MCP Trigger Feature Request - Parameter Pass-Through

The MCP Trigger needs a parameter pass-through.

For example, I always want to send an auth token rather than use n8n credentials. Currently the only way to do this within n8n, is to give AI the token and ask it to pass it through; however, there are security risks with this, and the AI often gets the token wrong.

I know this is doable via code, as I can inject a parameter directly via my backend to the MCP Trigger/Server, but this can currently not be done within n8n itself.