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Connect WordPress

Connect your WordPress site to Impossible by entering your API key in the settings. The plugin connects to the Impossible API automatically.

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Prerequisites

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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.

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Settings reference

FieldDescription
API KeyFrom the Impossible web app (Dashboard → API Keys). Stored masked; paste the full key when saving.
Local / developmentToggle to show Site URL Override. Use when running locally with ngrok so the orchestrator can reach your site.
Site URL OverrideYour ngrok or tunnel URL. Only visible when “Local / development” is checked.
Test ConnectionValidates the API key and registers this site. Required before using the builder.

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Environment-specific setup

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
Keep your API key private. Never commit it to version control or expose it in public code.