How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
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).

Documentation Provider Profile APIs.io OpenAPI GitHub

Lichess Board API is one of 23 APIs that Lichess publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

This API exposes 2 JSON Schema definitions.

Tagged areas include Boards. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an AsyncAPI specification, a JSON-LD context, and 2 JSON Schemas.

This API exposes 13 operations across 12 paths, and defines 35 schemas. It is described by OpenAPI 3.1.0, at version 2.0.144.

Requests are made against 4 base URLs: https://lichess.org, https://lichess.dev, http://localhost:{port}, http://l.org.

13 operations 12 paths 35 schemas 3 GET10 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
2.0.144
Base URL
https://lichess.org
Authentication
OAuth 2.0
Contact
Lichess.org API
License
AGPL-3.0-or-later
Resource Areas
1

Authentication & Security 1

Lichess Board API declares 1 security scheme for authenticating requests. It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 23 scopes.

  • OAuth2 — Read [the introduction for how to make authenticated requests](description/authentication).

Paths & Operations 13

Across 12 paths, the API surfaces 13 operations — 3 GET, 10 POST. Each is listed below with its method, path, parameters, and response codes.

Board 13

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). Fea…

GET
/api/stream/event
Stream incoming events
apiStreamEvent → 200
POST
/api/board/seek
Create a seek
apiBoardSeek body → 200400
GET
/api/board/game/stream/{gameId}
Stream Board game state
boardGameStream 1 param → 200404
POST
/api/board/game/{gameId}/move/{move}
Make a Board move
boardGameMove 3 params → 200400
POST
/api/board/game/{gameId}/chat
Write in the chat
boardGameChatPost 1 param body → 200400
GET
/api/board/game/{gameId}/chat
Fetch the player chat
boardGameChatGet 1 param → 200
POST
/api/board/game/{gameId}/abort
Abort a game
boardGameAbort 1 param → 200400
POST
/api/board/game/{gameId}/resign
Resign a game
boardGameResign 1 param → 200400
POST
/api/board/game/{gameId}/draw/{accept}
Handle draw offers
boardGameDraw 2 params → 200400
POST
/api/board/game/{gameId}/takeback/{accept}
Handle takeback offers
boardGameTakeback 2 params → 200400
POST
/api/board/game/{gameId}/claim-victory
Claim victory of a game
boardGameClaimVictory 1 param → 200400
POST
/api/board/game/{gameId}/claim-draw
Claim draw of a game
boardGameClaimDraw 1 param → 200400
POST
/api/board/game/{gameId}/berserk
Berserk a tournament game
boardGameBerserk 1 param → 200400

Schemas 35

The contract defines 35 schemas that model the data the API accepts and returns. The most detailed are GameEventInfo (21 properties), ChallengeJson (15 properties), GameFullEvent (14 properties), GameStateEvent (13 properties). Each schema is shown below with its type and property counts.

PatronColor
integer
Players can choose a color for their Patron wings. See [here for the color mappings](https://github.com/lichess-org/lila/blob/master/ui/lib/css/abstract/patron…
ChallengeColor
string
ChatLineEvent
object
4 properties 4 required
GameFullEvent
object
14 properties 11 required
Variant
object
3 properties 2 required
GameStateEvent
object
13 properties 7 required
ChallengeCanceledEvent
object
2 properties 2 required
Patron
boolean
Use patronColor value instead to determine if player is a patron.
VariantKey
string
ChallengeUser
object
10 properties 2 required
GameColor
string
NotFound
object
1 property 1 required
GameEventInfo
object
21 properties 2 required
PlayerGameChat
array
ChallengeDeclinedEvent
object
2 properties 2 required
Ok
object
1 property 1 required
GameStartEvent
object
2 properties 2 required
GameCompat
object
2 properties
ChallengeDeclinedJson
GameStatusId
integer
Flair
string
See [available flair list and images](https://github.com/lichess-org/lila/tree/master/public/flair)
Error
object
1 property 1 required
ChallengeStatus
string
Speed
string
GameStatusName
string
GameEventPlayer
object
6 properties 2 required
ChallengeJson
object
15 properties 11 required
OpponentGoneEvent
object
3 properties 2 required
GameSource
string
GameFinishEvent
object
2 properties 2 required
TimeControl
Title
string
only appears if the user is a titled player or a bot user
GameStatus
object
2 properties 2 required
GameEventOpponent
ChallengeEvent
object
3 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

lichess-board-api-openapi.yml Raw ↑

Other APIs Lichess publishes across the network.

Lichess Account API
AE Profile APIs.io
Lichess Analysis API
AE Profile APIs.io
Lichess Bot API
AE Profile APIs.io
Lichess Broadcasts API
AE Profile APIs.io
Lichess Bulk pairings API
AE Profile APIs.io
Lichess Challenges API
AE Profile APIs.io
Lichess External engine API
AE Profile APIs.io
Lichess FIDE API
AE Profile APIs.io
Lichess Games API
AE Profile APIs.io
Lichess Messaging API
AE Profile APIs.io
Lichess OAuth API
AE Profile APIs.io
Lichess Opening Explorer API
AE Profile APIs.io
#Boards
← Back to L APIs
API Details
ID
lichess:lichess-board-api
Base URL
https://lichess.org
Docs
https://lichess.org/api
Provider
Lichess
APIs.io →  GitHub →
Explore more
All APIs Providers APIs.io Network
Work with this as data

Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.

Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.

MCP tools for apis
4 tools reach this content
  • search_api_evangelistSearch every content type across the network at once.
  • find_relatedThe shared-tag relevance graph — what else covers this.
  • get_tagEverything one tag labels, across all content types.
  • guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
All tools & prompts
Call it yourself
curl for this page
Search the network for this 
curl "https://api.apievangelist.com/v1/search?q=lichess-board-api&limit=10"
Everything under a tag 
curl "https://api.apievangelist.com/v1/tags/lichess-board-api"

Discovery needs no key. Full bodies and the synthesis endpoints are Pro.

Get an API key

Free tier, no email required. Sign in with whichever identity you already have.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have. Your account

Where this information came from

This is an independent, third-party profile of Lichess Board API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.