ToolVet
16trust / 100

Number Base Convert

by Vextorium in Documents & files

x402 APIFailing, checked 3 h ago

Convert integers of any size (signed) between bases 2 to 36: binary, octal, decimal, hex, base32, base36, with bit and byte length and two's complement. Accepts 0x/0b/0o prefixes.

POST https://api.vextorium.com/v1/number-base-convert

Last 30 days

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Status and outage history · Atom feed

Uptime
0.0%
Response time
- typical, - slowest 5%
Last check
3 h ago: Amount "0.003" is not in atomic token units
Next check
any minute now

How to call it

POST https://api.vextorium.com/v1/number-base-convert

Each call costs $0.003 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/number-base-convert
content-type: application/json

{
  "a": [
    2,
    8,
    10,
    16
  ],
  "value": "0xff"
}

Parameters

ParameterTypeRequiredDescription
aarray of integerNoOutput bases (default 2,8,10,16,36)
fromintegerNoInput base (default 10)
valuestringYes

Example response

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

{
  "bits": 8,
  "bytes": 1,
  "conversions": {
    "2": "11111111",
    "8": "377",
    "10": "255",
    "16": "ff"
  },
  "decimal": "255",
  "input": "0xff",
  "input_base": 16
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

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/number-base-convert' \
  -H 'content-type: application/json' \
  --data-raw '{"a":[2,8,10,16],"value":"0xff"}'

# 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/number-base-convert' \
  -H 'content-type: application/json' \
  --data-raw '{"a":[2,8,10,16],"value":"0xff"}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fnumber-base-convert&method=POST
const res = await pay("https://api.vextorium.com/v1/number-base-convert", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "a": [
      2,
      8,
      10,
      16
    ],
    "value": "0xff"
  }),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
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/number-base-convert",
        json={
            "a": [
                2,
                8,
                10,
                16,
            ],
            "value": "0xff",
        },
    )
    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

WhenResultHTTPTimePrice
3 h agoAmount "0.003" is not in atomic token units402235 ms$0.003
7 h agoAmount "0.003" is not in atomic token units402196 ms$0.003
12 h agoAmount "0.003" is not in atomic token units40292 ms$0.003
16 h agoAmount "0.003" is not in atomic token units40287 ms$0.003
20 h agoAmount "0.003" is not in atomic token units402108 ms$0.003
24 h agoAmount "0.003" is not in atomic token units40283 ms$0.003
28 h agoAmount "0.003" is not in atomic token units40292 ms$0.003
32 h agoAmount "0.003" is not in atomic token units40271 ms$0.003
36 h agoAmount "0.003" is not in atomic token units40283 ms$0.003
40 h agoAmount "0.003" is not in atomic token units40285 ms$0.003
44 h agoAmount "0.003" is not in atomic token units40278 ms$0.003
2 days agoAmount "0.003" is not in atomic token units40281 ms$0.003
2 days agoAmount "0.003" is not in atomic token units40297 ms$0.003
2 days agoAmount "0.003" is not in atomic token units40280 ms$0.003
3 days agoAmount "0.003" is not in atomic token units40287 ms$0.003