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CLI Commands

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langgraph new

langgraph new [PATH] --template TEMPLATE_NAME

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Arguments

• PATH (optional): Directory path where the project will be created. Defaults to current directory.

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Options

• --template TEXT: Template name to use for project scaffolding

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Examples

# Create a new project in current directory
langgraph new --template react-agent

# Create a new project in specified directory
langgraph new my-agent --template react-agent

# Create in nested path
langgraph new agents/my-agent --template react-agent

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langgraph dev

langgraph dev [OPTIONS]

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Options

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Server Configuration

• --host TEXT
  Network interface to bind the server to
  Default: 127.0.0.1
  Security Note: Only use 0.0.0.0 in trusted networks
• --port INTEGER
  Port number to bind the server to
  Default: 2024
• --config PATH
  Path to configuration file declaring dependencies, graphs, and environment variables
  Default: langgraph.json

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Development Features

• --no-reload
  Disable automatic reloading when code changes are detected
  Default: Reload enabled
• --no-browser
  Skip automatically opening the browser when the server starts
• --studio-url TEXT
  URL of the LangGraph Studio instance to connect to
  Default: https://smith.langchain.com

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Performance

• --n-jobs-per-worker INTEGER
  Maximum number of concurrent jobs each worker process can handle
  Default: 10
• --allow-blocking
  Don’t raise errors for synchronous I/O blocking operations in your code
  Default: Blocking operations raise errors

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Debugging

• --debug-port INTEGER
  Enable remote debugging by listening on specified port
  Requires: debugpy to be installed
• --wait-for-client
  Wait for a debugger client to connect before starting the server
  Default: False

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Networking

• --tunnel
  Expose the local server via a public tunnel (Cloudflare) for remote frontend access
  Default: False
  Use Case: Avoid localhost connection issues with browsers or networks

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Logging

• --server-log-level TEXT
  Set the log level for the API server
  Default: WARNING
  Options: DEBUG, INFO, WARNING, ERROR, CRITICAL

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Examples

# Start development server with defaults
langgraph dev

# Custom port and host
langgraph dev --port 8000 --host 0.0.0.0

# Disable auto-reload
langgraph dev --no-reload

# Enable debugging on port 5678
langgraph dev --debug-port 5678

# Debug with wait for client
langgraph dev --debug-port 5678 --wait-for-client

# Custom config file
langgraph dev --config ./configs/dev.json

# Expose via tunnel for remote access
langgraph dev --tunnel

# Detailed logging
langgraph dev --server-log-level DEBUG

# Increase concurrent jobs per worker
langgraph dev --n-jobs-per-worker 20

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Terminal Output

Ready!
- API: http://localhost:2024
- Docs: http://localhost:2024/docs
- LangGraph Studio: https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:2024

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langgraph up

langgraph up [OPTIONS]

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Options

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Basic Configuration

• -c, --config FILE
  Path to configuration file
  Default: langgraph.json
• -p, --port INTEGER
  Port to expose
  Default: 8123

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Docker Options

• --pull / --no-pull
  Pull latest images or use locally-built images
  Default: --pull
• --recreate / --no-recreate
  Recreate containers even if configuration and image haven’t changed
  Default: --no-recreate
• -d, --docker-compose FILE
  Path to docker-compose.yml file with additional services to launch

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Image Options

• --image TEXT
  Docker image to use for the langgraph-api service
  Use Case: Test against an image already built using langgraph build
  Skips building and uses this image directly
• --base-image TEXT
  Base image to use for the LangGraph API server
  Default: langchain/langgraph-api or langchain/langgraphjs-api
• --api-version TEXT
  API server version to use for the base image
  Default: Latest version

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Development Features

• --watch
  Restart on file changes
  Note: Rebuilds and restarts containers when code changes
• --wait
  Wait for services to start before returning
  Implies: --detach
• --verbose
  Show detailed output from the server logs

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Debugger Options

• --debugger-port INTEGER
  Pull the debugger image locally and serve the UI on specified port
• --debugger-base-url TEXT
  URL used by the debugger to access LangGraph API
  Default: http://127.0.0.1:[PORT]

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Database Options

• --postgres-uri TEXT
  Postgres URI to use for the database
  Default: Launches a local database

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Examples

# Start with defaults
langgraph up

# Custom port
langgraph up --port 8000

# Use locally-built image (no pull)
langgraph up --no-pull

# Watch for file changes and auto-restart
langgraph up --watch

# Wait for services to be ready
langgraph up --wait

# Verbose logging
langgraph up --verbose

# Force recreate all containers
langgraph up --recreate

# Use custom base image version
langgraph up --base-image langchain/langgraph-api:0.2.47

# Use pre-built image
langgraph up --image my-agent:latest --no-pull

# Custom config with additional services
langgraph up -c langgraph.json -d docker-compose.services.yml

# With debugger UI
langgraph up --debugger-port 8001

# Custom Postgres database
langgraph up --postgres-uri postgresql://user:pass@localhost:5432/mydb

# Pin to specific API version
langgraph up --api-version 0.2.47

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Terminal Output

Starting LangGraph API server...
For local dev, requires env var LANGSMITH_API_KEY with access to LangSmith Deployment.
For production use, requires a license key in env var LANGGRAPH_CLOUD_LICENSE_KEY.

