> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zelto.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Cartesia

> Connect a Cartesia account so Zelto can reach your voice agents.

## Connect

1. Open **Settings → Integrations → Cartesia** and click **Connect Cartesia**.
2. Paste your Cartesia API key. Create one in the
   [Cartesia dashboard](https://play.cartesia.ai) under **API Keys**. Zelto
   validates the key against your account before saving it, then stores it
   encrypted.
3. Give the connection a label (e.g. `Production`) so you can tell multiple
   accounts apart.

You can connect multiple Cartesia accounts to one organization.

## What Zelto reads

Zelto reads your [Cartesia agents](https://docs.cartesia.ai/api-reference/agents)
to confirm the key works and to list the agents on your account. The key is
account-scoped, so a single key covers every agent.

<Note>
  Agent import and call-log ingestion for Cartesia are on the roadmap. Today the
  integration connects and validates your account; to bring call data in now,
  forward calls through [Custom & other providers](/docs/integrations/api-call-upload).
</Note>

## Connection status & disconnecting

The Cartesia card shows each connected account. The **Disconnect** action
removes the stored API key for that account.

## Related

* [Connect a voice provider](/docs/guides/connect-a-voice-provider) — pick a path and verify ingestion.
* [Agents](/docs/agents) — how Zelto models each agent.
* [Findings](/docs/findings) — what analysis surfaces from each call.
* [Retell](/docs/integrations/retell) · [Vapi](/docs/integrations/vapi) · [Telnyx](/docs/integrations/telnyx) — the other native voice integrations.