Development Contributions

We strive to make contributions easy, collaborative, and enjoyable. Mem0 is a polyglot monorepo containing the Python SDK (mem0/), the TypeScript SDK (mem0-ts/), CLIs, integrations, the self-hosted server, and the docs site. Follow the steps below for a smooth contribution process.

Before You Start

1. Open an Issue First

Always open an issue before opening a pull request. This lets us discuss the change, avoid duplicate work, and agree on the approach before you write code.

• Search existing issues first.
• If none match, open a bug report or feature request.
• For anything beyond a trivial fix, wait for a maintainer to confirm the approach.

Every pull request must link to an issue using Closes #<issue-number>.

2. Sign the Contributor License Agreement (CLA)

We cannot merge any pull request until you have signed our Contributor License Agreement (CLA). When you open your first PR, the CLA bot will comment with a link to sign — it takes less than a minute and only needs to be done once.

Submitting Your Contribution through a PR

1. Fork & Clone the repository: Mem0 on GitHub
2. Create a Feature Branch: Use a dedicated branch, e.g., feature/my-new-feature
3. Implement Changes: If adding a feature or fixing a bug, be sure to:
   • Write necessary tests
   • Add documentation, docstrings, and runnable examples
4. Code Quality Checks:
   • Run linting to catch style issues
   • Ensure all tests pass
5. Commit using Conventional Commits (feat:, fix:, docs:, refactor:, test:)
6. Submit a Pull Request against main, linking the issue and filling out the PR template.

For detailed guidance on pull requests, refer to GitHub's documentation.

Python SDK (mem0/)

Dependency Management

We use hatch as our package manager. Install it by following the official instructions.

Do NOT use pip or conda for dependency management. Instead, follow these steps in order:

# 1. Install base dependencies
make install

# 2. Activate virtual environment (this will install dependencies)
hatch shell  # For default environment
hatch -e dev_py_3_11 shell  # For dev_py_3_11 (differences are mentioned in pyproject.toml)

# 3. Install all optional dependencies
make install_all

Pre-commit Hooks

Ensure pre-commit is installed before contributing (hooks run ruff + isort):

pre-commit install

Linting with ruff

Run the linter and fix any reported issues before submitting your PR (line length 120):

make lint

Code Formatting

To maintain a consistent code style, format your code and sort imports (isort, profile = "black"):

make format
make sort

Testing with pytest

Run tests to verify functionality before submitting your PR:

make test

Note: Some dependencies have been removed from the main dependencies to reduce package size. Run make install_all to install necessary dependencies before running tests.

TypeScript SDK (mem0-ts/)

We use pnpm (v10+) for all TypeScript packages. Do NOT use npm or yarn.

cd mem0-ts
pnpm install

pnpm run build        # tsup (CJS + ESM)
pnpm run test         # jest (all tests)
pnpm run test:unit    # unit tests with coverage

Standards

• Build: tsup
• Formatter: Prettier
• Tests: jest
• Always run type checking after changes: pnpm run typecheck (or tsc --noEmit)
• Use ES module import syntax — never require()

Reporting Security Issues

Do not report security vulnerabilities through public issues or pull requests. Please follow our Security Policy to report them privately.

Release Process

Packages are published automatically via GitHub Actions when a GitHub Release is created with the correct tag prefix (e.g. v* for the Python SDK, ts-v* for the TypeScript SDK). See CONTRIBUTING.md for the full tag-prefix table and publishing details.

Thank you for contributing to Mem0!