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

# Set the default browser profile

> Mark a profile as your default for its browser.

Marks a profile as your [default](/computer-use-agents/browser/profiles#default-profiles) for its `browser_name`. Sessions created with `use_default_browser_profile: true` on the [Browser environment](/computer-use-agents/browser/configuration) load this profile.

You have at most one default per browser, so setting a new default replaces the previous one for the same `browser_name` — no need to unset it first.

**Returns** the updated [profile object](/computer-use-agents/browser-profiles/retrieve) with `is_default: true`.

***

## Path parameters

<ParamField path="profile_id" type="string" required>
  The profile's `id` (UUID).
</ParamField>

***

## Examples

<CodeGroup>
  ```bash cURL theme={null}
  curl -X PUT "https://agp.eu.hcompany.ai/api/v2/browser-profiles/a1b2c3d4-5678-90ab-cdef-1234567890ab/default" \
    -H "Authorization: Bearer $HAI_API_KEY"
  ```

  ```python Python theme={null}
  from hai_agents import Client

  client = Client()

  profile = client.browser_profiles.set_default_browser_profile(
      profile_id="a1b2c3d4-5678-90ab-cdef-1234567890ab",
  )
  print(profile.is_default)
  ```

  ```typescript TypeScript theme={null}
  import { HaiAgentsClient } from "hai-agents";

  const client = new HaiAgentsClient();

  const profile = await client.browserProfiles.setDefaultBrowserProfile({
    profileId: "a1b2c3d4-5678-90ab-cdef-1234567890ab",
  });
  console.log(profile.isDefault);
  ```
</CodeGroup>

```json Response theme={null}
{
  "id": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
  "name": "acme-prod-login",
  "description": null,
  "browser_name": "chromium",
  "browser_version": "131",
  "s3_path": "browser-profiles/finished/org_123/a1b2c3d4-5678-90ab-cdef-1234567890ab/profile.zip",
  "file_size_bytes": 102400,
  "checksum": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
  "usage_count": 3,
  "last_used_at": "2026-06-16T13:05:00Z",
  "labels": {"team": "qa"},
  "is_default": true,
  "created_at": "2026-06-16T14:30:00Z",
  "updated_at": "2026-07-08T09:00:00Z"
}
```

***

## Errors

| Status | Cause                                       |
| ------ | ------------------------------------------- |
| `404`  | Profile not found or you don't have access. |