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/sleeper-state-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

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

openapi: 3.2.0
info:
  title: Sleeper Drafts State API
  version: '1.0'
  description: The Sleeper API is a read-only HTTP API that exposes public fantasy sports data — users, leagues, rosters, matchups, transactions, drafts, draft picks, traded picks, and players. It is free to use and requires no API token, because no content can be modified through it. All endpoints are GET requests that return JSON.
  contact:
    name: Sleeper API Docs
    url: https://docs.sleeper.com/
  x-provenance:
    generated: '2026-07-21'
    method: generated
    source: https://docs.sleeper.com/
    note: Authored by the API Evangelist enrichment pipeline from the operations documented at docs.sleeper.com. Sleeper does not publish an OpenAPI; every path, method, and parameter here is transcribed from the public docs.
servers:
- url: https://api.sleeper.app/v1
  description: Sleeper read-only API (v1)
tags:
- name: State
paths:
  /state/{sport}:
    get:
      operationId: getSportState
      summary: Get the current state of a sport
      description: Current week, season, season type and related league-year state for a sport.
      tags:
      - State
      parameters:
      - name: sport
        in: path
        required: true
        schema:
          type: string
          example: nfl
      responses:
        '200':
          description: A state object.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SportState'
        '429':
          $ref: '#/components/responses/TooManyRequests'
components:
  responses:
    TooManyRequests:
      description: Rate limit exceeded — stay under 1000 API calls per minute to avoid IP blocks.
  schemas:
    SportState:
      type: object
      properties:
        week:
          type: integer
        season:
          type: string
        season_type:
          type: string
          description: pre
          regular: null
          or post: null
        league_season:
          type: string
        previous_season:
          type: string
        display_week:
          type: integer
        leg:
          type: integer