ToolVet
72trust / 100

Jwt

by Artifact Inspector in Onchain & crypto

x402 APIPassing, checked 3 h ago

JSON Web Token (JWT) decoder — parse an unverified compact JWS header and claims and evaluate advisory NumericDate times without signature verification or URL fetching.

POST
https://artifact-inspector.use.x402atlas.com/jwt
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
451 ms
554 ms slowest 5%
Last check
Passed
3 h ago, next in 3 h

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

POST https://artifact-inspector.use.x402atlas.com/jwt

Each call costs $0.005 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://artifact-inspector.use.x402atlas.com/jwt
content-type: application/json

{
  "at_time": "2024-06-01T12:00:00Z",
  "token": "eyJhbGciOiJIUzI1NiIsImtpZCI6InN5bnRoZXRpYy1leGFtcGxlIiwidHlwIjoiSldUIn0.eyJhdWQiOiJhcnRpZmFjdC1pbnNwZWN0b3IiLCJleHAiOjE3MTcyODY0MDAsImlhdCI6MTcxNzIwMDAwMCwiaXNzIjoieDQwMkF0bGFzIHN5bnRoZXRpYyIsIm5iZiI6MTcxNzIwMDAwMCwic3ViIjoiYWdlbnQtZGVtbyJ9.c3ludGhldGljLW5vdC1hLXJlYWwtc2lnbmF0dXJl"
}

Parameters

ParameterTypeRequiredDescription
at_timestring (date-time)YesFixed RFC3339 instant for advisory NumericDate comparisons
tokenstringYesOne compact three-segment JWS; decoded only and never verified

Example response

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

Example response, 37 lines
{
  "algorithm_version": "jwt-unverified-decode-v1",
  "at_time": "2024-06-01T12:00:00Z",
  "claims": {
    "aud": "artifact-inspector",
    "exp": 1717286400,
    "iat": 1717200000,
    "iss": "x402Atlas synthetic",
    "nbf": 1717200000,
    "sub": "agent-demo"
  },
  "header": {
    "alg": "HS256",
    "kid": "synthetic-example",
    "typ": "JWT"
  },
  "operation": "jwt-decode",
  "signature_bytes": 30,
  "signature_status": "not_verified",
  "temporal": {
    "expiration": {
      "status": "valid",
      "value": 1717286400
    },
    "issued_at": {
      "status": "past_or_present",
      "value": 1717200000
    },
    "not_before": {
      "status": "active",
      "value": 1717200000
    }
  },
  "warnings": [
    "JWT signature and claims were decoded but not verified; treat all values as untrusted."
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://artifact-inspector.use.x402atlas.com/jwt' \
  -H 'content-type: application/json' \
  --data-raw '{"at_time":"2024-06-01T12:00:00Z","token":"eyJhbGciOiJIUzI1NiIsImtpZCI6InN5bnRoZXRpYy1leGFtcGxlIiwidHlwIjoiSldUIn0.eyJhdWQiOiJhcnRpZmFjdC1pbnNwZWN0b3IiLCJleHAiOjE3MTcyODY0MDAsImlhdCI6MTcxNzIwMDAwMCwiaXNzIjoieDQwMkF0bGFzIHN5bnRoZXRpYyIsIm5iZiI6MTcxNzIwMDAwMCwic3ViIjoiYWdlbnQtZGVtbyJ9.c3ludGhldGljLW5vdC1hLXJlYWwtc2lnbmF0dXJl"}'

# 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://artifact-inspector.use.x402atlas.com/jwt' \
  -H 'content-type: application/json' \
  --data-raw '{"at_time":"2024-06-01T12:00:00Z","token":"eyJhbGciOiJIUzI1NiIsImtpZCI6InN5bnRoZXRpYy1leGFtcGxlIiwidHlwIjoiSldUIn0.eyJhdWQiOiJhcnRpZmFjdC1pbnNwZWN0b3IiLCJleHAiOjE3MTcyODY0MDAsImlhdCI6MTcxNzIwMDAwMCwiaXNzIjoieDQwMkF0bGFzIHN5bnRoZXRpYyIsIm5iZiI6MTcxNzIwMDAwMCwic3ViIjoiYWdlbnQtZGVtbyJ9.c3ludGhldGljLW5vdC1hLXJlYWwtc2lnbmF0dXJl"}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fartifact-inspector.use.x402atlas.com%2Fjwt&method=POST
const res = await pay("https://artifact-inspector.use.x402atlas.com/jwt", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "at_time": "2024-06-01T12:00:00Z",
    "token": "eyJhbGciOiJIUzI1NiIsImtpZCI6InN5bnRoZXRpYy1leGFtcGxlIiwidHlwIjoiSldUIn0.eyJhdWQiOiJhcnRpZmFjdC1pbnNwZWN0b3IiLCJleHAiOjE3MTcyODY0MDAsImlhdCI6MTcxNzIwMDAwMCwiaXNzIjoieDQwMkF0bGFzIHN5bnRoZXRpYyIsIm5iZiI6MTcxNzIwMDAwMCwic3ViIjoiYWdlbnQtZGVtbyJ9.c3ludGhldGljLW5vdC1hLXJlYWwtc2lnbmF0dXJl"
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://artifact-inspector.use.x402atlas.com/jwt",
        json={
            "at_time": "2024-06-01T12:00:00Z",
            "token": "eyJhbGciOiJIUzI1NiIsImtpZCI6InN5bnRoZXRpYy1leGFtcGxlIiwidHlwIjoiSldUIn0.eyJhdWQiOiJhcnRpZmFjdC1pbnNwZWN0b3IiLCJleHAiOjE3MTcyODY0MDAsImlhdCI6MTcxNzIwMDAwMCwiaXNzIjoieDQwMkF0bGFzIHN5bnRoZXRpYyIsIm5iZiI6MTcxNzIwMDAwMCwic3ViIjoiYWdlbnQtZGVtbyJ9.c3ludGhldGljLW5vdC1hLXJlYWwtc2lnbmF0dXJl",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

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3 h agoPassed402461 ms$0.005
7 h agoPassed402476 ms$0.005
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Show 10 older checks
24 h agoPassed402552 ms$0.005
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40 h agoPassed402437 ms$0.005
44 h agoPassed402490 ms$0.005
2 days agoPassed402463 ms$0.005
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2 days agoPassed402430 ms$0.005
2 days agoPassed402437 ms$0.005