MCP server in n8n for natural language document retriev

This automation template turns an external document retrieval system into an MCP-compatible tool for AI agents. Agents can now send natural language queries and receive structured responses without writing custom code. The solution acts as a tool server within the n8n ecosystem and integrates directly with the OpenIndex Retrieval Plugin API.

## Who it´s for
- AI agent developers integrating external knowledge sources.
- Automation engineers using n8n to connect with retrieval systems.
- Teams building MCP-compatible tools for LLMs.
- AI solution architects requiring flexible request routing to external data.

## What the automation does
- Accepts HTTP requests from AI agents via an MCP-compatible webhook.
- Forwards natural language queries to https://retriever.openindex.ai/sub/query using POST.
- Returns the retrieval system’s response directly to the AI agent without additional processing.
- Ensures compatibility between AI agents and external knowledge bases via the MCP standard.
- Operates as a stateless tool server, scalable within n8n.

## What´s included
- Ready-to-use n8n workflow.
- Logic for handling MCP triggers and HTTP webhooks.
- Integration with OpenIndex Retrieval Plugin API and AI Agent (via MCP).
- Basic text instructions for setup and adaptation.

## Requirements for setup
- n8n account with access to HTTP API and ability to deploy workflows.
- Access to OpenIndex Retrieval Plugin API (including required keys or authentication if applicable).
- AI agent that supports MCP tools and can invoke external APIs.

## Benefits and outcomes
- Simplifies integration of AI agents with external document repositories.
- Eliminates need for manual middleware coding to translate queries.
- Increases architectural flexibility through standardized MCP interface.
- Accelerates development of document-aware AI assistants.
- Lowers entry barrier for teams deploying RAG-based solutions.

## Important: template only
Important: you are purchasing a ready-made automation workflow template only. Rollout into your infrastructure, connecting specific accounts and services, 1:1 setup help, custom adjustments for non-standard stacks and any consulting support are provided as a separate paid service at an individual rate. To discuss custom work or 1:1 help, contact via Telegram: @gleb923.