# HALOWERK Filler-Cut Audio Editor

> HALOWERK Filler-Cut Audio Editor is a paid API for AI agents from medien.halowerk.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-31).

Removes filler words (uh, um, er, äh, ähm, hm, etc.) and shortens long pauses in an audio or video file, returning a clean edited audio file.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/filler-cut?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-filler-cut-audio-editor-fc661971
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VAtztz3GnWA5s2yQ1lWC1

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 halowerk-filler-cut-audio-editor-fc661971 -d '<json body>'
```

Example prompt: Clean up this podcast interview recording at https://example.com/interview.mp3 — remove all filler words like uh, um, and er, shorten any pause longer than 1.5 seconds down to 0.4 seconds, and return an mp3. The recording is about 35 minutes long.

## When to prefer this

Choose this endpoint when you need automated, programmatic removal of filler words (uh, um, er, äh, ähm) and silence trimming from audio or video recordings up to 60 minutes, especially in an agentic pipeline where no manual DAW editing is practical. It supports multilingual filler detection and custom filler word lists, making it suitable for both English and German content. Prefer this over manual editing tools when processing speed and automation matter, and over generic audio processing APIs when filler-word-specific speech recognition and natural rhythm preservation are required.

## Known failure modes

- File exceeds 60-minute limit — request rejected
- duration_minutes field mismatch causes billing or processing error
- Unsupported audio/video format causes decoding failure
- Public URL inaccessible or returns non-media content
- base64 payload too large for inline submission — should use URL instead
- Language detection fails on low-quality or noisy audio
- Network timeout for very large files fetched by URL

## How this service works

Takes an audio or video file of up to 60 minutes and returns an edited audio file without filler words and with long pauses shortened. Speech is recognised with filler-word detection; every uh, um, er, äh, ähm, hm and similar is cut at its word boundaries, and every pause longer than max_pause_seconds is shortened to keep_pause_seconds rather than removed, so the speech keeps its rhythm.

## Output

An edited audio file (mp3, opus, wav, or flac as requested) with filler words cut at their word boundaries and long pauses shortened to the configured keep_pause_seconds duration, preserving the natural rhythm of the speech.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "source": {
   "type": "object",
   "properties": {
    "url": {
     "type": "string",
     "maxLength": 2048,
     "description": "Public http(s) URL of the file."
    },
    "filename": {
     "type": "string",
     "maxLength": 260
    },
    "content_base64": {
     "type": "string",
     "maxLength": 12000000,
     "description": "The file inline, base64. Larger files by url."
    }
   },
   "description": "The recording. Either url or content_base64.",
   "additionalProperties": false
  },
  "language": {
   "type": "string",
   "maxLength": 12,
   "description": "Spoken language (BCP-47). Omit to detect."
  },
  "cut_fillers": {
   "type": "boolean",
   "default": true
  },
  "extra_fillers": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 30
   },
   "maxItems": 30,
   "description": "Additional single words to cut, e.g. \"halt\" or \"like\". Use with care."
  },
  "output_format": {
   "enum": [
    "opus",
    "mp3",
    "wav",
    "flac"
   ],
   "type": "string",
   "default": "mp3"
  },
  "duration_minutes": {
   "type": "integer",
   "maximum": 60,
   "minimum": 1,
   "description": "Length in started minutes — this is what you are billed for."
  },
  "max_pause_seconds": {
   "type": "number",
   "default": 1,
   "maximum": 10,
   "minimum": 0.3,
   "description": "Pauses longer than this are shortened."
  },
  "keep_pause_seconds": {
   "type": "number",
   "default": 0.4,
   "maximum": 2,
   "minimum": 0.1,
   "description": "Length a shortened pause keeps."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-filler-cut-audio-editor-fc661971/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from medien.halowerk.com](https://www.zero.xyz/host/medien.halowerk.com/llms.txt)