Byparr

An alternative to FlareSolverr as a drop-in replacement, built with seleniumbase and FastAPI.

Important

Due to recent challenge changes, this software does not guarantee that the Cloudflare challenge will be bypassed. Cloudflare likely requires valid network traffic originating from the user’s public IP address to mark a connection as legitimate. While this tool may bypass the initial browser check, it does not ensure that requests will consistently pass Cloudflare's validation. More testing and data are required to understand how Cloudflare identifies connections and requests as valid. Invalid requests will result in Byparr's looping and eventually time-outing.

Important

Support for NAS devices (like Synology) is minimal. Please report issues, but do not expect it to be fixed quickly. The only ARM device I have is a free Ampere Oracle VM, so I can only test ARM support on that. See #22 and #3

Note

Thanks to FastAPI implementation, now you can also see the API documentation at /docs or / (redirect to /docs) endpoints.

Troubleshooting

Docker

1. Clone repo to the host that has issues with Byparr.
2. Run docker build --target test .
3. Depending of the build success:
   1. If run successfully, try updating container or if already on newest stable release create an issue for creating new release with new dependencies
   2. If build fails, try troubleshooting on another host/using other method

Local

1. Download uv
2. Download dependencies using uv sync --group test
3. Run tests with uv run pytest --retries 3 (You can add -n auto for parallelization)
4. If you see any F character in terminal, that means test failed even after retries.
5. Depending of the test success:
   1. If run successfully, try updating container or if already on newest stable release create an issue for creating new release with new dependencies
   2. If test fails, try troubleshooting on another host/using other method

Options

Env	Default	Description
USE_XVFB	SeleniumBase default	Use virtual desktop with Xvfb. (Linux only) (Can cause performance hog #14)
USE_HEADLESS	SeleniumBase default	Use headless chromium.
PROXY	None	Proxy to use. (format: username:password@host:port)

Tags

• v*.*.*/latest - Releases considered stable
• main - Latest release from main branch (untested)

Usage

Docker Compose

See compose.yaml

Docker

docker run -p 8191:8191 ghcr.io/thephaseless/byparr:latest

Local

uv sync && ./cmd.sh

Need help with / TODO

• Slimming container (only ~650 MB now!)
• Add more anti-bot challenges
• Add doc strings
• Implement versioning
• Proxy support
• Add more architectures support