Nextflow Developer Tools MCP

A Model Context Protocol (MCP) server designed for Nextflow development and testing, built with FastMCP.

Warning

This MCP is designed for developing Nextflow itself, not for writing Nextflow pipelines.

Overview

This MCP provides a suite of tools for Nextflow development, including:

Building Nextflow from source
Running tests (integration tests, specific tests, plugin tests)
Running the development version of Nextflow
Managing the Nextflow development directory
Accessing Nextflow documentation

Installation

Prerequisites

Claude Desktop App
Python 3.8+ with pip
Git repository of Nextflow (cloned locally)

Installing with FastMCP to use in Claude Desktop

Install the FastMCP CLI tool:

pip install fastmcp

Clone this repository:

git clone https://github.com/yourusername/nextflow-dev-mcp.git
cd nextflow-dev-mcp

Install the MCP in Claude Desktop:

fastmcp install mcp-nextflow.py

This will make the MCP available in the Claude Desktop app.

Installing with FastMCP to use in Cursor

Fetch the virtual environment path which includes the FastMCP CLI tool. If you are using uv this will be in the .venv directory.
Get the directory of your Nextflow cloned repository.
Add the following json to the cursor MCP servers:

{
    "mcpServers": {
        "server-name": {
            "command": "/path/to/your/.venv/bin/python",
            "args": [
                "/path/to/your/mcp-nextflow/mcp-nextflow.py"
            ],
            "env": {
                "NEXTFLOW_DIR": "/path/to/your/nextflow"
            }
        }
    }
}

Then, you should be able to use the MCP in Cursor. In Agentic mode, ask the agent to "test the nf-amazon plugin" and it should run make test module=plugins:nf-amazon.

Setting Environment Variables

You can specify the Nextflow directory during installation:

NEXTFLOW_DIR=/path/to/your/nextflow fastmcp install mcp-nextflow.py

Using with Claude

Once installed, you can access the MCP in the Claude Desktop app:

Open Claude Desktop
Click on the Tools menu button in the Claude interface
Select Nextflow Developer Tools from the list of installed MCPs

Using with Cursor

Cursor is an AI-powered code editor that works with Claude. To use the MCP with Cursor:

Make sure you've installed the MCP as described above
Open your Nextflow project in Cursor
In a chat with Claude in Cursor, you can reference the MCP:
Using the Nextflow Developer Tools, run the integration tests for the nf-amazon plugin

This server cannot be installed

security - not tested

license - not found

quality - not tested

How are these scores calculated?

local-only server

The server can only run on the client's local machine because it depends on local resources.

A Model Context Protocol server designed to facilitate Nextflow development and testing, providing tools for building from source, running tests, and managing the Nextflow development environment.

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