ToolVet
78trust / 100

Transcribe

by Citiview Agent Market in AI models & inference

x402 APIPassing, checked 4 h ago

Speech to text (Whisper large v3 turbo). Send a public audio/video URL or base64 audio (max 20 MB); get the transcript, detected language, timed segments and WebVTT subtitles. Also callable as GET with the same fields as query parameters.

GET
https://agents.citiviewgroup.com/v1/transcribe
Price
$0.011
per call in USDC
Uptime
100%
last 30 days
Response time
81 ms
1.8 s slowest 5%
Last check
Passed
4 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

GET https://agents.citiviewgroup.com/v1/transcribe

Each call costs $0.011 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.

GET https://agents.citiviewgroup.com/v1/transcribe?url=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fc%2Fc8%2FExample.ogg

Parameters

ParameterTypeRequiredDescription
audio_base64stringNoAlternative to url: base64 audio bytes
languagestringNoOptional ISO 639-1 hint, e.g. en
urlstringNoPublic URL of an audio or video file (mp3, wav, m4a, ogg, webm, mp4)

Example response

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

{
  "duration_seconds": 3.1,
  "language": "en",
  "segments": [
    {
      "end": 3.1,
      "start": 0,
      "text": "Hello from Citiview Agent Market."
    }
  ],
  "text": "Hello from Citiview Agent Market.",
  "vtt": "WEBVTT ...",
  "word_count": 4
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.011.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://agents.citiviewgroup.com/v1/transcribe?url=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fc%2Fc8%2FExample.ogg'

# 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 - 'https://agents.citiviewgroup.com/v1/transcribe?url=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fc%2Fc8%2FExample.ogg' \
  | 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 $0.011 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.011" });
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 $0.011 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagents.citiviewgroup.com%2Fv1%2Ftranscribe
const res = await pay("https://agents.citiviewgroup.com/v1/transcribe?url=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fc%2Fc8%2FExample.ogg");
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 $0.011 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.011"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://agents.citiviewgroup.com/v1/transcribe?url=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fc%2Fc8%2FExample.ogg")
    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
4 h agoPassed4021.8 s$0.011
8 h agoPassed40281 ms$0.011
12 h agoPassed402315 ms$0.011
16 h agoPassed4021.4 s$0.011
21 h agoPassed402144 ms$0.011
Show 7 older checks
25 h agoPassed40243 ms$0.011
29 h agoPassed4021.0 s$0.02
33 h agoPassed40278 ms$0.02
37 h agoPassed40264 ms$0.02
41 h agoPassed402128 ms$0.02
45 h agoPassed40235 ms$0.02
2 days agoPassed40250 ms$0.02

History

14 Oct 2026Price changed from $0.02 to $0.011