed:null. Hash comparison does not require retained old text, but a text diff does; a hash cannot reconstruct missing content.",
          "pattern": "^[a-fA-F0-9]{64}$",
          "type": "string"
        },
        "selector": {
          "description": "Optional HTML CSS scope, 1-256 characters, e.g. 'main'; accepted only with url. Omit for the page after built-in noise removal. No match returns 422; not supported for JSON/plain text. With watch_id, omit this field: the saved selector is reused.",
          "maxLength": 256,
          "minLength": 1,
          "type": "string"
        },
        "url": {
          "description": "Supply exactly one of url or watch_id. URL must be absolute public HTTPS on port 443, at most 4096 characters, with no credentials/private targets, e.g. 'https://example.com/docs'. Fresh402's own service URLs, including its discovery /openapi.json, cannot be targets; choose an external public document. With url, optional content rules identify the watch; an existing watch is reused or a new one is created by this paid Check. Separate registration is not required. No JavaScript rendering.",
          "format": "uri",
          "maxLength": 4096,
          "pattern": "^[Hh][Tt][Tt][Pp][Ss]://",
          "type": "string"
        },
        "watch_id": {
          "description": "Supply exactly one of watch_id or url. An existing ID returned by fresh402_register (free), POST /v1/register, or a URL-based Check: 'w_' followed by 32 lowercase hexadecimal characters. Reuses that watch's stored URL and rules. When supplied, omit selector, ignore_selectors and ignore_json_paths entirely, even empty arrays. Do not invent an ID.",
          "pattern": "^w_[a-f0-9]{32}$",
          "type": "string"
        }
      },
      "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 schema

{
  "properties": {
    "example": {
      "properties": {
        "cache_status": {
          "type": "string"
        },
        "cached": {
          "type": "boolean"
        },
        "changed": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "checked_at": {
          "type": "string"
        },
        "comparison_source": {
          "type": "string"
        },
        "content_kind": {
          "type": "string"
        },
        "diff": {
          "properties": {
            "added_excerpt": {
              "type": "string"
            },
            "available": {
              "type": "boolean"
            },
            "change_ratio": {
              "type": "number"
            },
            "changed": {
              "type": "boolean"
            },
            "content_truncated": {
              "type": "boolean"
            },
            "excerpt_truncated": {
              "description": "True when bounded contextual added/removed excerpts were clipped; independent of retained snapshot completeness.",
              "type": "boolean"
            },
            "reason": {
              "type": "string"
            },
            "removed_excerpt": {
              "type": "string"
            }
          },
          "type": "object"
        },
        "final_url": {
          "type": "string"
        },
        "hash": {
          "type": "string"
        },
        "html_attribute_rules_version": {
          "const": 1
        },
        "html_attributes": {
          "items": {
            "enum": [
              "href",
              "title",
              "alt",
              "aria-label"
            ]
          },
          "type": "array"
        },
        "network_fetched": {
          "type": "boolean"
        },
        "noise_detected": {
          "type": "boolean"
        },
        "normalizer_version": {
          "type": "integer"
        },
        "persistence_error": {
          "type": "string"
        },
        "previous_hash": {
          "type": [
            "string",
            "null"
          ]
        },
        "raw_changed": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "snapshot_saved": {
          "type": "boolean"
        },
        "snapshot_truncated": {
          "type": "boolean"
        },
        "url": {
          "type": "string"
        },
        "watch_id": {
          "type": "string"
        }
      },
      "required": [
        "watch_id",
        "hash",
        "changed",
        "content_kind"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}