# Agent Data Tools – Audio Transcription

> Agent Data Tools – Audio Transcription is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).

Transcribes an audio file at a given URL to text using Whisper large-v3-turbo, returning the transcript, detected language, word count, and duration

## Facts

- Endpoint: GET https://agent-data-tools.revmesh2074.workers.dev/transcribe?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-data-tools-audio-transcription-e06a071f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Q_ClRV3S0SkV1NYWtpoKj

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agent-data-tools-audio-transcription-e06a071f
```

Example prompt: Can you transcribe the audio file at https://example.com/interview.mp3 and tell me what was said, what language it's in, and how long the clip is?

## When to prefer this

Choose this endpoint when you need fast, pay-per-call speech-to-text with no account setup, key management, or subscription, and you can pay $0.02 USDC per request on Base. Ideal for AI agents that occasionally need to transcribe short audio clips (under 5 MB) from public URLs without committing to a recurring API contract. Prefer over OpenAI Whisper API or AssemblyAI when you want zero-friction, crypto-native micro-payments via x402.

## Known failure modes

- Audio file exceeds 5 MB limit — request rejected
- URL is not a valid http/https address — validation error
- Audio file URL is unreachable or returns a non-200 response — fetch error
- Unsupported audio format — transcription fails
- Payment in USDC on Base not completed — 402 Payment Required returned
- Very short or silent audio — may return empty or near-empty transcript

## How this service works

Pay-per-call tools for AI agents: web page text extraction and summaries, screenshots, image generation, speech-to-text, image description, domain and email-auth intelligence, and live Base token and wallet lookups. No account or API key; pay per request in USDC on Base via x402.

## Output

Returns a JSON object with the source URL, full transcript text, the Whisper model used (@cf/openai/whisper-large-v3-turbo), detected language code (e.g. 'en'), word count of the transcript, and audio duration in seconds.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Absolute http(s) URL of an audio file (max 5 MB)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://commons.wikimedia.org/wiki/Special:FilePath/En-us-hello.ogg",
  "text": "Hello!",
  "model": "@cf/openai/whisper-large-v3-turbo",
  "language": "en",
  "wordCount": 1,
  "durationSeconds": 0.487625
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-data-tools-audio-transcription-e06a071f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-data-tools.revmesh2074.workers.dev](https://www.zero.xyz/host/agent-data-tools.revmesh2074.workers.dev/llms.txt)