Mechanics are public
Fee amounts, match behavior, and live odds live on The Codebase and in our legal pages — not buried in marketing.
How It Works
From fee to
Pump.fun launch.
A practical walkthrough of paid spins, treasury losses, rocket launches, and Slot’s matched opening buy — with honest limits.
Step-by-step
pump.fun01
Connect a real wallet
Phantom, Solflare, or Backpack. Demo sessions cannot sign launch transactions.
02
Name your coin
Ticker, optional art, and an opening buy size (SOL). Metadata is hosted for Pump.fun create.
03
Pay the Slot fee
Transfer the published fee to the Slot treasury wallet. Payment is verified before the roll.
04
Server spins
The server rolls win or loss. Your UI animates the returned reels.
05
Loss path
Fee stays in treasury. No create. The loop continues — treasury pressure on Slot.
06
Win path
You sign create (+ your opening buy). Slot then match-buys the same SOL size from the house wallet.
Primary sell
We match your first buy.
Launch with 1 SOL. Slot adds 1 SOL. Your coin opens with 2× the opening buy on the Pump.fun curve — measurable on-chain, no post-launch volume claims.
Your buy
1 SOL
Slot match
1 SOL
equals
Opening buy on the curve
2 SOL
CreatorMatched seedCurve open
What “matched” means
If you open with 1 SOL and win, Slot aims to buy ~1 SOL of your new coin right after create. The bonding curve sees roughly twice the opening buy — a concrete, on-chain seed — not a promise about future volume or price.
Example
- Spin fee: 0.05 SOL (treasury)
- Your opening buy: 1.00 SOL
- Slot match: ~1.00 SOL
- Curve seed: ~2.00 SOL
Design principles
Match can pause
If the match wallet isn’t funded or ready, launches refuse instead of silently skipping the match.
Third parties matter
Pump.fun + Solana execute create and trades. Slot orchestrates fee → spin → match.
No volume promises
Matched opening buy is measurable at T0. Everything after is the market.
Ready when you are.
Pay the fee on /launch. Miss and you fund the pad. Hit rockets and we match your opening buy on Pump.fun.