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How to contribute?

πŸ‘‹ Hello there! We welcome contributions from developers of all levels to our open-source project on GitHub. If you'd like to contribute, please check our contributing guidelines and help make Langflow more accessible.

As an open-source project in a rapidly developing field, we are extremely open to contributions, whether in the form of a new feature, improved infra, or better documentation.

To contribute to this project, please follow a "fork and pull request" workflow.

Please do not try to push directly to this repo unless you are a maintainer.

Local development​

You can develop Langflow using docker compose, or locally.

We provide a .vscode/launch.json file for debugging the backend in VSCode, which is a lot faster than using docker compose.

Setting up hooks:

make init

This will install the pre-commit hooks, which will run make format on every commit.

It is advised to run make lint before pushing to the repository.

Run locally​

Langflow can run locally by cloning the repository and installing the dependencies. We recommend using a virtual environment to isolate the dependencies from your system.

Before you start, make sure you have the following installed:

  • Poetry (>=1.4)
  • Node.js

Then, in the root folder, install the dependencies and start the development server for the backend:

make backend

And the frontend:

make frontend

Docker compose​

The following snippet will run the backend and frontend in separate containers. The frontend will be available at localhost:3000 and the backend at localhost:7860.

docker compose up --build
# or
make dev build=1


The documentation is built using Docusaurus. To run the documentation locally, run the following commands:

cd docs
npm install
npm run start

The documentation will be available at localhost:3000 and all the files are located in the docs/docs folder. Once you are done with your changes, you can create a Pull Request to the main branch.

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