Nexari Speech-to-Text with Speaker Diarization (2 min)

x402

Nexari Speech-to-Text with Speaker Diarization (2 min) is a paid API for AI agents from x402.nexari.cloud, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-02).

Transcribes audio up to 2 minutes with speaker diarization using pyannote and Whisper, processed in Germany, German-optimised.

Price / call$0.04

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StatusUnknown

How this service works

Transkription mit Sprechertrennung bis 2 Min Audio (pyannote + Whisper), verarbeitet in Deutschland. Speech-to-text with speaker diarization for audio up to 2 min, German-optimised, processed in Germany. Voraussetzung/required: accept_terms_hash, business_name (B2B) – /legal/terms.json

Output

Returns a transcript broken down by speaker segments, with speaker labels (e.g. SPEAKER_00, SPEAKER_01), timestamps, and the transcribed text for each segment. Processed entirely within Germany for GDPR compliance.

Example use cases

Diarize a short customer call

“I have a 90-second customer support call recording at https://storage.example.com/call_001.mp3 with 2 speakers — can you transcribe it and show me who said what, in German?”

Transcribe a bilingual voice memo

“Please transcribe this voice memo at https://files.example.com/memo.m4a and split it by speaker — I'm not sure how many speakers there are so use auto-detection, and try to auto-detect the language too.”

Meeting snippet attribution for notes

“I've got a 1-minute clip from a team meeting encoded as base64, filename snippet.wav, with 3 speakers — can you transcribe it with speaker labels so I can attribute who said what in my meeting notes?”

Technical details

Endpoint

POSThttps://x402.nexari.cloud/transcribe/2min/speakers?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need both transcription and speaker diarization for short audio clips (under 2 minutes), particularly for German-language content or when GDPR/data residency in Germany is required. Prefer this over the plain transcription endpoint when identifying who said what matters. Use the 10-minute sibling endpoint for longer audio.

Side effects

Audio exceeds 2-minute limit — request rejected
Unsupported audio format or corrupted file
audio_url not publicly accessible — fetch failure
num_speakers out of 1-10 range — validation error
accept_terms_hash missing or invalid — terms not accepted error
Base64 audio malformed — decoding error
Network timeout fetching remote audio URL

Input

Schema · Request body

Field	Type	Description
filename	string	Dateiname mit Endung, z. B. memo.m4a
language	string	de (Standard), en, auto ...
audio_url	string	HTTPS-URL der Audiodatei / public URL of the audio file
audio_base64	string	Audio als Base64 / audio as base64
num_speakers	integer	Nur /speakers: bekannte Sprecherzahl (1-10), verbessert die Trennung
business_name	string	Unternehmen, für das gehandelt wird (nur B2B)
privacy_contact	string	E-Mail für Datenschutz-Meldungen (Art. 33 DSGVO)
accept_terms_hash	string	SHA-256 der AGB aus /legal/terms.json

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