Schema Drift Guard

Detect breaking structural changes between two JSON/OpenAPI-style schemas, including removals, type changes, new required fields and enum narrowing.

price

0.030 USDC

rail

Base

facilitator

OMNIGATE

method

POST

endpoint https://bounty-engineer-x402-prod.onrender.com/v1/schema-drift-guard

payTo 0xf0c39261192686cdcce529b9919a37863de4c77c

asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

indexed 2026-11-10T17:45:55.075+00:00

Live 402 challenge

Hits the real endpoint without paying and shows exactly what it demands. Nothing is charged.

Pay from your agent

import { wrapFetchWithPayment } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const signer = privateKeyToAccount(process.env.BUYER_PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, { schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(signer) }] });

const res = await pay("https://bounty-engineer-x402-prod.onrender.com/v1/schema-drift-guard", { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify({ "after": { "type": "object" }, "before": { "type": "object" } }) });
console.log(await res.json(), res.headers.get("PAYMENT-RESPONSE"));

Example input

{
  "after": {
    "type": "object"
  },
  "before": {
    "type": "object"
  }
}

Example output

{
  "ok": true,
  "mode": "schema_drift_guard",
  "verdict": "no_breaking_change_detected",
  "breaking": []
}