langchain/libs/cli/DOCS.md

langchain

Usage:

$ langchain [OPTIONS] COMMAND [ARGS]...

Options:

• --help: Show this message and exit.
• -v, --version: Print current CLI version.

Commands:

• app: Manage LangChain apps
• serve: Start the LangServe app, whether it's a...
• template: Develop installable templates.

langchain app

Manage LangChain apps

Usage:

$ langchain app [OPTIONS] COMMAND [ARGS]...

Options:

• --help: Show this message and exit.

Commands:

• add: Adds the specified template to the current...
• new: Create a new LangServe application.
• remove: Removes the specified package from the...
• serve: Starts the LangServe app.

langchain app add

Adds the specified template to the current LangServe app.

e.g.: langchain app add extraction-openai-functions langchain app add git+ssh://git@github.com/efriis/simple-pirate.git

Usage:

$ langchain app add [OPTIONS] [DEPENDENCIES]...

Arguments:

• [DEPENDENCIES]...: The dependency to add

Options:

• --api-path TEXT: API paths to add
• --project-dir PATH: The project directory
• --repo TEXT: Install templates from a specific github repo instead
• --branch TEXT: Install templates from a specific branch
• --help: Show this message and exit.

langchain app new

Create a new LangServe application.

Usage:

$ langchain app new [OPTIONS] NAME

Arguments:

• NAME: The name of the folder to create [required]

Options:

• --package TEXT: Packages to seed the project with
• --help: Show this message and exit.

langchain app remove

Removes the specified package from the current LangServe app.

Usage:

$ langchain app remove [OPTIONS] API_PATHS...

Arguments:

• API_PATHS...: The API paths to remove [required]

Options:

• --help: Show this message and exit.

langchain app serve

Starts the LangServe app.

Usage:

$ langchain app serve [OPTIONS]

Options:

• --port INTEGER: The port to run the server on
• --host TEXT: The host to run the server on
• --app TEXT: The app to run, e.g. app.server:app
• --help: Show this message and exit.

langchain serve

Start the LangServe app, whether it's a template or an app.

Usage:

$ langchain serve [OPTIONS]

Options:

• --port INTEGER: The port to run the server on
• --host TEXT: The host to run the server on
• --help: Show this message and exit.

langchain template

Develop installable templates.

Usage:

$ langchain template [OPTIONS] COMMAND [ARGS]...

Options:

• --help: Show this message and exit.

Commands:

• new: Creates a new template package.
• serve: Starts a demo app for this template.

langchain template new

Creates a new template package.

Usage:

$ langchain template new [OPTIONS] NAME

Arguments:

• NAME: The name of the folder to create [required]

Options:

• --with-poetry / --no-poetry: Don't run poetry install [default: no-poetry]
• --help: Show this message and exit.

langchain template serve

Starts a demo app for this template.

Usage:

$ langchain template serve [OPTIONS]

Options:

• --port INTEGER: The port to run the server on
• --host TEXT: The host to run the server on
• --help: Show this message and exit.