Lichess

Lichess Bot API

Play on Lichess as a bot. Allows engine play. Read the [blog post announcement of lichess bots](https://lichess.org/blog/WvDNticAAMu_mHKP/welcome-lichess-bots). Only works with [Bot accounts](#tag/bot/POST/api/bot/account/upgrade). ### Features - [Stream incoming chess moves](#tag/bot/GET/api/bot/game/stream/{gameId}) - [Play chess moves](#tag/bot/POST/api/bot/game/{gameId}/move/{move}) - [Read](#tag/bot/GET/api/bot/game/stream/{gameId}) and [write](#tag/bot/POST/api/bot/game/{gameId}/chat) in the player and spectator chats - [Receive](#tag/bot/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/bot/POST/api/bot/game/{gameId}/abort) and [resign](#tag/bot/POST/api/bot/game/{gameId}/resign) games - Engine assistance is [allowed](https://lichess.org/page/fair-play) ### Restrictions - Bots can only play challenge games: pools and tournaments are off-limits - Bots cannot play UltraBullet (¼+0) because it requires making too many requests. But 0+1 and ½+0 are allowed. - Bots must follow [Lichess TOS](https://lichess.org/terms-of-service) specifically Sandbagging, Constant Aborting, Boosting, etc - Bot devs are advised to make their Bots play casual only when testing their Bots logic and to avoid breaking Lichess TOS. ### Integrations - [Python3 lichess-bot](https://github.com/lichess-bot-devs/lichess-bot) (official) - [Python3 lichess UCI bot](https://github.com/Torom/BotLi) - [JavaScript bot-o-tron](https://github.com/tailuge/bot-o-tron) - [Golang lichess-bot](https://github.com/dolegi/lichess-bot) - [Electronic Chessboard](http://www.oliviermercier.com/res/projects/chessboard/) - Yours? Please make [an issue or pull request](https://github.com/lichess-org/api). ### Links - [Announcement](https://lichess.org/blog/WvDNticAAMu_mHKP/welcome-lichess-bots) - Join the [Lichess Bots team](https://lichess.org/team/lichess-bots) with your bot account - [Get help in the discord channel](https://discord.gg/quwueFd) - Watch [Lichess Bot TV](https://lichess.org/tv/bot)

GitHub OpenAPI

Operations 13

GET /api/stream/event Stream incoming events #
GET /api/bot/online Get online bots #
POST /api/bot/account/upgrade Upgrade to Bot account #
GET /api/bot/game/stream/{gameId} Stream Bot game state #
POST /api/bot/game/{gameId}/move/{move} Make a Bot move #
POST /api/bot/game/{gameId}/chat Write in the chat #
GET /api/bot/game/{gameId}/chat Fetch the game chat #
POST /api/bot/game/{gameId}/abort Abort a game #
POST /api/bot/game/{gameId}/resign Resign a game #
POST /api/bot/game/{gameId}/draw/{accept} Handle draw offers #
POST /api/bot/game/{gameId}/takeback/{accept} Handle takeback offers #
POST /api/bot/game/{gameId}/claim-victory Claim victory of a game #
POST /api/bot/game/{gameId}/claim-draw Claim draw of a game #

Documentation

📖
Documentation
https://lichess.org/api

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/openapi/lichess-bot-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-bot-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  version: 2.0.144
  title: Lichess.org API reference Bot 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:


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# Full source: https://raw.githubusercontent.com/api-evangelist/lichess/refs/heads/main/openapi/lichess-bot-api-openapi.yml