Terms of Use
Effective date: October 08, 2025
Acceptance of Terms
By accessing or using LichessTrends, you agree to these terms. If you don't agree, please don't use the site. We're a small open-source project, so these terms are meant to keep things fair and straightforward.
Use of the Site
Feel free to browse, explore charts, and use the API for personal or non-commercial purposes. Don't scrape the site excessively, try to hack it, or use it in ways that could harm others. The data comes from Lichess's public dumps, so respect their guidelines too.
Content and Data
All stats and charts are based on aggregated, anonymous game data from Lichess. We don't claim ownership over the raw data - that's Lichess's. Our code is open-source under MIT, so you can fork or contribute if you want.
Disclaimer
The site is provided "as is" without any warranties. We try to keep things accurate, but chess data can have quirks, and we're not liable for any issues arising from using this tool. Use at your own risk.
Changes to Terms
We might tweak these terms occasionally. We'll update the date here, and your continued use means you accept the changes.
Governing Law
These terms are governed by the laws of France (since Lichess is based there), without regard to conflict of law principles.
Contact Us
Got feedback or concerns? Check the GitHub repo or drop us a line through the footer links.