> For the complete documentation index, see [llms.txt](https://replai-1.gitbook.io/replai-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://replai-1.gitbook.io/replai-docs/ai-and-models/bring-your-own-key.md).

# Bring your own key

## Bring your own key

Bring your own key (BYOK) connects your own provider account to an assistant.

Your provider bills usage directly to you.

### What does BYOK include?

Replai verifies the key before saving it.

The key is encrypted at rest.

The saved value is never shown again.

### Does Replai add markup?

No.

Replai does not add markup to provider usage billed on your key.

### How do you set it up?

{% stepper %}
{% step %}

### Choose Claude

Claude is the selectable provider today.
{% endstep %}

{% step %}

### Paste the key

For Anthropic, keys start with `sk-ant-`.
{% endstep %}

{% step %}

### Save after verification

Replai verifies the key before it is saved.
{% endstep %}
{% endstepper %}

### What happens if you leave the key field blank later?

Replai keeps the existing saved key.

Paste a new key only when you want to rotate it.

{% hint style="warning" %}
Never place provider keys in widget code or other browser code.
{% endhint %}

### Related links

* [AI provider options](/replai-docs/ai-and-models/ai-provider-options.md)
* [Providers](/replai-docs/ai-and-models/providers.md)
* [Encryption of credentials](/replai-docs/trust-and-privacy/encryption-of-credentials.md)
* [No training on your data](/replai-docs/ai-and-models/no-training-on-your-data.md)


---

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