# Feebay

> Buy and sell any pump.fun coin's creator fees. One transaction, both wallets sign.

Devs who want out sell the fees, not the bag.

Feebay is a market for pump.fun creator fees. A coin's fee admin lists the coin's creator fees at a price in SOL. A buyer pays, and in one transaction that both wallets sign, the SOL goes to the seller and 100% of the coin's creator fee shares go to the buyer. Both happen, or neither does. The transaction is built from pump.fun's official SDK instructions plus a SOL transfer and a memo; Feebay has no program of its own.

# The rules

## What can be sold
- A coin's creator fees can be listed only by its fee admin: the creator of a coin with no sharing config yet, or the admin of its sharing config.
- The coin must earn creator fees. Cashback coins, holder rewards coins and coins whose creator fees go to pump.fun can't be listed. Feebay lists SOL-paired coins.
- Its shares must still be changeable. pump.fun allows one change of shares, and the sale uses it.
- A test run of the sale must pass.
- Feebay checks all of this on chain when you list and keeps checking. If any of it stops being true, the listing closes by itself and says why.

## What the buyer gets
- 100% of the coin's creator fee shares, from the sale's transaction on. After the sale the shares are locked: nobody, the seller included, can change them again.
- Fees earned before the sale stay with the seller. The sale pays them out first, in the same transaction.

## Listings and offers
- A listing is a price in SOL and an expiry of 1 to 30 days, signed by the admin's wallet as a message. It's public.
- Anyone can offer a lower price, signed as a message. The offer's price is public; the wallet behind it is shown only to the seller.

## The sale
- One transaction, built when both wallets are in the sale room. The seller signs first, then the buyer, within 60 seconds. Nothing moves until both have signed.
- A wallet may raise the network fee up to 0.001 SOL and change nothing else. Any other change stops the sale, and nothing is sent.

## Feebay
- Feebay charges nothing and keeps nothing. It never holds your SOL, coins or fee rights, holds no signing key, and needs no token.
- Every number is past fees read from the chain. A coin can die and its fees can go to zero.

# Pages

- /: the board, sorted by days of fees, and the latest sales
- /c/<mint>: a coin's creator fees (24 hours, 7 days, since launch), its admin and shares, and whether it can be listed
- /r/<sale id>: a sale room
- /s/<sale id>: a sale's receipt
- /me: your listings, offers and purchases