OpenAPI payload validator · Openapi Validate Payload

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

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://agent402.tools/api/openapi-validate-payload", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "operationId": "createUser",
    "part": "request",
    "payload": {
      "age": "thirty",
      "extra": "noise",
      "name": "Alice"
    },
    "spec": {
      "openapi": "3.0.0",
      "paths": {
        "/users": {
          "post": {
            "operationId": "createUser",
            "requestBody": {
              "content": {
                "application/json": {
                  "schema": {
                    "additionalProperties": false,
                    "properties": {
                      "age": {
                        "type": "integer"
                      },
                      "email": {
                        "type": "string"
                      },
                      "name": {
                        "type": "string"
                      },
                      "role": {
                        "enum": [
                          "admin",
                          "user"
                        ],
                        "type": "string"
                      }
                    },
                    "required": [
                      "name",
                      "email"
                    ],
                    "type": "object"
                  }
                }
              }
            },
            "responses": {
              "201": {
                "description": "ok"
              }
            }
          }
        }
      }
    }
  }),
});
const data = await res.json();

curl -X POST \
  "https://agent402.tools/api/openapi-validate-payload" \
  -H "Content-Type: application/json" \
  -d '{"operationId":"createUser","part":"request","payload":{"age":"thirty","extra":"noise","name":"Alice"},"spec":{"openapi":"3.0.0","paths":{"/users":{"post":{"operationId":"createUser","requestBody":{"content":{"application/json":{"schema":{"additionalProperties":false,"properties":{"age":{"type":"integer"},"email":{"type":"string"},"name":{"type":"string"},"role":{"enum":["admin","user"],"type":"string"}},"required":["name","email"],"type":"object"}}}},"responses":{"201":{"description":"ok"}}}}}}}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "errors": [
    {
      "message": "missing required field: email",
      "path": "",
      "rule": "required"
    },
    {
      "message": "expected integer, got string",
      "path": ".age",
      "rule": "type"
    },
    {
      "message": "unexpected property: extra",
      "path": ".extra",
      "rule": "additionalProperties"
    }
  ],
  "schemaPresent": true,
  "valid": false
}