Hi everyone,
I’m trying to send custom secure information (for example, a userId, transactionId, or databaseName) from my external application (build on OpenAI’s ResponsesAPI) into the MCP server trigger node in n8n, but I’m not seeing how to retrieve arbitrary HTTP headers in the MCP workflow. I’ve read that the MCP node is designed to abstract away HTTP details so the AI “just does its thing,” but in my use case I need to pass these identifiers along securely.
Is there a supported way in n8n to expose incoming HTTP headers (or URL/query parameters) to the MCP node?
Any pointers, examples, or best practices would be hugely appreciated!