Ready!
- API: http://localhost:8123
- Docs: http://localhost:8123/docs
- LangGraph Studio: https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:8123

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langgraph build

langgraph build -t IMAGE_TAG [OPTIONS] [DOCKER_BUILD_ARGS]

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Options

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Required

• -t, --tag TEXT
  Tag for the docker image
  Required

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Configuration

• -c, --config FILE
  Path to configuration file
  Default: langgraph.json

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Image Options

• --base-image TEXT
  Base image to use for the LangGraph API server
  Default: langchain/langgraph-api or langchain/langgraphjs-api
• --api-version TEXT
  API server version to use for the base image
  Default: Latest version
• --pull / --no-pull
  Pull latest images or use locally-built images
  Default: --pull

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Build Commands (JavaScript/TypeScript)

• --install-command TEXT
  Custom install command to run from the build context root
  Auto-detects: Based on package manager files (package-lock.json, yarn.lock, etc.)
• --build-command TEXT
  Custom build command to run from the langgraph.json directory
  Default: Uses default build process

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Docker Build Arguments

• --platform: Target platforms (e.g., linux/amd64,linux/arm64)
• --build-arg: Build-time variables
• --cache-from: Images to consider as cache sources
• --push: Push the image after building
• And any other valid docker build arguments

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Examples

# Basic build
langgraph build -t my-agent:latest

# Build for multiple platforms
langgraph build -t my-agent:latest --platform linux/amd64,linux/arm64

# Use specific base image version
langgraph build -t my-agent:v1.0 --base-image langchain/langgraph-api:0.2.47

# Use local base image (no pull)
langgraph build -t my-agent:dev --no-pull

# Build with custom config
langgraph build -t my-agent:latest -c configs/production.json

# Build and push to registry
langgraph build -t myregistry.io/my-agent:latest --push

# Build with build arguments
langgraph build -t my-agent:latest --build-arg BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')

# Custom install command for JS projects
langgraph build -t my-agent:latest --install-command "pnpm install --frozen-lockfile"

# Custom build command
langgraph build -t my-agent:latest --build-command "npm run build:prod"

# Use cache from previous build
langgraph build -t my-agent:latest --cache-from my-agent:previous

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langgraph dockerfile

langgraph dockerfile SAVE_PATH [OPTIONS]

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Arguments

• SAVE_PATH: Path where the Dockerfile will be saved (required)

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Options

• -c, --config FILE
  Path to configuration file
  Default: langgraph.json
• --base-image TEXT
  Base image to use for the LangGraph API server
  Default: langchain/langgraph-api or langchain/langgraphjs-api
• --api-version TEXT
  API server version to use for the base image
  Default: Latest version
• --add-docker-compose
  Add additional files for running with docker-compose
  Creates: docker-compose.yml, .env, .dockerignore

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Examples

# Generate Dockerfile only
langgraph dockerfile ./Dockerfile

# Generate with docker-compose setup
langgraph dockerfile ./Dockerfile --add-docker-compose

# Use specific base image
langgraph dockerfile ./Dockerfile --base-image langchain/langgraph-api:0.2.47

# Custom config file
langgraph dockerfile ./deploy/Dockerfile -c configs/prod.json

# Generate in specific directory with compose files
langgraph dockerfile ./deploy/Dockerfile --add-docker-compose

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Generated Files

./
├── Dockerfile              # Generated Dockerfile
├── docker-compose.yml      # Docker Compose configuration
├── .dockerignore          # Files to exclude from build context
└── .env                   # Environment variables template (if doesn't exist)

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Terminal Output

🔍 Validating configuration at path: langgraph.json
✅ Configuration validated!
📝 Generating Dockerfile at ./Dockerfile
✅ Created: Dockerfile
✅ Created: .dockerignore
✅ Created: docker-compose.yml
✅ Created: .env
🎉 Files generated successfully at path ./!

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Global Options

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Version

langgraph --version

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Help

langgraph --help
langgraph [COMMAND] --help

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Common Patterns

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Local Development Workflow

# Start development
langgraph dev

# Test in Docker
langgraph up --watch

# Build for production
langgraph build -t my-agent:v1.0

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Multi-Platform Builds

# Build for multiple architectures
langgraph build -t my-agent:latest \
  --platform linux/amd64,linux/arm64 \
  --push

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Using Custom Base Images

# Development with specific version
langgraph dev

# Production build with pinned version
langgraph build -t my-agent:prod \
  --base-image langchain/langgraph-api:0.2.47

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Docker Compose Development

# Generate compose files
langgraph dockerfile ./Dockerfile --add-docker-compose

# Run with compose
docker-compose up

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Exit Codes

• 0: Success
• 1: General error (invalid arguments, command failed, etc.)
• 2: Command line usage error

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Environment Requirements

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For langgraph dev

• Python 3.11 or higher
• langgraph-cli[inmem] installed

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For langgraph up and langgraph build

• Docker installed and running
• Docker Compose (plugin or standalone)

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For All Commands

• Valid langgraph.json configuration file
• Required API keys in environment or .env file