---
title: Contribute to HyperFrames
description: Set up the repository, make a focused change, and open a pull request.
---

## Set up the repository

```bash
git clone https://github.com/YOUR_USERNAME/hyperframes.git
cd hyperframes
bun install
bun run build
```

HyperFrames uses Bun for workspace operations. Do not add a `pnpm-lock.yaml` or replace `bun.lock`.

Start Studio while working on UI or composition behavior:

```bash
bun run dev
```

Studio listens on `http://localhost:5190` when run from the monorepo.

## Check your change

Run the smallest relevant test while iterating, then the repository gates before opening a pull request:

```bash
bun run lint
bun run format:check
bun run --filter '*' typecheck
bun run test
```

For a composition, run the gates from the project directory, or pass it:

```bash
npx hyperframes lint ./my-video
npx hyperframes check ./my-video
```

Registry items need a different command. They ship as `<name>.html` or
`demo.html`, and the CLI resolves a project by looking for `index.html`, so
pointing it at an item directory fails with "No composition found" — which is
how two `gsap_non_transform_motion` errors once reached `main` unlinted. Use the
script that mounts each item into a throwaway project first, exactly where
`hyperframes add` would put it:

```bash
bun run lint:registry-items              # every item
bun run lint:registry-items my-block     # just one
```

The pre-commit hooks format staged files and run checks for the files you changed.

## Work in the right package

| Surface | Package or directory |
| --- | --- |
| Composition parsing, runtime, types | `packages/core` and `packages/parsers` |
| Browser frame capture | `packages/engine` |
| Encoding and audio/render orchestration | `packages/producer` |
| Command line | `packages/cli` |
| Browser editor | `packages/studio` and `packages/studio-server` |
| Embeddable player | `packages/player` |
| Headless editing API | `packages/sdk` |
| AWS and GCP distributed rendering | `packages/aws-lambda` and `packages/gcp-cloud-run` |
| Reusable blocks and snippets | `registry` |
| Agent instructions | `skills` |

For Studio changes, verify the behavior in the browser and preserve the source-patching and capability-gate contracts described in the [Studio docs](/studio/index).

## Pull request requirements

- Keep the change focused and explain the user-visible reason for it.
- Add or update tests when behavior changes.
- Use a conventional PR title such as `fix: preserve audio after seeking`.
- Run formatting, lint, typecheck, and relevant tests.
- Include screenshots or a short capture for visual changes.
- Target prerelease-only work to the branch described in [Release channels](/contributing/release-channels).

Use [GitHub Issues](https://github.com/heygen-com/hyperframes/issues) for bugs and proposals. A useful bug report includes the smallest reproduction, the first exact error, `npx hyperframes info`, and the operating system.

By contributing, you agree that your work is licensed under the [Apache 2.0 License](https://github.com/heygen-com/hyperframes/blob/main/LICENSE) and follows the [Code of Conduct](https://github.com/heygen-com/hyperframes/blob/main/CODE_OF_CONDUCT.md).

## Related topics

- [Test local CLI changes](/contributing/testing-local-changes)
- [Contribute a Catalog item](/contributing/catalog)
- [Understand release channels](/contributing/release-channels)
