genesiscode2026/mcp-tool-schema-drift-detector · 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/mcp-tool-schema-drift-detector

# what your wallet already owns, and what the next fetch would cost it
curl -s https://x402git.com/api/v/genesiscode2026/mcp-tool-schema-drift-detector \
  -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/mcp-tool-schema-drift-detector",
    "description": "genesiscode2026/mcp-tool-schema-drift-detector v1.0.0 — release. Detects breaking schema drift in Model Context Protocol (MCP) tool lists, preventing AI agent crashes. Security scan passed; signed download, 5-minute URL.",
    "mimeType": "application/zip",
    "serviceName": "mcp-tool-schema-drift-detector",
    "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/mcp-tool-schema-drift-detector",
      "description": "genesiscode2026/mcp-tool-schema-drift-detector v1.0.0 — release. Detects breaking schema drift in Model Context Protocol (MCP) tool lists, preventing AI agent crashes. 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/mcp-tool-schema-drift-detector/1.0.0.zip?signed=…",
            "expires_at": "2026-09-16T12:05:00.000Z",
            "version_endpoint": "https://x402git.com/api/r/genesiscode2026/mcp-tool-schema-drift-detector/v/1.0.0",
            "manifest_url": "https://x402git.com/api/label/genesiscode2026/mcp-tool-schema-drift-detector",
            "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/mcp-tool-schema-drift-detector",
    "scan_badge_url": "https://x402git.com/api/label/genesiscode2026/mcp-tool-schema-drift-detector#scan",
    "update_price_micro": "5000000",
    "quote_id": "q_8a4207bcecd712c71556e8884479c950",
    "valid_before": "2026-09-17T23:51:35.819Z",
    "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/mcp-tool-schema-drift-detector 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/mcp-tool-schema-drift-detector, and the free manifest at https://x402git.com/api/label/genesiscode2026/mcp-tool-schema-drift-detector shows what is inside before anyone pays.",
    "listing_url": "https://x402git.com/genesiscode2026/mcp-tool-schema-drift-detector",
    "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/mcp-tool-schema-drift-detector

Manifest

https://x402git.com/api/label/genesiscode2026/mcp-tool-schema-drift-detector

Version

https://x402git.com/api/v/genesiscode2026/mcp-tool-schema-drift-detector

Artifact sha256

2371444beb4974637b1ba03454537cd467da439a5ff16fc4cbab0946910c1966

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.