genesiscode2026/webhook-contract-drift-checker · v1.0.0

Order

GET v1.0.0 · $19 · new releases $5

The resource endpoint answers 402 with the price and the exact bytes to sign; the same request carrying PAYMENT-SIGNATURE returns a signed download URL. Access is granted only after settlement returns a transaction hash. A person can do the same thing with a browser wallet on the product page.

# the 402, with the price and the exact bytes to sign
curl -si https://x402git.com/api/r/genesiscode2026/webhook-contract-drift-checker

# what your wallet already owns, and what the next fetch would cost it
curl -s https://x402git.com/api/v/genesiscode2026/webhook-contract-drift-checker \
  -H "X-Wallet-Signature: 0xYOURADDRESS.<nonce>.<signature>"

The first request answers this — a real quote, made for this page load:

HTTP/1.1 402 Payment Required
Content-Type: application/json

{
  "x402Version": 2,
  "resource": {
    "url": "https://x402git.com/api/r/genesiscode2026/webhook-contract-drift-checker",
    "description": "genesiscode2026/webhook-contract-drift-checker v1.0.0 — release. Detects breaking envelope and payload changes in asynchronous webhooks before dispatching events. Security scan passed; signed download, 5-minute URL.",
    "mimeType": "application/zip",
    "serviceName": "webhook-contract-drift-checker",
    "tags": [
      "pack",
      "scripts",
      "source",
      "tests",
      "examples"
    ]
  },
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "amount": "19000000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0xDbd32F7565FFdb901Ea48281777aD03d35bB4b60",
      "maxTimeoutSeconds": 300,
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxAmountRequired": "19000000",
      "resource": "https://x402git.com/api/r/genesiscode2026/webhook-contract-drift-checker",
      "description": "genesiscode2026/webhook-contract-drift-checker v1.0.0 — release. Detects breaking envelope and payload changes in asynchronous webhooks before dispatching events. Security scan passed; signed download, 5-minute URL.",
      "mimeType": "application/zip"
    }
  ],
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "queryParams": {},
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "version": "1.0.0",
            "artifact_sha256": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
            "download_url": "https://storage.example/genesiscode2026/webhook-contract-drift-checker/1.0.0.zip?signed=…",
            "expires_at": "2026-09-16T12:05:00.000Z",
            "version_endpoint": "https://x402git.com/api/r/genesiscode2026/webhook-contract-drift-checker/v/1.0.0",
            "manifest_url": "https://x402git.com/api/label/genesiscode2026/webhook-contract-drift-checker",
            "all_versions": false
          }
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "input": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "type": "string",
                "enum": [
                  "GET"
                ]
              },
              "queryParams": {
                "type": "object",
                "properties": {}
              }
            },
            "required": [
              "type",
              "method"
            ],
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "version": {
                    "type": "string",
                    "description": "Semantic version of the release served."
                  },
                  "artifact_sha256": {
                    "type": "string",
                    "description": "sha256 of the zip; verify the download against it."
                  },
                  "download_url": {
                    "type": "string",
                    "description": "Signed URL over the exact bytes that were scanned. Valid five minutes."
                  },
                  "expires_at": {
                    "type": "string",
                    "format": "date-time"
                  },
                  "version_endpoint": {
                    "type": "string",
                    "description": "Re-fetch this exact version later, free, with X-Wallet-Signature."
                  },
                  "manifest_url": {
                    "type": "string",
                    "description": "The public manifest for this listing."
                  },
                  "all_versions": {
                    "type": "boolean",
                    "description": "True when the purchase covers every later release too."
                  }
                },
                "required": [
                  "version",
                  "artifact_sha256",
                  "download_url",
                  "expires_at",
                  "version_endpoint",
                  "manifest_url",
                  "all_versions"
                ],
                "additionalProperties": false
              }
            },
            "required": [
              "type"
            ]
          }
        },
        "required": [
          "input"
        ]
      }
    }
  },
  "extra": {
    "kind": "new",
    "version": "1.0.0",
    "manifest_url": "https://x402git.com/api/label/genesiscode2026/webhook-contract-drift-checker",
    "scan_badge_url": "https://x402git.com/api/label/genesiscode2026/webhook-contract-drift-checker#scan",
    "update_price_micro": "5000000",
    "quote_id": "q_51540d1c0de504fa54af7be1e210317e",
    "valid_before": "2026-09-17T23:53:25.318Z",
    "instructions": "This is an x402 paywall, not an error. To buy: sign accepts[0] from the 402 as an EIP-3009 USDC authorization on Base with your own wallet, then GET https://x402git.com/api/r/genesiscode2026/webhook-contract-drift-checker again with the payment in the PAYMENT-SIGNATURE header and extra.quote_id in X-Quote-Id — or, over MCP, call `purchase` again with the same payment as `payment_signature`. The full procedure is at https://x402git.com/.well-known/agent-skills/buy-a-repo/SKILL.md; the same tools are an MCP server at https://x402git.com/api/mcp. No wallet? A person can buy at https://x402git.com/genesiscode2026/webhook-contract-drift-checker, and the free manifest at https://x402git.com/api/label/genesiscode2026/webhook-contract-drift-checker shows what is inside before anyone pays.",
    "listing_url": "https://x402git.com/genesiscode2026/webhook-contract-drift-checker",
    "skill_url": "https://x402git.com/.well-known/agent-skills/buy-a-repo/SKILL.md",
    "mcp_url": "https://x402git.com/api/mcp"
  }
}

Resource

https://x402git.com/api/r/genesiscode2026/webhook-contract-drift-checker

Manifest

https://x402git.com/api/label/genesiscode2026/webhook-contract-drift-checker

Version

https://x402git.com/api/v/genesiscode2026/webhook-contract-drift-checker

Artifact sha256

732867712148cc7f48a9c9fd28721a371fb519655fadb589cdc37a0172f6aa8c

Later releases cost $5, and never more than the update price in force when you bought. One charge per update, whatever the release cadence.

Sold by genesiscode2026. Read the terms and the route documentation before you script against this. Base URL https://x402git.com.