# `PUT /company/setting/{key}`

Protected. Requires a valid session cookie (`credentials: 'include'`).

Upsert company setting

Sets (upserts) a company setting for the selected company.
Only a fixed allow-list of keys can be set: `ui.theme`, `keys.tavily`,
`keys.openrouter`, `keys.serper`, `systemprompt-prefix`,
`systemprompt-suffix`, `default-model`, `modelslug`,
`modelslugflag`, `modelreasoning`, `modelslugimage`.


## Path parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `key` | yes | string |  |

## Body (JSON)

| Field | Required | Type | Description |
|-------|----------|------|-------------|
| `value` | yes | string |  |
| `frontend` | no | boolean |  |

```json
{
  "value": "dark",
  "frontend": true
}
```

## Response `200`

Upserted company setting

```json
{
  "setting": {
    "key": "…",
    "value": "…"
  }
}
```

## Errors

| Status | Description |
|--------|-------------|
| 400 | Invalid setting, invalid key, or no company selected — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Company not found — `{"error":"…"}` |

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