langflow-build

name	langflow-build
description	Visual AI workflow builder powered by Langflow
version	1.0.0
tags	["ai","workflow","langchain","low-code"]

Langflow – Visual AI Workflow Builder

Langflow provides a drag-and-drop interface for building LangChain-based AI agents, RAG flows, and multi-step LLM pipelines.

• GitHub: github.com/langflow-ai/langflow (140 000+ ⭐)
• License: MIT
• Security: Backed by Datastax. Active CVE response. No malware.

Environment Variables

Variable	Description
{{LANGFLOW_URL}}	Base URL of the Langflow instance
{{LANGFLOW_API_KEY}}	API key for authentication

Usage Examples

Run a flow

curl -s -X POST "{{LANGFLOW_URL}}/api/v1/run/<flow_id>" \
  -H "x-api-key: {{LANGFLOW_API_KEY}}" \
  -H "Content-Type: application/json" \
  -d '{"input_value": "What is RAG?", "output_type": "chat"}'

List available flows

curl -s "{{LANGFLOW_URL}}/api/v1/flows" \
  -H "x-api-key: {{LANGFLOW_API_KEY}}"

AI Agent Tips

• Build complex LLM chains visually, then expose them as API endpoints.
• Supports LangChain components: agents, tools, memory, retrievers.
• Export flows as JSON for version control.
• Integrates with Ollama, OpenAI, and other model providers.