ToolVet
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Skill Decode Blob

by Skill: Decode this blob in Developer tools

x402 APIPassing, checked 3 h ago

Hand the agent an opaque string - a JWT, a base64'd JSON payload, a gzip-encoded API response, a hex-encoded hash - and walk it through identifying what it is and unwrapping it layer by layer until it's human-readable. Decode this blob skill pack: one x402 payment runs 7 underlying tools (jwt-decode, gunzip, brotli-decompress, base64, hex, json-format, hash); partial-success per step.

POST
https://agent402.tools/api/skill/decode-blob
Price
$0.007
per call in USDC
Uptime
100%
last 30 days
Response time
197 ms
455 ms slowest 5%
Last check
Passed
3 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://agent402.tools/api/skill/decode-blob

Each call costs $0.007 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://agent402.tools/api/skill/decode-blob
content-type: application/json

{
  "blob": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ"
}

Parameters

ParameterTypeRequiredDescription
blobstringYesThe opaque string to identify and decode

Example response

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

Example response, 44 lines
{
  "args": {
    "blob": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ"
  },
  "pack": "decode-blob",
  "steps": [
    {
      "ok": true,
      "result": {},
      "slug": "jwt-decode"
    },
    {
      "ok": true,
      "result": {},
      "slug": "gunzip"
    },
    {
      "ok": true,
      "result": {},
      "slug": "brotli-decompress"
    },
    {
      "ok": true,
      "result": {},
      "slug": "base64"
    },
    {
      "ok": true,
      "result": {},
      "slug": "hex"
    },
    {
      "ok": true,
      "result": {},
      "slug": "json-format"
    },
    {
      "ok": true,
      "result": {},
      "slug": "hash"
    }
  ],
  "summary": "7/7 steps succeeded"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.007.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://agent402.tools/api/skill/decode-blob' \
  -H 'content-type: application/json' \
  --data-raw '{"blob":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ"}'

# 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://agent402.tools/api/skill/decode-blob' \
  -H 'content-type: application/json' \
  --data-raw '{"blob":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ"}' \
  | 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 $0.007 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.007" });
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 $0.007 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fskill%2Fdecode-blob&method=POST
const res = await pay("https://agent402.tools/api/skill/decode-blob", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "blob": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ"
  }),
});
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 $0.007 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.007"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://agent402.tools/api/skill/decode-blob",
        json={
            "blob": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402380 ms$0.007
8 h agoPassed402217 ms$0.007
13 h agoPassed402197 ms$0.007
17 h agoPassed402198 ms$0.007
22 h agoPassed402197 ms$0.007
Show 10 older checks
26 h agoPassed402190 ms$0.007
30 h agoPassed402195 ms$0.007
34 h agoPassed402196 ms$0.007
38 h agoPassed402199 ms$0.007
42 h agoPassed402190 ms$0.007
46 h agoPassed402289 ms$0.007
2 days agoPassed402193 ms$0.007
2 days agoPassed402191 ms$0.007
2 days agoPassed402203 ms$0.007
3 days agoPassed402267 ms$0.007