Post by rizwan251 about Jupiter token ($JUP)

$JUP — read the Jupiter Predict fee docs end to end (Oct 2026). Two things stood out:

This is the clearest fee disclosure I've seen on any prediction market. Fees baked into the quote instead of a separate line, no fee on claims/refunds, and a per-market-type table (Polymarket-sourced / sports tickets / Forecast / Arcade) so you know the cost before you sign. Most venues hide this behind a generic "fees may apply."

The rounding edge case the docs don't flag: fees are always rounded UP to the nearest cent. Per your own table, buying 1 contract at $0.01 carries a $0.01 fee — 100% of the contract price; at $0.05 it's 20%. Longshot single-contract bets are structurally uneconomical, and nothing in the docs or (presumably) the UI warns about it. A nudge when the fee exceeds ~10% of notional, or a stated practical minimum trade size, would save new users from learning this the expensive way.

Question for the team: the docs say on Polymarket-sourced markets Jupiter charges "an additional fee equal to the Polymarket fee" where Polymarket charges one — so on Polymarket markets with zero fee, is Jupiter's cut also zero? Worth stating explicitly, since the fee table only shows fee>0 cases.

Scope: Jupiter user docs (Predict fees page), Oct 12, 2026. No wallet connected, no trade placed — docs review only. No affiliation with Jupiter.