The itch
I play in two redraft leagues on Sleeper, and I already check FantasyCalc to see whether a trade is fair. A trade calculator only answers half the question, though. It tells me two packages are worth about the same, not whether my lineup gets better, or which manager has the hole that my bench can fill. I wanted something that looks at the whole league and brings me the trades worth sending.
What it does
Type a Sleeper username, pick a league, and it looks at every team.
- Trade ideas, ranked, with both sides, how much each lineup improves, the value balance, and a plain-English reason. Fair, Balanced, and Aggressive change how much the other team has to win too.
- My team: my best lineup, each position against the league median, and the trade chips worth more in a trade than on my bench. I can lock players I won't move, or shop one to see who'd pay for him.
- The league: every team's strengths and holes in one table. Open a team to target one of its players.
- An evaluator for building any trade by hand, or tweaking one of the ideas.
- Links on every player to FantasyCalc, ESPN, FantasyPros, and Sleeper, for the latest news and injuries before I hit send.
How it works
Your browser does almost everything. It pulls the league's rosters and settings straight from Sleeper, and rest-of-season values from FantasyCalc for that exact format: team count, PPR, and superflex. Then it builds each team's best lineup from the league's real starting slots, and tries the one-for-one and two-for-one swaps between teams whose needs fit together.
A trade only makes the list if my lineup gets better and the other manager gets fair value back. Packages are compared the way trade calculators do it, so two decent players don't automatically buy a star.