ToolVet
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Json Schema Generate

by Vextorium in AI models & inference

x402 APIFailing, checked 20 min ago

Generate a JSON Schema (draft 2020-12) from an example JSON: types, properties, arrays, required fields and formats (date, date-time, email, uri). For API docs, tool definitions and output validation.

POST
https://api.vextorium.com/v1/json-schema-generate
Price
$0.003
per call in USDC
Uptime
0.0%
last 30 days
Response time
-
no timed checks yet
Last check
Failed
20 min ago, next in 36 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 20 min ago: Amount "0.003" is not in atomic token units

Status and outage history · Atom feed

How to call it

POST https://api.vextorium.com/v1/json-schema-generate

Each call costs $0.003 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.vextorium.com/v1/json-schema-generate
content-type: application/json

{
  "example": {
    "created": "2026-10-02",
    "email": "[email protected]",
    "id": 1,
    "tags": [
      "x"
    ]
  }
}

Parameters

ParameterTypeRequiredDescription
exampleanyYesExample JSON (object or text)

Example response

The provider's example. We can't check it without paying.

Example response, 29 lines
{
  "schema": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "properties": {
      "created": {
        "format": "date",
        "type": "string"
      },
      "email": {
        "format": "email",
        "type": "string"
      },
      "id": {
        "type": "integer"
      },
      "tags": {
        "items": {
          "type": "string"
        },
        "type": "array"
      }
    },
    "required": [
      "id",
      "email"
    ],
    "type": "object"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/json-schema-generate' \
  -H 'content-type: application/json' \
  --data-raw '{"example":{"created":"2026-10-02","email":"[email protected]","id":1,"tags":["x"]}}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.vextorium.com/v1/json-schema-generate' \
  -H 'content-type: application/json' \
  --data-raw '{"example":{"created":"2026-10-02","email":"[email protected]","id":1,"tags":["x"]}}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fjson-schema-generate&method=POST
const res = await pay("https://api.vextorium.com/v1/json-schema-generate", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "example": {
      "created": "2026-10-02",
      "email": "[email protected]",
      "id": 1,
      "tags": [
        "x"
      ]
    }
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/json-schema-generate",
        json={
            "example": {
                "created": "2026-10-02",
                "email": "[email protected]",
                "id": 1,
                "tags": [
                    "x",
                ],
            },
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
20 min agoAmount "0.003" is not in atomic token units402113 ms$0.003
5 h agoAmount "0.003" is not in atomic token units402107 ms$0.003
10 h agoAmount "0.003" is not in atomic token units402105 ms$0.003
15 h agoAmount "0.003" is not in atomic token units402439 ms$0.003
19 h agoAmount "0.003" is not in atomic token units402157 ms$0.003
Show 10 older checks
24 h agoAmount "0.003" is not in atomic token units402104 ms$0.003
29 h agoAmount "0.003" is not in atomic token units40294 ms$0.003
33 h agoAmount "0.003" is not in atomic token units40276 ms$0.003
38 h agoAmount "0.003" is not in atomic token units40285 ms$0.003
42 h agoAmount "0.003" is not in atomic token units40282 ms$0.003
46 h agoAmount "0.003" is not in atomic token units40283 ms$0.003
2 days agoAmount "0.003" is not in atomic token units402109 ms$0.003
2 days agoAmount "0.003" is not in atomic token units40284 ms$0.003
2 days agoAmount "0.003" is not in atomic token units402240 ms$0.003
3 days agoAmount "0.003" is not in atomic token units40282 ms$0.003