OneCallFlow
Subprocessors
OneCallFlow uses technical providers for telephony, voice AI, hosting, database, storage, email and security.
Updated 25 June 2026
Main providers
| Provider | Use | Status |
|---|---|---|
| Vercel | Website and application route hosting | Active |
| Supabase | Database, storage, authentication and application logs | Active |
| LiveKit | Realtime voice infrastructure and demo/production sessions | Active |
| Twilio | Telephony/SIP routing where phone numbers are connected | Client-dependent |
| OpenRouter | LLM routing currently used by the voice agent | Must be contractually controlled before expansion |
| Deepgram | Speech-to-text | DPA/contract to confirm |
| Cartesia | Text-to-speech | Public DPA identified |
| Google Workspace/Cloud | Sheets, Drive, Calendar depending on client setup | Client-dependent |
| Resend | Contact-form email notification if API key is enabled | Optional |
Changes
B2B clients are notified of material subprocessor changes according to the applicable DPA.
For provider questions: privacy@onecallflow.com.