ToolVet
78trust / 100

Json Repair

by SiteCheck in Developer tools

x402 APIPassing, checked 2 h ago

Repairs broken JSON: markdown fences, comments, trailing commas, single quotes, unquoted keys, Python literals (True, False, None) and truncated endings. Pure code first; the model is asked once only when code cannot repair it. Optional JSON Schema check covers type, required, properties, items, enum, minimum, maximum, minLength, maxLength and pattern. Input max 1 MB.

POST
https://api.sitecheck-api.workers.dev/api/json/repair
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
175 ms
175 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.sitecheck-api.workers.dev/api/json/repair

Each call costs $0.001 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.sitecheck-api.workers.dev/api/json/repair
content-type: application/json

{
  "schema": {
    "required": [
      "name"
    ],
    "type": "object"
  },
  "text": "{'name': 'Ada', 'langs': ['en', 'fr',], // comment\n"
}

Parameters

ParameterTypeRequiredDescription
schemaobjectNoOptional JSON Schema to validate the repaired value against
textstringYesThe broken JSON text (max 1 MB)

Example response

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

{
  "checkedAt": "2026-10-15T18:21:12.802Z",
  "fixes": [
    "replaced single quotes or removed comments",
    "removed trailing commas",
    "closed unbalanced brackets"
  ],
  "problems": [],
  "usedModel": false,
  "valid": true,
  "value": {
    "langs": [
      "en",
      "fr"
    ],
    "name": "Ada"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.sitecheck-api.workers.dev/api/json/repair' \
  -H 'content-type: application/json' \
  --data-raw '{"schema":{"required":["name"],"type":"object"},"text":"{'\''name'\'': '\''Ada'\'', '\''langs'\'': ['\''en'\'', '\''fr'\'',], // comment\n"}'

# 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.sitecheck-api.workers.dev/api/json/repair' \
  -H 'content-type: application/json' \
  --data-raw '{"schema":{"required":["name"],"type":"object"},"text":"{'\''name'\'': '\''Ada'\'', '\''langs'\'': ['\''en'\'', '\''fr'\'',], // comment\n"}' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fjson%2Frepair&method=POST
const res = await pay("https://api.sitecheck-api.workers.dev/api/json/repair", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "schema": {
      "required": [
        "name"
      ],
      "type": "object"
    },
    "text": "{'name': 'Ada', 'langs': ['en', 'fr',], // comment\n"
  }),
});
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
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.sitecheck-api.workers.dev/api/json/repair",
        json={
            "schema": {
                "required": [
                    "name",
                ],
                "type": "object",
            },
            "text": "{'name': 'Ada', 'langs': ['en', 'fr',], // comment\n",
        },
    )
    print(res.status_code, res.text)

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Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402175 ms$0.001