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HALOWERK Audio Redact
x402
HALOWERK Audio Redact is a paid API for AI agents from medien.halowerk.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-31).
Transcribes an audio or video file and redacts sensitive spoken content (emails, phone numbers, IBANs, card numbers, custom terms) by replacing it with a beep tone or silence
Price / call$0.03
Success—
StatusUnknown
How this service works
Takes an audio or video file and returns a new audio file in which sensitive spoken content is covered by a 1 kHz tone or by silence. The recording is transcribed with word timestamps; then fixed, checkable patterns are searched in the words — e-mail addresses, also in spoken form, phone numbers of 7 to 15 digits, IBANs, card numbers that pass the Luhn check, and optionally any number of four or more digits — together with the names and terms you pass in terms, matched word by word regardless…
Output
A redacted audio file (in the requested format: opus, mp3, wav, or flac) returned as base64-encoded content, with all detected sensitive segments — matching the selected pattern categories and any custom terms — replaced by a 1 kHz beep tone or silence, with configurable padding around each redacted segment.
Example use cases
GDPR-compliant call center recording
“We have a 20-minute recorded support call at https://cdn.example.com/support-call.wav that contains customer phone numbers, emails, and card details — please redact all of those with a beep tone and return it as an opus file so we can archive it safely.”
Interview anonymization before publication
“I'm about to publish this 15-minute interview recording but the guest mentioned their home address and personal phone number — can you silence those out along with the names 'Maria Hoffmann' and 'TechCorp GmbH', and give me the result as a FLAC file?”
Financial meeting transcript sanitization
“This 8-minute board meeting recording has spoken IBANs and account numbers in it — redact all IBANs, card numbers, and any number with four or more digits using beep, and return it as a WAV file. The language is German.”
Technical details
Endpoint
POSThttps://medien.halowerk.com/v1/audio-redact?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to automatically scrub PII or sensitive spoken content from audio or video recordings — especially phone numbers, emails, IBANs, and credit card numbers — with configurable custom terms and output format. Prefer it over manual editing when handling call center recordings, interview archives, or compliance workflows at scale. It is particularly suited for GDPR/compliance use cases where auditable, pattern-based redaction is required rather than full transcript deletion.
Side effects
- File too long (max 30 billed minutes) — returns an error indicating duration limit exceeded
- base64 content exceeds 12 MB limit — request rejected
- Invalid BCP-47 language code — transcription may fail or fall back to auto-detection
- No sensitive content detected — audio returned unchanged
- Unsupported audio/video format — transcription or redaction fails
- Network timeout fetching URL-based source — returns fetch error
- Payment not completed via x402 — request blocked with 402 response
- terms list exceeds 200 entries — request rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mode | string | |
| terms | array | Names and terms to redact, matched word by word, case-insensitive. Multi-word terms are allowed. |
| source | object | The recording. Either url or content_base64. |
| language | string | BCP-47 code of the spoken language. Omit to detect it. |
| categories | array | Pattern categories to redact. long_number covers every number of four or more digits and is off by default. |
| padding_ms | integer | Margin added before and after each hit. |
| output_format | string | |
| duration_minutes | integer | Length in started minutes — this is what you are billed for. |
Tags
x402
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