# Sift Web Tools – Speech-to-Text Transcription

> Sift Web Tools – Speech-to-Text Transcription is a paid API for AI agents from sift.srv1996466.hstgr.cloud, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-23).

Transcribes speech from an audio or video file URL using OpenAI Whisper, returning timestamped text, SRT, or VTT subtitles in up to 99 languages.

## Facts

- Endpoint: GET https://sift.srv1996466.hstgr.cloud/v1/transcribe?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sift-web-tools-speech-to-text-transcription-020bea2c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gbh3zMRLQPjoJhcygyj19

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 sift-web-tools-speech-to-text-transcription-020bea2c
```

Example prompt: Can you transcribe the audio at https://example.com/interview.mp3 and give me the result as an SRT file with timestamps?

## When to prefer this

Choose this endpoint when you need fast, affordable speech-to-text transcription from a public audio or video URL (up to 5 minutes / 80 MB), especially when you need timestamped segments or ready-made SRT/VTT subtitle files. It is ideal for podcast transcription, video captioning, meeting notes, and multilingual content (99 languages auto-detected). At $0.02 per call it is cost-effective for single-file transcription tasks.

## Known failure modes

- File exceeds 80 MB or 5 minutes — likely returns an error or truncated result
- Unsupported file format — endpoint may return an error for formats other than mp3, wav, m4a, mp4, webm, etc.
- Unreachable URL — if the audio/video URL is not publicly accessible, transcription fails
- Very noisy or silent audio — may produce empty or garbled text with no clear error
- Invalid language code — may fall back to auto-detect or return an error
- Payment not completed — x402 payment required; missing payment returns 402 response

## How this service works

Speech to text from an audio or video file URL (up to 5 minutes), with timestamps, SRT or VTT. Transcribes speech in an audio or video file (mp3, wav, m4a, mp4, webm and more; up to 80 MB and 5 minutes) with OpenAI Whisper running on our own servers. Auto-detects the language (99 languages). Returns text with segment timestamps, or ready-made SRT or VTT subtitles.

## Output

Returns a JSON object with the full transcribed text, detected language code, total duration in seconds, and an array of segments each containing start time, end time, and text. If format=srt or format=vtt is requested, returns a ready-made subtitle file string instead. If format=text, returns plain text only.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Audio or video file URL"
      },
      "format": {
       "type": "string",
       "description": "json, text, srt or vtt (default json)"
      },
      "language": {
       "type": "string",
       "description": "Two-letter language code, e.g. en (default auto-detect)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "text": "The quick brown fox jumps over the lazy dog.",
  "language": "en",
  "segments": [
   {
    "end": 3.2,
    "text": "The quick brown fox jumps over the lazy dog.",
    "start": 0
   }
  ],
  "duration_s": 4.1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sift-web-tools-speech-to-text-transcription-020bea2c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sift.srv1996466.hstgr.cloud](https://www.zero.xyz/host/sift.srv1996466.hstgr.cloud/llms.txt)