langflow-build - SKILL.md Agent Skill

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.