sentinel.rootstuff.io

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "docs": "https://sentinel.rootstuff.io/mpp/",
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x38287535a4f47f53360940cfad8bf9ac5bc04a69",
      "amount": "50000",
      "scheme": "exact",
      "network": "eip155:8453",
      "price_usd": "0.05"
    }
  ],
  "message": "This endpoint costs $0.05 per call, paid with USDC on Base over x402. The machine-readable offer is in the PAYMENT-REQUIRED response header (base64 JSON); any x402 v2 client handles it. POST {\"url\":\"https://example.com\",\"callback_url\":\"https://agent.example/hooks/watch\",\"payload\":{\"deploy\":\"v2.3.1\"}} with a payment to get: watch a url for 1 hour: signed callbacks when its verdict changes.",
  "manifest": "https://sentinel.rootstuff.io/.well-known/x402",
  "resource": "https://sentinel.rootstuff.io/x402/watch-1h",
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x38287535a4f47f53360940cfad8bf9ac5bc04a69",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "url": "https://example.com",
          "payload": {
            "deploy": "v2.3.1"
          },
          "callback_url": "https://agent.example/hooks/watch"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "url": "https://example.com",
          "kind": "watch",
          "state": "active",
          "receipt": {
            "key_id": "…",
            "algorithm": "ed25519",
            "signature": "…",
            "receipt_id": "01J…"
          },
          "wake_id": "wk_01j…",
          "expires_at": "2026-09-10T16:00:00+00:00",
          "interval_seconds": 300
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "required": [
                "url",
                "callback_url"
              ],
              "properties": {
                "url": {
                  "type": "string",
                  "description": "The http(s) URL to watch. Public hosts only."
                },
                "payload": {
                  "type": "object",
                  "description": "Up to 4 KB of JSON echoed back in every callback."
                },
                "callback_url": {
                  "type": "string",
                  "description": "Public https URL that receives the POSTs. Private and reserved addresses are refused; redirects are not followed."
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-09-10 16:07Z

Last indexed by Roundhouse

2026-09-24 15:50Z

Last enriched (probe, favicon, geo)

2026-09-10 16:45Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402