By default the extension is targeting the production API. If you are running the [Core](https://github.com/bitwarden/core) API locally, you'll need to switch the extension to target your local API. Open `src/services/apiService.js` and set `this.baseUrl` to your local API instance (ex. `http://localhost:4000`).
Then run the following commands:
-`gulp build`
You can now load the extension into your browser through the browser's extension tools page:
- Chrome/Opera:
1. Type `chrome://extensions` in your address bar to bring up the extensions page.
2. Enable developer mode (checkbox)
3. Click the "Load unpacked extension" button, navigate to the `src` folder of your local extension instance, and click "Ok".
- Firefox
1. Type `about:debugging` in your address bar to bring up the add-ons page.
2. Click the `Load Temporary Add-on` button, navigate to the `src/manifest.json` file, and "Open".
