Connect WordPress
Connect your WordPress site to Impossible by entering your API key in the settings. The plugin connects to the Impossible API automatically.Prerequisites
- Impossible plugin installed and activated
- An API key from the Impossible web app
Configure settings
1
Open settings
In WordPress admin, go to Impossible → Settings.
2
Enter API key
Paste your API key in the API Key field. The key is stored securely and displayed masked after saving.
3
Local development (optional)
If you’re using LocalWP or a local site behind ngrok, check Are you using this on a local / development environment? and paste your tunnel URL (e.g. from ngrok) so the orchestrator can reach your site.
4
Test connection
Click Test Connection. Wait for “Connection successful.” This validates your key and registers your site.
5
Save
Click Save if you made changes. The builder will not work until Test Connection succeeds.
Success: When Test Connection succeeds, the plugin stores a site secret used for secure requests. You can now open the builder.
Settings reference
Environment-specific setup
- Production
- Local development
For production:
- Enter only your API key. The plugin connects to the Impossible API automatically.
- Do not set
WPA_DEV_MODE— use Test Connection for proper authentication - Ensure your WordPress site has a public HTTPS URL