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Sleeper API

Free, read-only API for Sleeper fantasy leagues, rosters, drafts and players

Data APILineup management
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About Sleeper API

Sleeper publishes a free, read-only HTTP API that needs no token. It exposes users, leagues, rosters, matchups, transactions, drafts, the full player database and trending adds and drops. Developers use it to build league dashboards and tools for Sleeper fantasy leagues. The docs ask callers to stay under 1,000 requests per minute and say only the NFL is currently supported.

Features

  • Users and leagues endpoints
  • Rosters, matchups and playoff brackets
  • Transactions and traded picks
  • Draft and pick data
  • Full player database
  • Trending adds and drops

Sports and sites covered

Sports

Works with

  • Sleeper

Pricing

Free

No API key required

Prices as listed on docs.sleeper.com when we checked. Confirm current pricing on their site.

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Sources and corrections

Last checked Oct 3, 2026. We build every listing from the sources below and recheck them regularly. If something about Sleeper API has changed, let us know.