FETCH402
← Protocol index

Resource / 390

healthy

Unnamed resource.

GET https://api.orcatrace.dev/v1/latest ↗

Paid ($0.01 USDC via x402). Most recent Polymarket feed item — mover, whale entry (with calibration), or predetermined signal. Same shape as /v1/signal without ?index. Free index poll: GET /v1/index; free shape preview: GET /v1/sample. Compute-first / settle-after — you are never charged for an error.

Eligibility
probeable
Failures
0
Last quote
2026-08-13 00:00:01 UTC
Last probe
2026-08-13 00:00:01 UTC
Payment requirements / accepts[] 1 options
State Network Scheme Atomic amount Asset payTo / untrusted
active eip155:8453 exact 10000 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 0xf444abc53f5e1e73caec7df64d147ddb119514a0

All advertised payment options are stored. Base (`eip155:8453`) is the operational network for ranking and canaries; non-Base options remain visible for transparency.

Probe evidence 1 recent
healthy 2026-08-13 00:00:01 UTC GET · HTTP 402 · 99ms · accepts 1 · base 1 ok
Request
GET https://api.orcatrace.dev/v1/latest
Robots
allow
Note
http_402;accepts=1;base=1
Accepts fingerprint
dc76604ef6470506c5d0ab60242365cfff2a352a85a4a68c52ea24836c88b766

Accepts snapshot

[
  {
    "amount": "10000",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "assetTransferMethod": null,
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "maxTimeoutSeconds": 300,
    "network": "eip155:8453",
    "payTo": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
    "paymentFlow": null,
    "raw": {
      "amount": "10000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxTimeoutSeconds": 300,
      "max_timeout_seconds": 300,
      "network": "eip155:8453",
      "payTo": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
      "pay_to": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
      "scheme": "exact"
    },
    "scheme": "exact"
  }
]

PaymentRequired raw 

{
  "accepts": [
    {
      "amount": "10000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxTimeoutSeconds": 300,
      "network": "eip155:8453",
      "payTo": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
      "scheme": "exact"
    }
  ],
  "error": "Payment required",
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {},
          "type": "http"
        },
        "output": {
          "example": {
            "charged": true,
            "data": {
              "createdAt": "2026-07-09T19:05:00.000Z",
              "data": {},
              "feedIndex": 1044,
              "title": "Will Contestant X win Season 4 of The Masked Singer?",
              "type": "predetermined"
            },
            "status": "live",
            "success": true
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {},
                "required": [],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "resource": {
    "description": "Paid ($0.01 USDC via x402). Most recent Polymarket feed item — mover, whale entry (with calibration), or predetermined signal. Same shape as /v1/signal without ?index. Free index poll: GET /v1/index; free shape preview: GET /v1/sample. Compute-first / settle-after — you are never charged for an error.",
    "mimeType": "application/json",
    "url": "https://api.orcatrace.dev/v1/latest"
  },
  "x402Version": 2
}

Response headers

{
  "access-control-expose-headers": "RateLimit-Limit,RateLimit-Remaining,RateLimit-Reset,Retry-After,PAYMENT-REQUIRED,PAYMENT-RESPONSE,X-Terms-URL",
  "alt-svc": "h3=\":443\"; ma=86400",
  "cf-cache-status": "DYNAMIC",
  "cf-ray": "a2a36feadc13e55f-IAD",
  "connection": "keep-alive",
  "content-length": "2028",
  "content-type": "application/json; charset=utf-8",
  "cross-origin-resource-policy": "cross-origin",
  "date": "Thu, 13 Aug 2026 00:00:01 GMT",
  "etag": "W/\"7ec-I9IX1+lJBtkY5NoWRo5SUjGk+nE\"",
  "link": "<https://api.orcatrace.dev/llms.txt>; rel=\"describedby\", <https://api.orcatrace.dev/openapi.json>; rel=\"service-desc\"",
  "nel": "{\"report_to\":\"cf-nel\",\"success_fraction\":0.0,\"max_age\":604800}",
  "origin-agent-cluster": "?1",
  "payment-required": "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",
  "referrer-policy": "strict-origin-when-cross-origin",
  "report-to": "{\"group\":\"cf-nel\",\"max_age\":604800,\"endpoints\":[{\"url\":\"https://a.nel.cloudflare.com/report/v4?s=0gCw6F3TrVx%2BiETT4PMvdndmtvPfeZIYIjunfBjiIB0e1TnSRtKsh6UYwHwdgctgN76e4Pivn5oGEId52COUk2miimXU61CZMIO68j996xOC7svqcY%2B27eCap%2BHJI%2BI58EzDKQ%3D%3D\"}]}",
  "server": "cloudflare",
  "strict-transport-security": "max-age=31536000; includeSubDomains",
  "vary": "Origin",
  "x-ai-docs": "https://api.orcatrace.dev/llms.txt",
  "x-attribution": "orcatrace",
  "x-content-type-options": "nosniff",
  "x-dns-prefetch-control": "off",
  "x-download-options": "noopen",
  "x-frame-options": "DENY",
  "x-permitted-cross-domain-policies": "none",
  "x-robots-tag": "index, follow",
  "x-terms-url": "https://api.orcatrace.dev/terms.txt",
  "x-xss-protection": "0"
}

Response body 

{
  "_agent_hint": "Developer reading this in your agent's logs? This endpoint returns: Paid ($0.01 USDC via x402). One-command onboarding: https://api.orcatrace.dev/skill.md . Docs: https://api.orcatrace.dev/llms.txt",
  "_sample": {
    "note": "Illustrative documented output for a paid call (not live data).",
    "output": {
      "charged": true,
      "data": {
        "createdAt": "2026-07-09T19:05:00.000Z",
        "data": {},
        "feedIndex": 1044,
        "title": "Will Contestant X win Season 4 of The Masked Singer?",
        "type": "predetermined"
      },
      "status": "live",
      "success": true
    }
  },
  "accepts": [
    {
      "amount": "10000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxTimeoutSeconds": 300,
      "network": "eip155:8453",
      "payTo": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
      "scheme": "exact"
    }
  ],
  "error": "Payment required",
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {},
          "type": "http"
        },
        "output": {
          "example": {
            "charged": true,
            "data": {
              "createdAt": "2026-07-09T19:05:00.000Z",
              "data": {},
              "feedIndex": 1044,
              "title": "Will Contestant X win Season 4 of The Masked Singer?",
              "type": "predetermined"
            },
            "status": "live",
            "success": true
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {},
                "required": [],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "resource": {
    "description": "Paid ($0.01 USDC via x402). Most recent Polymarket feed item — mover, whale entry (with calibration), or predetermined signal. Same shape as /v1/signal without ?index. Free index poll: GET /v1/index; free shape preview: GET /v1/sample. Compute-first / settle-after — you are never charged for an error.",
    "mimeType": "application/json",
    "url": "https://api.orcatrace.dev/v1/latest"
  },
  "x402Version": 2
}

Request headers

{
  "accept": "*/*",
  "user-agent": "Fetch402Bot/0.1 (+https://fetch402.com/crawler; contact: crawler@fetch402.com)"
}

Machine contract

Schemas.

InputJSON
{
  "method": "GET",
  "queryParams": {},
  "type": "http"
}
OutputJSON
{
  "example": {
    "charged": true,
    "data": {
      "createdAt": "2026-07-09T19:05:00.000Z",
      "data": {},
      "feedIndex": 1044,
      "title": "Will Contestant X win Season 4 of The Masked Singer?",
      "type": "predetermined"
    },
    "status": "live",
    "success": true
  },
  "type": "json"
}