Lichess

Lichess Tournaments (Arena) API

Access Arena tournaments played on Lichess. [Official Arena tournaments](https://lichess.org/tournament) are maintained by Lichess, but you can [create your own Arena tournaments](https://lichess.org/tournament/new) as well.

GitHub OpenAPI

Operations 14

GET /api/tournament Get current tournaments #
POST /api/tournament Create a new Arena tournament #
GET /api/tournament/{id} Get info about an Arena tournament #
POST /api/tournament/{id} Update an Arena tournament #
POST /api/tournament/{id}/join Join an Arena tournament #
POST /api/tournament/{id}/withdraw Pause or leave an Arena tournament #
POST /api/tournament/{id}/terminate Terminate an Arena tournament #
POST /api/tournament/team-battle/{id} Update a team battle #
GET /api/tournament/{id}/games Export games of an Arena tournament #
GET /api/tournament/{id}/results Get results of an Arena tournament #
GET /api/tournament/{id}/teams Get team standing of a team battle #
GET /api/user/{username}/tournament/created Get tournaments created by a user #
GET /api/user/{username}/tournament/played Get tournaments played by a user #
GET /api/team/{teamId}/arena Get team Arena tournaments #

Documentation

📖
Documentation
https://lichess.org/api

Specifications

⚙
OpenAPI
https://artifacts.apis.io/lichess/openapi/lichess-tournaments-arena-api-openapi.yml
⚙
AsyncAPI
https://artifacts.apis.io/lichess/asyncapi/lichess-asyncapi.yml

Schemas & Data

📊
JSONSchema
https://artifacts.apis.io/lichess/json-schema/lichess-game-schema.json
📊
JSONSchema
https://artifacts.apis.io/lichess/json-schema/lichess-user-schema.json

Other Resources

🔗
JSONLD
https://artifacts.apis.io/lichess/json-ld/lichess-context.jsonld
🔗
SpectralRuleset
https://artifacts.apis.io/lichess/rules/lichess-rules.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/lichess:lichess-tournaments-arena-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

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

OpenAPI Specification

lichess-tournaments-arena-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  version: 2.0.144
  title: Lichess.org API reference Tournaments (Arena) 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 (333 KB total) ---
# Full source: https://artifacts.apis.io/lichess/openapi/lichess-tournaments-arena-api-openapi.yml