> ## 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.

# KeyAssignment - Python SDK

> KeyAssignment 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                                                          |
| -------------- | ---------------- | -------------------- | ----------------------------------------------------- | ---------------------------------------------------------------- |
| `assigned_by`  | *Nullable\[str]* | :heavy\_check\_mark: | User ID of who made the assignment                    | user\_abc123                                                     |
| `created_at`   | *str*            | :heavy\_check\_mark: | ISO 8601 timestamp of when the assignment was created | 2025-08-24T10:30:00Z                                             |
| `guardrail_id` | *str*            | :heavy\_check\_mark: | ID of the guardrail                                   | 550e8400-e29b-41d4-a716-446655440001                             |
| `id`           | *str*            | :heavy\_check\_mark: | Unique identifier for the assignment                  | 550e8400-e29b-41d4-a716-446655440000                             |
| `key_hash`     | *str*            | :heavy\_check\_mark: | Hash of the assigned API key                          | c56454edb818d6b14bc0d61c46025f1450b0f4012d12304ab40aacb519fcbc93 |
| `key_label`    | *str*            | :heavy\_check\_mark: | Label of the API key                                  | prod-key                                                         |
| `key_name`     | *str*            | :heavy\_check\_mark: | Name of the API key                                   | Production Key                                                   |