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Lichess

Lichess Challenges API

Send and receive challenges to play.To create a lot of challenges, consider [bulk pairing](#tag/bulk-pairings/POST/api/bulk-pairing) instead.

Documentation Provider Profile APIs.io OpenAPI GitHub

Lichess Challenges 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 Challenges. 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 11 operations across 11 paths, and defines 23 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.

11 operations 11 paths 23 schemas 2 GET9 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 Challenges 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 11

Across 11 paths, the API surfaces 11 operations — 2 GET, 9 POST. Each is listed below with its method, path, parameters, and response codes.

Challenges 11

Send and receive challenges to play. To create a lot of challenges, consider [bulk pairing](tag/bulk-pairings/POST/api/bulk-pairing) instead.

GET
/api/challenge
List your challenges
challengeList → 200
POST
/api/challenge/{username}
Create a challenge
challengeCreate 1 param body → 200400
GET
/api/challenge/{challengeId}/show
Show one challenge
challengeShow 1 param → 200
POST
/api/challenge/{challengeId}/accept
Accept a challenge
challengeAccept 2 params → 200404
POST
/api/challenge/{challengeId}/decline
Decline a challenge
challengeDecline 1 param body → 200404
POST
/api/challenge/{challengeId}/cancel
Cancel a challenge
challengeCancel 2 params → 200404
POST
/api/challenge/ai
Challenge the AI
challengeAi body → 201400
POST
/api/challenge/open
Open-ended challenge
challengeOpen body → 200400
POST
/api/challenge/{gameId}/start-clocks
Start clocks of a game
challengeStartClocks 3 params → 200
POST
/api/round/{gameId}/add-time/{seconds}
Add time to the opponent clock
roundAddTime 2 params → 200
POST
/api/token/admin-challenge
Admin challenge tokens
adminChallengeTokens body → 200400

Schemas 23

The contract defines 23 schemas that model the data the API accepts and returns. The most detailed are ChallengeOpenJson (16 properties), ChallengeJson (15 properties), ChallengeUser (10 properties), Variant (3 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…
FromPositionFEN
string
Custom initial position (in X-FEN). Variant must be standard, fromPosition, or chess960 (if a valid 960 starting position), and the game cannot be rated.
ChallengeColor
string
Variant
object
3 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
ChallengeOpenJson
object
16 properties 14 required
Ok
object
1 property 1 required
PerfType
string
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
GameStatusName
string
Speed
string
ChallengeJson
object
15 properties 11 required
GameSource
string
TimeControl
Title
string
only appears if the user is a titled player or a bot user
GameStatus
object
2 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

lichess-challenges-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 Board 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 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
#Challenges
← Back to L APIs
API Details
ID
lichess:lichess-challenges-api
Base URL
https://lichess.org
Docs
https://lichess.org/api
Provider
Lichess
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