Lichess

Lichess Board API

Play on Lichess with physical boards and third-party clients. Works with normal Lichess accounts. Engine play or assistance is [forbidden](https://lichess.org/page/fair-play). ### Features - [Stream incoming chess moves](#tag/board/GET/api/board/game/stream/{gameId}) - [Play chess moves](#tag/board/POST/api/board/game/{gameId}/move/{move}) - [Read](#tag/board/GET/api/board/game/stream/{gameId}) and [write](#tag/board/POST/api/board/game/{gameId}/chat) in the player and spectator chats - [Receive](#tag/board/GET/api/stream/event), [create](#tag/challenges/POST/api/challenge/{username}) and [accept](#tag/challenges/POST/api/challenge/{challengeId}/accept) (or [decline](#tag/challenges/POST/api/challenge/{challengeId}/decline)) challenges - [Abort](#tag/board/POST/api/board/game/{gameId}/abort) and [resign](#tag/board/POST/api/board/game/{gameId}/resign) games - Compatible with normal Lichess accounts ### Restrictions - Engine assistance, or any kind of outside help, is [forbidden](https://lichess.org/page/fair-play) - Time controls: [Rapid, Classical and Correspondence](https://lichess.org/faq#time-controls) only. For direct challenges, games vs AI, and bulk pairing, Blitz is also possible. ### Links - [Announcement](https://lichess.org/blog/XlRW5REAAB8AUJJ-/welcome-lichess-boards) - [Implementation example](https://github.com/lichess-org/api-demo) and [live demo](https://lichess-org.github.io/api-demo/) - [Certabo support](https://github.com/haklein/certabo-lichess) - [Lichs (play from command-line)](https://github.com/Cqsi/lichs) - [Lichess discord bot](https://top.gg/bot/707287095911120968) - [cli-chess](https://github.com/trevorbayless/cli-chess/) - [Blunderly 3D board](https://github.com/maurimo/blunderly) - Yours? Please make [an issue or pull request](https://github.com/lichess-org/api).

GitHub OpenAPI

Operations 13

GET /api/stream/event Stream incoming events #
POST /api/board/seek Create a seek #
GET /api/board/game/stream/{gameId} Stream Board game state #
POST /api/board/game/{gameId}/move/{move} Make a Board move #
POST /api/board/game/{gameId}/chat Write in the chat #
GET /api/board/game/{gameId}/chat Fetch the player chat #
POST /api/board/game/{gameId}/abort Abort a game #
POST /api/board/game/{gameId}/resign Resign a game #
POST /api/board/game/{gameId}/draw/{accept} Handle draw offers #
POST /api/board/game/{gameId}/takeback/{accept} Handle takeback offers #
POST /api/board/game/{gameId}/claim-victory Claim victory of a game #
POST /api/board/game/{gameId}/claim-draw Claim draw of a game #
POST /api/board/game/{gameId}/berserk Berserk a tournament game #

Documentation

📖
Documentation
https://lichess.org/api

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/openapi/lichess-board-api-openapi.yml
⚙
AsyncAPI
https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/asyncapi/lichess-asyncapi.yml

Schemas & Data

📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/json-schema/lichess-game-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/json-schema/lichess-user-schema.json

Other Resources

🔗
JSONLD
https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/json-ld/lichess-context.jsonld
🔗
SpectralRuleset
https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/rules/lichess-rules.yml

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OpenAPI Specification

lichess-board-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  version: 2.0.144
  title: Lichess.org API reference Board API
  contact:
    name: Lichess.org API
    url: https://lichess.org/api
    email: contact@lichess.org
  x-logo:
    url: https://lichess1.org/assets/logo/lichess-pad12.svg
  license:
    name: AGPL-3.0-or-later
    url: https://www.gnu.org/licenses/agpl-3.0.txt
  description: '# Introduction

    Welcome to the reference for the Lichess API!'
servers:
- url: https://lichess.org
- url: https://lichess.dev
- url: http://localhost:{port}
  variables:
    port:
      default: '8080'
- url: http://l.org
tags:


# --- truncated at 32 KB (44 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/openapi/lichess-board-api-openapi.yml