ToolVet
78trust / 100

Transcribe

by AgentFeed in AI models & inference

x402 APIPassing, checked 3 h ago

Speech to text: the text, timed segments and the spoken language for mp3, wav, m4a, ogg or webm audio (10 MB, 5 minutes, checked from the file). Use when you need to answer: What is said in this audio file? Cached 24 hours by the audio itself.

GET
https://x402.ochinimus.app/api/transcribe
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
201 ms
205 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

How to call it

GET https://x402.ochinimus.app/api/transcribe

Each call costs $0.01 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://x402.ochinimus.app/api/transcribe?url=https%3A%2F%2Fwww.w3schools.com%2Fhtml%2Fhorse.mp3

Parameters

ParameterTypeRequiredDescription
urlstringYesthe audio file: an absolute http or https URL

Example response

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

{
  "data": {
    "audio": {
      "bytes": 28915,
      "seconds": 1.54,
      "sha256": "228648cf11aedfacb3b3d22166aeab616a45afbef1c1ad702140563e74e39a62",
      "type": "audio/mpeg"
    },
    "cached": false,
    "fetched_at": "2026-10-14T06:27:44.165Z",
    "final_url": "https://www.w3schools.com/html/horse.mp3",
    "language": "und",
    "model": "gemini-3.5-flash-lite",
    "no_speech_found": true,
    "segments": [],
    "source_url": "https://www.w3schools.com/html/horse.mp3",
    "text": ""
  },
  "paid": true,
  "tool": "get_transcribe"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

The code pays $0.01 in USDC on Base instead: it uses a payment scheme other than exact, which needs a different client setup.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://x402.ochinimus.app/api/transcribe?url=https%3A%2F%2Fwww.w3schools.com%2Fhtml%2Fhorse.mp3'

# 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://x402.ochinimus.app/api/transcribe?url=https%3A%2F%2Fwww.w3schools.com%2Fhtml%2Fhorse.mp3' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.ochinimus.app%2Fapi%2Ftranscribe
const res = await pay("https://x402.ochinimus.app/api/transcribe?url=https%3A%2F%2Fwww.w3schools.com%2Fhtml%2Fhorse.mp3");
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://x402.ochinimus.app/api/transcribe?url=https%3A%2F%2Fwww.w3schools.com%2Fhtml%2Fhorse.mp3")
    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 agoPassed402201 ms$0.01
7 h agoPassed402177 ms$0.01
11 h agoPassed402205 ms$0.01
21 h agoPassed402235 ms$0.01