Dev Json Formatter
by AgentTools in Onchain & crypto
Validate JSON with precise error messages, pretty-print it with any indent, and inspect its top-level type and element counts. Use this when an agent needs to validate, pretty-print and inspect JSON.
GET https://agentstoolshub.com/api/v1/dev/json-formatter
Last 30 days
Status and outage history · Atom feed
- Uptime
- 100%
- Response time
- 161 ms typical, 309 ms slowest 5%
- Last check
- 1 h ago
- Next check
- any minute now
How to call it
GET https://agentstoolshub.com/api/v1/dev/json-formatter
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.
GET https://agentstoolshub.com/api/v1/dev/json-formatter?indent=2&json=%7B%22name%22%3A%22Ada%22%2C%22langs%22%3A%5B%22ts%22%2C%22py%22%5D%2C%22active%22%3Atrue%7DParameters
| Parameter | Type | Required | Description |
|---|---|---|---|
indent | number | No | Indent spaces |
json | string | Yes | JSON |
Example response
The provider's example. We can't check it without paying.
Example response, 30 lines
{
"result": {
"answer": "{\n \"name\": \"Ada\",\n \"langs\": [\n \"ts\",\n \"py\"\n ],\n \"active\": true\n}",
"answerLabel": "Valid JSON ✓",
"details": [
{
"label": "Top-level type",
"value": "object"
},
{
"label": "Top-level keys",
"value": "3"
},
{
"label": "Minified size",
"value": "48 chars"
},
{
"label": "Formatted size",
"value": "74 chars"
}
],
"steps": [
"JSON.parse validated the syntax",
"Re-stringified with 2-space indent"
],
"value": null
},
"tool": "json-formatter"
}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 'https://agentstoolshub.com/api/v1/dev/json-formatter?indent=2&json=%7B%22name%22%3A%22Ada%22%2C%22langs%22%3A%5B%22ts%22%2C%22py%22%5D%2C%22active%22%3Atrue%7D'
# 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 - 'https://agentstoolshub.com/api/v1/dev/json-formatter?indent=2&json=%7B%22name%22%3A%22Ada%22%2C%22langs%22%3A%5B%22ts%22%2C%22py%22%5D%2C%22active%22%3Atrue%7D' \
| 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%2Fagentstoolshub.com%2Fapi%2Fv1%2Fdev%2Fjson-formatter
const res = await pay("https://agentstoolshub.com/api/v1/dev/json-formatter?indent=2&json=%7B%22name%22%3A%22Ada%22%2C%22langs%22%3A%5B%22ts%22%2C%22py%22%5D%2C%22active%22%3Atrue%7D");
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.get("https://agentstoolshub.com/api/v1/dev/json-formatter?indent=2&json=%7B%22name%22%3A%22Ada%22%2C%22langs%22%3A%5B%22ts%22%2C%22py%22%5D%2C%22active%22%3Atrue%7D")
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 | Passed | 402 | 220 ms | $0.002 |
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| 39 h ago | Passed | 402 | 156 ms | $0.002 |
| 43 h ago | Passed | 402 | 168 ms | $0.002 |
| 46 h ago | Passed | 402 | 150 ms | $0.002 |
| 2 days ago | Passed | 402 | 183 ms | $0.002 |
| 2 days ago | Passed | 402 | 157 ms | $0.002 |