langflow-mcp-server

A Model Context Protocol (MCP) server that provides AI assistants with comprehensive access to Langflow workflow automation platform.

Overview

langflow-mcp-server serves as a bridge between Langflow's workflow automation platform and AI models, enabling them to understand and work with Langflow flows effectively.

API Compatibility: This server is built on the Langflow API documentation and supports Langflow API version 1.7.2.

v3.0.0 - Consolidated Tools Mode

Version 3.0.0 introduces Consolidated Tools Mode - a new architecture that groups 93 individual tools into 15 action-based tools. This significantly reduces token usage and improves AI assistant context management.

| Mode | Tools | Best For | |------|-------|----------| | Standard | 93 tools | Full granular control | | Consolidated | 15 tools | Reduced token usage, better context |

To enable consolidated mode:

LANGFLOW_CONSOLIDATED_TOOLS=true

Consolidated tools:

• flow - All flow operations (list, get, create, update, delete, download, upload, etc.)
• flow_execution - Run flows (run, run_advanced, run_session, webhook, process, predict)
• build - Build operations (start, status, cancel, vertices)
• folder - Folder management (list, get, create, update, delete, download, upload)
• project - Project management (list, get, create, update, delete, download, upload)
• variable - Variable operations (list, create, update, delete)
• knowledge_base - Knowledge base management (list, get, delete, bulk_delete, upload)
• file - File operations (list, upload, download, delete, get_image)
• monitor - Monitoring (builds, messages, sessions, transactions)
• user - User management (list, get, get_current, update, reset_password)
• auth - Authentication (login, auto_login, logout, refresh, api keys)
• store - Component store (list, get, tags, likes)
• registration - User registration (get, register)
• validation - Code/prompt validation (code, prompt)
• system - System info (health, version, logs, pictures, voices)

It provides structured access to:

• Flow Management - Create, read, update, delete, and execute Langflow flows
• Flow Execution - Run flows with inputs and trigger webhooks
• Build Operations - Compile, validate, and monitor flow builds
• Import/Export - Upload and download flows and projects
• Organization - Manage folders and projects
• Configuration - Manage global variables
• Knowledge Bases - Manage RAG document collections
• Component Discovery - List all available Langflow components

Quick Start

Prerequisites

• Node.js installed on your system
• A running Langflow instance
• Langflow API key

Installation

# Install from npm
npm install -g langflow-mcp-server

# OR clone the repository
git clone https://github.com/nobrainer-tech/langflow-mcp.git
cd langflow-mcp

# Install dependencies
npm install

# Build the project
npm run build

# Configure environment
cp .env.example .env
# Edit .env with your Langflow instance URL and API key

Configuration

Edit .env file:

LANGFLOW_BASE_URL=http://localhost:7860
LANGFLOW_API_KEY=your-api-key-he

... [View full README on GitHub](https://github.com/nobrainer-tech/langflow-mcp#readme)