---
title: "Lichess (@lichess)"
description: "Free and open-source online chess server run by a nonprofit."
account: "lichess"
---

# Lichess

Free and open-source online chess server run by a nonprofit.

## APIs

1 public API with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/lichess/feed.md

- [Lichess.org API reference](https://skmtc.dev/lichess/apis/lichess-org-api-reference.md): Chess: play games, run tournaments, read cloud evals, opening and endgame lookups