> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# UpdateBYOKKeyRequest - Python SDK

> UpdateBYOKKeyRequest method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

## Fields

| Field              | Type                     | Required             | Description                                                                                                                                                                                        | Example              |
| ------------------ | ------------------------ | -------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------- |
| `allowed_models`   | List\[*str*]             | :heavy\_minus\_sign: | Optional allowlist of model slugs this credential may be used for. `null` means no restriction.                                                                                                    | `<nil>`              |
| `allowed_user_ids` | List\[*str*]             | :heavy\_minus\_sign: | Optional allowlist of user IDs that may use this credential. `null` means no restriction.                                                                                                          | `<nil>`              |
| `disabled`         | *Optional\[bool]*        | :heavy\_minus\_sign: | Whether this credential is disabled.                                                                                                                                                               | false                |
| `is_fallback`      | *Optional\[bool]*        | :heavy\_minus\_sign: | Whether this credential is treated as a fallback — used only after non-fallback keys for the same provider have been tried.                                                                        | false                |
| `key`              | *Optional\[str]*         | :heavy\_minus\_sign: | A new raw provider API key to rotate the credential in-place. The previous key material is overwritten and the masked label is regenerated. Encrypted at rest and never returned in API responses. | sk-proj-newkey456... |
| `name`             | *OptionalNullable\[str]* | :heavy\_minus\_sign: | Optional human-readable name for the credential.                                                                                                                                                   | Updated OpenAI Key   |