Missing Extra Configuration Fields in Call n8n Workflow Tool Interface

Below is some guidance on what might be happening with your Custom n8n Workflow Tool node:

Check Your Source Option

• When using the node, you have two source options: Database and Parameter.
  • The Database option lets you select a sub-workflow by entering its ID. In this mode, the node interface may only show the workflow selection process without extra fields.
  • The additional fields—for editing responses, extra fields, or specifying an input schema—appear when you choose the Parameter option, where you paste in a complete workflow JSON.

Verify n8n Version and Setup

• Ensure that your n8n instance is running a version that supports the full interface for the Custom n8n Workflow Tool node. In some cases, an older version might not show all available fields.
• Verify that you’re accessing the node in the correct context. The extra fields may be tied to agent support (for example, when using a Tools Agent or OpenAI Functions Agent) which expects a structured input schema.

Next Steps

• Switch the Source Mode: Try selecting the Parameter option instead of Database. Paste in a simple workflow JSON to see if the additional settings appear.
• Double-Check Examples: Compare your node settings with the example workflows provided in the n8n templates. They should include the extended settings if everything is configured correctly.
• Browser and Cache: Occasionally, browser cache or extension conflicts might hide parts of the interface. Consider clearing your cache or testing in another browser or in incognito mode.

Following these steps should help surface the missing fields. If you still experience issues, it might be helpful to check the browser’s console for any errors or contact support with details of your n8n version and setup configuration.

Hope this helps you get things working!