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HALOWERK Email-from-Voice
x402
HALOWERK Email-from-Voice 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 a voice recording (up to 10 minutes) and generates a structured email draft — subject, salutation, body, and closing — in the chosen formality and tone, without sending it.
Price / call$0.03
Success—
StatusUnknown
How this service works
Takes a voice note or dictation of up to 10 minutes ("write to Mr Weber that the offer is late and we will send it Friday...") and returns an e-mail draft: subject, salutation, body and closing, in formal or informal register and the chosen tone, with names, dates and figures exactly as spoken. Points the speaker left open are listed separately instead of being invented. Nothing is sent; the draft is returned as text and as an .eml-ready body.
Output
Returns a structured email draft containing: subject line, salutation, full body paragraphs, and closing — all reflecting names, dates, and figures exactly as spoken. Any points the speaker left open or incomplete are listed separately rather than invented. Output is provided as plain text and as an EML-ready body, in the requested language and formality.
Example use cases
Business follow-up from field dictation
“I recorded a 2-minute voice note on my phone saying that the offer for Herr Weber is running late and we'll send it by Friday — please turn it into a formal, neutral-toned German email draft signed from me, Klaus Richter.”
Apologetic client update email
“Here's a 4-minute audio clip where I explain to our client that delivery is delayed due to supply issues and we'll update them weekly — draft a formal, apologetic email in English from this recording, sender name Sarah Lindqvist.”
Informal team announcement from voice note
“I have a 1-minute informal voice note where I tell the team about next Friday's offsite — can you convert it into an email draft with a friendly tone and informal register in English, from Jamie?”
Technical details
Endpoint
POSThttps://medien.halowerk.com/v1/email-from-voice?utm_source=zero.xyzWhen to prefer
Choose this endpoint when a user wants to convert spoken dictation or a voice memo directly into a ready-to-send email draft without manual transcription or editing. Ideal for business users who dictate correspondence on the go and need a properly structured, tone-appropriate email. Prefer this over generic transcription endpoints when the output must be formatted as an email (subject, salutation, body, closing) and when open or unresolved points should be flagged rather than filled in.
Side effects
- Audio file too long (over 10 minutes) — request rejected
- Base64 content exceeds maximum size (12 MB) — use URL instead
- Unsupported or ambiguous BCP-47 language code — detection may fall back to auto-detect
- Poor audio quality or heavy background noise — transcription may be inaccurate or incomplete
- Requested output_language not in supported enum — validation error
- duration_minutes mismatch with actual file length — billing uses declared value
- Network timeout fetching audio from provided URL — returns error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tone | string | |
| source | object | The recording. Either url or content_base64. |
| language | string | Spoken language (BCP-47). Omit to detect. |
| formality | string | |
| sender_name | string | |
| output_language | string | Language of the text. Default: spoken language. |
| duration_minutes | integer | Length in started minutes — this is what you are billed for. |
Tags
x402
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