ToolVet
80trust / 100

Count

by LLM Token Counter in Onchain & crypto

x402 APIPassing, checked 3 h ago

Exact token count for text using OpenAI tokenizers. Body: {text, encoding?} where encoding is cl100k_base or o200k_base (default). Returns tokens and char_count. Use to budget prompts and context windows.

POST
https://x402.shizu.me/count
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
19 ms
128 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://x402.shizu.me/count

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://x402.shizu.me/count
content-type: application/json

{
  "encoding": "o200k_base",
  "text": "hello world"
}

Parameters

ParameterTypeRequiredDescription
encodinganyYes
textanyYes

Example response

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

{
  "char_count": 11,
  "encoding": "o200k_base",
  "tokens": 2
}

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://x402.shizu.me/count' \
  -H 'content-type: application/json' \
  --data-raw '{"encoding":"o200k_base","text":"hello world"}'

# 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://x402.shizu.me/count' \
  -H 'content-type: application/json' \
  --data-raw '{"encoding":"o200k_base","text":"hello world"}' \
  | 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 $0.002 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%2Fx402.shizu.me%2Fcount&method=POST
const res = await pay("https://x402.shizu.me/count", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "encoding": "o200k_base",
    "text": "hello world"
  }),
});
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://x402.shizu.me/count",
        json={
            "encoding": "o200k_base",
            "text": "hello world",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed40210 ms$0.002
7 h agoPassed40225 ms$0.002
11 h agoPassed40214 ms$0.002
15 h agoPassed40222 ms$0.002
20 h agoPassed402137 ms$0.002
Show 10 older checks
24 h agoPassed402106 ms$0.002
28 h agoPassed40215 ms$0.002
32 h agoPassed4026 ms$0.002
36 h agoPassed40219 ms$0.002
40 h agoPassed40281 ms$0.002
44 h agoPassed4023 ms$0.002
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