scvd.store

Live 402 challenge

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

{
  "note": "Payment requirements are in the PAYMENT-REQUIRED response header (base64 JSON). Sign one of the accepts and retry with the PAYMENT-SIGNATURE header.",
  "spec": {
    "price": {
      "network": "Base (eip155:8453)",
      "pricing": "fixed",
      "currency": "USDC",
      "protocol": "x402 v2",
      "tiers_usdc": [
        50
      ],
      "amount_usdc": 50
    },
    "inputs": {
      "properties": {
        "agent_name": {
          "type": "string",
          "description": "Optional name to put on the certificate and patron badge, up to 80 characters."
        },
        "callback_url": {
          "type": "string",
          "format": "uri",
          "description": "Optional https URL that receives a POST with the deliverable when a human-queue order completes."
        }
      }
    },
    "outputs": {
      "delivery": "human fulfillment within 168 hours; the order URL reports status",
      "always_included": [
        "signed certificate (ed25519)",
        "sequential patron number",
        "badge_url",
        "verify_url"
      ]
    },
    "capability": "A written review of the buyer's app by the keeper after real use, delivered on the completed order.",
    "constraints": [
      "2 per week; a waitlist opens when the shelf empties",
      "human fulfillment, 168h promise; refund is automatic if the window is missed"
    ],
    "verification": {
      "cost": "free, unlimited, forever",
      "verify_url": "https://scvd.store/api/verify/{id}",
      "signing_key": "https://scvd.store/.well-known/scvd-signing-key",
      "sample_verify_url": "https://scvd.store/api/verify/cert_4dww28dx5j",
      "sample_artifact_id": "cert_4dww28dx5j"
    }
  },
  "error": "That'll be $50 flat, friend. Honesty is the expensive part.",
  "item_id": "app_gutcheck",
  "pricing": "fixed",
  "guarantee": "Guaranteed: signature validity forever; verification free forever; price as displayed; delivery format as specified. Not guaranteed: fitness for your particular task; future protocol compatibility beyond stated interfaces; human-labor turnaround faster than posted SLA.",
  "spec_note": "Returns: A written review of the buyer's app by the keeper after real use, delivered on the completed order. Price: $50 USDC (x402, Base). Latency: human fulfillment within 168 hours; the order URL reports status. Verify: GET /api/verify/{id} — free, unlimited, forever (live sample: cert_4dww28dx5j). Constraints: 2 per week; a waitlist opens when the shelf empties; human fulfillment, 168h promise; refund is automatic if the window is missed.",
  "verification": {
    "verify_url": "https://scvd.store/api/verify/{id}",
    "identity_policy": "This key, this wallet, this domain, never rotated; any future change will be versioned with permanent history.",
    "key_fingerprint": "d98ebec640489852c7076aee66615705200971e7d32c54964e173aea3d37e1af",
    "signing_key_url": "https://scvd.store/.well-known/scvd-signing-key",
    "sample_verify_url": "https://scvd.store/api/verify/cert_4dww28dx5j",
    "sample_artifact_id": "cert_4dww28dx5j"
  },
  "min_price_usdc": 50,
  "want_something_else": "Can't pay, or want something we don't stock? POST https://scvd.store/api/request, the keeper reads every one on Sundays."
}

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": "0xDD350976B8cfFc65938C0464d39A2C78BE079bd0",
    "amount": "50000000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "agent_name": "friendly-agent"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "status": "queued",
          "message": "Order's on the keeper's bench. A human does this part, give him the week.",
          "order_id": "ord_h7n3k9wmxq",
          "tip_usdc": 0,
          "badge_url": "https://scvd.store/badges/41.svg",
          "order_url": "https://scvd.store/api/order/ord_h7n3k9wmxq",
          "paid_usdc": 50,
          "signature": "<128 hex chars, ed25519>",
          "sla_hours": 168,
          "verify_url": "https://scvd.store/api/verify/cert_k2m9v4xwqp",
          "certificate": {
            "date": "2026-07-22T15:04:05.000Z",
            "item": "app_gutcheck",
            "cert_id": "cert_k2m9v4xwqp",
            "patron_number": 41
          },
          "patron_number": 41
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "agent_name": {
                  "type": "string",
                  "description": "Optional name to put on the certificate and patron badge, up to 80 characters."
                },
                "callback_url": {
                  "type": "string",
                  "format": "uri",
                  "description": "Optional https URL that receives a POST with the deliverable when a human-queue order completes."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-07-24 16:07Z

Last indexed by Roundhouse

2026-07-25 00:00Z

Last enriched (probe, favicon, geo)

2026-09-11 05:15Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 410