ToolVet
78trust / 100

Text Tone

by SiteCheck in Search & web

x402 APIPassing, checked 2 h ago

Tone analysis of a text (max 10,000 characters): formality 0-1, sentiment, emotion scores, tone labels such as friendly, aggressive or urgent, and short suggestions. The reading level (Flesch-Kincaid grade) is computed in code with a simple syllable count, so treat it as an estimate. Model judgements are not measurements.

POST
https://api.sitecheck-api.workers.dev/api/text/tone
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
39 ms
39 ms slowest 5%
Last check
Passed
2 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://api.sitecheck-api.workers.dev/api/text/tone

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://api.sitecheck-api.workers.dev/api/text/tone
content-type: application/json

{
  "text": "Hi team, thanks for the quick reply. Could you send the report by Friday? Much appreciated."
}

Parameters

ParameterTypeRequiredDescription
textstringYesText to analyse (max 10,000 characters)

Example response

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

{
  "checkedAt": "2026-10-15T18:21:18.118Z",
  "emotions": {
    "appreciation": 0.8,
    "gratitude": 0.9
  },
  "formality": 0.8,
  "note": "Model-based tone and sentiment; the reading level is an estimate.",
  "readingLevel": {
    "fleschKincaidGrade": 2.7,
    "method": "Flesch-Kincaid grade, vowel-group syllable estimate, computed in code"
  },
  "sentiment": "positive",
  "suggestions": [
    "Consider adding a deadline reminder",
    "Use a more direct tone for urgent requests",
    "Be mindful of the team's workload"
  ],
  "tones": [
    "friendly",
    "polite"
  ]
}

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://api.sitecheck-api.workers.dev/api/text/tone' \
  -H 'content-type: application/json' \
  --data-raw '{"text":"Hi team, thanks for the quick reply. Could you send the report by Friday? Much appreciated."}'

# 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.sitecheck-api.workers.dev/api/text/tone' \
  -H 'content-type: application/json' \
  --data-raw '{"text":"Hi team, thanks for the quick reply. Could you send the report by Friday? Much appreciated."}' \
  | 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%2Fapi.sitecheck-api.workers.dev%2Fapi%2Ftext%2Ftone&method=POST
const res = await pay("https://api.sitecheck-api.workers.dev/api/text/tone", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "text": "Hi team, thanks for the quick reply. Could you send the report by Friday? Much appreciated."
  }),
});
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://api.sitecheck-api.workers.dev/api/text/tone",
        json={
            "text": "Hi team, thanks for the quick reply. Could you send the report by Friday? Much appreciated.",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
2 h agoPassed40239 ms$0.002