Json Repair
by Vextorium in AI models & inference
Repair broken JSON, typical of LLM output: strips ```json fences, comments and surrounding text, trailing commas, single quotes, unquoted keys, Python True/None and unclosed brackets. Returns the object and clean JSON and, if you pass a JSON Schema, whether it validates and why not.
POST https://api.vextorium.com/v1/json-repair
Last 30 days
Status and outage history · Atom feed
- Uptime
- 0.0%
- Response time
- - typical, - slowest 5%
- Last check
- 1 h ago: Amount "0.002" is not in atomic token units
- Next check
- any minute now
How to call it
POST https://api.vextorium.com/v1/json-repair
Each call costs $0.002 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-repair
content-type: application/json
{
"text": "```json\n{name: 'Ana', 'edad': 30, activo: True, tags: ['a','b',],"
}Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
schema | object | No | optional JSON Schema |
text | string | Yes |
Example response
The provider's example. We can't check it without paying.
{
"json": "{\"name\": \"Ana\", \"edad\": 30, \"activo\": true, \"tags\": [\"a\", \"b\"]}",
"object": {
"age": 30,
"asset": true,
"name": "Ana",
"tags": [
"a",
"b"
]
},
"repaired": true,
"was_already_valid": false
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.
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-repair' \
-H 'content-type: application/json' \
--data-raw '{"text":"```json\n{name: '\''Ana'\'', '\''edad'\'': 30, activo: True, tags: ['\''a'\'','\''b'\'',],"}'
# 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-repair' \
-H 'content-type: application/json' \
--data-raw '{"text":"```json\n{name: '\''Ana'\'', '\''edad'\'': 30, activo: True, tags: ['\''a'\'','\''b'\'',],"}' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fjson-repair&method=POST
const res = await pay("https://api.vextorium.com/v1/json-repair", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"text": "```json\n{name: 'Ana', 'edad': 30, activo: True, tags: ['a','b',],"
}),
});
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
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-repair",
json={
"text": "```json\n{name: 'Ana', 'edad': 30, activo: True, tags: ['a','b',],",
},
)
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
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 1 h ago | Amount "0.002" is not in atomic token units | 402 | 85 ms | $0.002 |
| 6 h ago | Amount "0.002" is not in atomic token units | 402 | 127 ms | $0.002 |
| 10 h ago | Amount "0.002" is not in atomic token units | 402 | 102 ms | $0.002 |
| 15 h ago | Amount "0.002" is not in atomic token units | 402 | 71 ms | $0.002 |
| 19 h ago | Amount "0.002" is not in atomic token units | 402 | 79 ms | $0.002 |
| 23 h ago | Amount "0.002" is not in atomic token units | 402 | 93 ms | $0.002 |
| 28 h ago | Amount "0.002" is not in atomic token units | 402 | 111 ms | $0.002 |
| 32 h ago | Amount "0.002" is not in atomic token units | 402 | 84 ms | $0.002 |
| 36 h ago | Amount "0.002" is not in atomic token units | 402 | 77 ms | $0.002 |
| 40 h ago | Amount "0.002" is not in atomic token units | 402 | 77 ms | $0.002 |
| 44 h ago | Amount "0.002" is not in atomic token units | 402 | 94 ms | $0.002 |
| 2 days ago | Amount "0.002" is not in atomic token units | 402 | 81 ms | $0.002 |
| 2 days ago | Amount "0.002" is not in atomic token units | 402 | 148 ms | $0.002 |
| 2 days ago | Amount "0.002" is not in atomic token units | 402 | 82 ms | $0.002 |
| 3 days ago | Amount "0.002" is not in atomic token units | 402 | 77 ms | $0.002 |