Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453

robots

robots.txt check: fetches the origin's /robots.txt server-side and reports whether a given URL path is allowed or blocked for a user agent, with the matched rule, the robots URL, the HTTP status, a timestamp and a tamper-evident receipt. Query parameters: url (required), user_agent (optional, defaults to *). Only robots.txt is fetched; no crawling. Pair with GET /api/v1/link-map or /api/v1/sitemap to plan an allowed fetch.

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1000 (raw units)
price
1
calls / 30d
1
unique payers
2026-08-23
updated

Provider

kairostamp.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xdB6F694aE695C632C82677a50593B46137808453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "url": "https://example.com/pricing",
          "user_agent": "GPTBot"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "chain_hash": "d084fff3e5d852089814f7d4d3ffe9d04d1a39ce9d2e0573a95f24cf78fb584d",
          "decision": "allowed",
          "fetched_at": "2026-08-23T05:32:12.771Z",
          "matched_rule": "Allow: /pricing",
          "matched_user_agent": "*",
          "note": "Decision derived from the origin's /robots.txt as fetched at this timestamp. Only that one file is fetched; the target URL itself is not requested and nothing is crawled. robots.txt is a crawler convention, not a legal permission.",
          "receipt_id": "85cd424c-b68b-440e-8f4f-e02147799f30",
          "robots_status": 200,
          "robots_url": "https://example.com/robots.txt",
          "target_url": "https://example.com/pricing",
          "user_agent": "GPTBot"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "additionalProperties": false,
              "examples": [
                {
                  "url": "https://example.com/pricing",
                  "user_agent": "GPTBot"
                }
              ],
              "properties": {
                "url": {
                  "description": "Public http/https URL whose path should be evaluated. Sent as the `url` query parameter.",
                  "examples": [
                    "https://example.com/"
                  ],
                  "format": "uri",
                  "maxLength": 2048,
                  "type": "string"
                },
                "user_agent": {
                  "description": "Crawler user-agent token to evaluate. Defaults to `*`.",
                  "examples": [
                    "*",
                    "GPTBot"
                  ],
                  "maxLength": 200,
                  "type": "string"
                }
              },
              "required": [
                "url"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "chain_hash": {
                  "description": "Tamper-evident hash-chain value.",
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "decision": {
                  "enum": [
                    "allowed",
                    "blocked",
                    "unknown"
                  ],
                  "type": "string"
                },
                "fetched_at": {
                  "format": "date-time",
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "matched_rule": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "matched_user_agent": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "note": {
                  "type": "string"
                },
                "receipt_id": {
                  "format": "uuid",
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "robots_status": {
                  "type": [
                    "integer",
                    "null"
                  ]
                },
                "robots_url": {
                  "format": "uri",
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "target_url": {
                  "format": "uri",
                  "type": "string"
                },
                "user_agent": {
                  "type": "string"
                }
              },
              "required": [
                "target_url",
                "decision",
                "robots_url"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "builder-code": {
    "info": {
      "s": [
        "cdp_sdk_server"
      ]
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "additionalProperties": false,
      "properties": {
        "a": {
          "description": "App builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        },
        "s": {
          "description": "Service builder codes",
          "items": {
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          },
          "maxItems": 11,
          "type": "array"
        },
        "w": {
          "description": "Wallet builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        }
      },
      "type": "object"
    }
  },
  "eip2612GasSponsoring": {},
  "erc20ApprovalGasSponsoring": {}
}

Use it

curl

curl "https://kairostamp.com/api/v1/robots-check"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://kairostamp.com/api/v1/robots-check");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://kairostamp.com/api/v1/robots-check")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/12359.json, and this resource appears in /discovery/resources and /discovery/search.