nobrainer-tech/langflow-mcp
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MCP server for Langflow — gives AI assistants full access to Langflow workflow automation (93 tools, consolidated mode)
개요
A Model Context Protocol (MCP) server that provides AI assistants with comprehensive access to Langflow workflow automation platform. 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. : This server is built on the Langflow API documentation and targets Langflow API version in the 1.12.x family. The latest stable upstream release check on found v1.12.6, published . The v1.12.4 to v1.12.6 source comparison found changed history limits, credential masking, and execution/attachment policies, without a required client route migration. The client preserves upstream authorization and validation errors. Workflow runs expose the optional expose_graph_state control added in 1.12.
README
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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 targets Langflow API version 1.13.0 for its existing tools, the latest stable release checked on 2026-10-25 (released 2026-10-22, source commit 63082cf9a9c0e5bbeda12bba0aa9e0b05ffffe6a). Review of the 1.12.6 to 1.13.0 changes identified required policy, team-membership and user-management updates. This is a bounded source-contract review, supported by local regression and installed-package tests; a live end-to-end run against Langflow 1.13.0 has not been performed. New upstream connection, trigger, migration-administration and deployment-snapshot APIs are not exposed as tools.
Policy replacement requires the current revision and all six policy lists, including approved_integration_provider_ids and blocked_integration_action_keys. Read the current bundle before replacing it; an explicit empty list clears that policy set. Manual team-membership creation accepts only source: "manual" or an omitted source. Password reset requires an interactive Langflow login and is unavailable through this client’s API-key authentication; its retained tool returns an actionable error without sending the password. The exported deleteUser method returns the deletion-started response and request_id; acceptance does not mean deletion has completed. Upstream authorization, policy, storage-unavailability and migration-pause errors remain errors.
Versioning: From 4.10.0 onward, the npm minor version mirrors the targeted Langflow minor: [email protected] targets Langflow 1..x (for example, 4.13.x targets Langflow 1.13.x). The patch component is used for fixes within the same Langflow minor.
설치
npx -y langflow-mcp-server설정
{
"mcpServers": {
"langflow": {
"command": "npx",
"args": ["-y", "langflow-mcp-server"],
"env": {
"LANGFLOW_BASE_URL": "http://localhost:7860",
"LANGFLOW_API_KEY": "your-api-key-here",
"LANGFLOW_CONSOLIDATED_TOOLS": "true",
"MCP_MODE": "stdio",
"LOG_LEVEL": "error"
}
}
}
}