---
title: Subprocessors
navTitle: Subprocessors
description: The third-party subprocessors Handhold relies on to deliver the service, what each one is used for, and where they process data.
slug: subprocessors
order: 4
lastModified: 2026-06-11
---

We use the following subprocessors:

| Subprocessor                                                                     | Purpose                                  | Data processed                                                  |
| -------------------------------------------------------------------------------- | ---------------------------------------- | --------------------------------------------------------------- |
| [OpenAI](https://openai.com)                                                     | Large language models                    | Demo conversations, page content, and voice transcripts         |
| [Browserbase](https://browserbase.com)                                           | Browser automation                       | Content of web pages rendered during demo creation and sessions |
| [Firecrawl](https://firecrawl.dev)                                               | Website crawling                         | Public website content only                                     |
| [LiveKit](https://livekit.io)                                                    | Realtime voice session infrastructure    | Visitor voice audio                                             |
| [Deepgram](https://deepgram.com)                                                 | Speech-to-text                           | Visitor voice audio and transcripts                             |
| [Cartesia](https://cartesia.ai)                                                  | Voice generation                         | Agent speech text                                               |
| [ElevenLabs](https://elevenlabs.io)                                              | Voice generation and speech-to-text      | Agent speech text, visitor voice audio and transcripts          |
| [Microsoft Azure](https://learn.microsoft.com/azure/ai-services/speech-service/) | Voice generation                         | Agent speech text                                               |
| [Google Cloud](https://cloud.google.com)                                         | Cloud storage                            | Stored demo assets                                              |
| [Render](https://render.com)                                                     | Application hosting                      | All service data (application and database hosting)             |
| [Postmark](https://postmarkapp.com)                                              | Email delivery                           | Names and email addresses of account holders                    |
| [Plausible](https://plausible.io)                                                | Privacy-friendly analytics               | Anonymised page views, no cookies or persistent identifiers     |
| [Sentry](https://sentry.io)                                                      | Error monitoring and performance tracing | Error reports and request metadata, IP addresses not stored     |
| [Stripe](https://stripe.com)                                                     | Payment processing                       | Billing contact and payment details                             |