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Sleeper Leagues API

The Leagues API from Sleeper — 4 operation(s) for leagues.

Sleeper Leagues API is one of 8 APIs that Sleeper publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Leagues. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 4 operations across 4 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against a single base URL, https://api.sleeper.app/v1.

4 operations 4 paths 3 schemas 4 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Base URL
https://api.sleeper.app/v1
Resource Areas
1

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 GET. Each is listed below with its method, path, parameters, and response codes.

Leagues 4
GET
/user/{user_id}/leagues/{sport}/{season}
Get all leagues for a user
getUserLeagues 3 params → 200404429
GET
/league/{league_id}
Get a specific league
getLeague 1 param → 200404429
GET
/league/{league_id}/rosters
Get all rosters in a league
getLeagueRosters 1 param → 200404429
GET
/league/{league_id}/users
Get all users in a league
getLeagueUsers 1 param → 200404429

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are League (13 properties), Roster (7 properties), User (5 properties). Each schema is shown below with its type and property counts.

User
object
5 properties
League
object
13 properties
Roster
object
7 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

sleeper-leagues-api-openapi.yml Raw ↑

Other APIs Sleeper publishes across the network.

Sleeper Drafts API
Sleeper Matchups API
Sleeper Players API
Sleeper Playoffs API
Sleeper State API
Sleeper Transactions API
Sleeper Users API
Where this information came from

This is an independent, third-party profile of Sleeper Leagues 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.

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