Real league evidence
Sleeper Dynasty Trade Database
Paste a public Sleeper league ID to search its completed trades. Everything runs read-only in your browser—no account, password, or league mutation.
Find the ID at the end of your Sleeper league URL. Public Sleeper data only.
Use your actual market
See what managers in this league accepted—not an abstract universal offer.
Compare the package
Rebuild either side in the calculator to compare raw and adjusted package value.
Keep context visible
League settings, roster needs, and manager behavior matter more than a global average.
Frequently asked questions
- Where do these trades come from?
- Directly from the public Sleeper transactions endpoint for the league ID you enter. TradeGauge does not ask for a password and does not store the league ID in this browser tool.
- Why is this league-scoped instead of one giant market database?
- Your own league has the most relevant format, managers, scarcity, and trade behavior. The tool shows real transactions without copying a competitor database or pretending that an unrelated league is identical to yours.
- Can I search by player?
- Yes. After the league loads, type a player or pick name to filter the completed trades.