id: langflow
name: Langflow
version: "1.0"
description: Visual framework for building multi-agent and RAG applications.
icon: https://serverkit.ai/imgs/template-icons/langflow.svg
website: https://www.langflow.org
documentation: https://docs.langflow.org
categories:
  - ai
  - llm
  - workflow
  - rag

variables:
  - name: HTTP_PORT
    description: Port for the Langflow web UI (auto-assigned)
    type: port
    default: "7860"
    hidden: true
  - name: LANGFLOW_SUPERUSER
    description: Default admin username
    type: string
    default: "admin"
  - name: LANGFLOW_SUPERUSER_PASSWORD
    description: Default admin password (auto-generated)
    type: password
    length: 24
  - name: LANGFLOW_SECRET_KEY
    description: Secret key used to encrypt stored credentials (auto-generated)
    type: random
    length: 48
    hidden: true
  - name: DB_PASSWORD
    description: PostgreSQL password (auto-generated)
    type: password
    length: 32
    hidden: true

ports:
  - port: "${HTTP_PORT}"
    protocol: http
    description: Langflow Web UI

requirements:
  memory: 2GB
  storage: 4GB

compose:
  services:
    langflow:
      image: langflowai/langflow:1.7.2
      container_name: ${APP_NAME}
      restart: unless-stopped
      ports:
        - "${HTTP_PORT}:7860"
      environment:
        LANGFLOW_DATABASE_URL: "postgresql://langflow:${DB_PASSWORD}@db:5432/langflow"
        LANGFLOW_CONFIG_DIR: /app/langflow
        LANGFLOW_SUPERUSER: "${LANGFLOW_SUPERUSER}"
        LANGFLOW_SUPERUSER_PASSWORD: "${LANGFLOW_SUPERUSER_PASSWORD}"
        LANGFLOW_SECRET_KEY: "${LANGFLOW_SECRET_KEY}"
        LANGFLOW_AUTO_LOGIN: "false"
        LANGFLOW_HOST: 0.0.0.0
        PORT: "7860"
      volumes:
        - langflow-data:/app/langflow
      depends_on:
        - db
      healthcheck:
        test: ["CMD-SHELL", "curl -f http://127.0.0.1:7860/health || exit 1"]
        interval: 30s
        timeout: 10s
        retries: 5
        start_period: 60s

    db:
      image: postgres:16-alpine
      container_name: ${APP_NAME}-db
      restart: unless-stopped
      environment:
        POSTGRES_DB: langflow
        POSTGRES_USER: langflow
        POSTGRES_PASSWORD: "${DB_PASSWORD}"
      volumes:
        - langflow-db:/var/lib/postgresql/data
      healthcheck:
        test: ["CMD-SHELL", "pg_isready -U langflow -d langflow"]
        interval: 10s
        timeout: 5s
        retries: 5

  volumes:
    langflow-data:
    langflow-db:

post_install: |
  Langflow is installed and running!

  - Web UI: http://your-server:${HTTP_PORT}
  - Username: ${LANGFLOW_SUPERUSER}
  - Password: ${LANGFLOW_SUPERUSER_PASSWORD}

  Sign in with the credentials above, then start building your first
  multi-agent or RAG flow on the visual canvas.