Register credential overwrites on startup with the n8n API

Quick Overview This workflow helps you set and maintain n8n credential overwrites by fetching credential schemas via the n8n REST API and registering overwrite values on every n8n startup using the credential overwrite endpoint. How it works Runs manually to collect your target credential type and n8n base URL for testing. Calls the n8n REST API to fetch the schema for the specified credential type so you can see which fields are available to overwrite. Triggers when n8n starts and sends a POST request to the credential overwrite endpoint to register the overwrite payload. Stores the overwrite JSON securely inside an HTTP custom auth credential and uses it as the request body to apply defaul

Help me set up the n8n workflow "Register credential overwrites on startup with the n8n API" (https://n8n.io/workflows/17052). It uses: HTTP Request. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.