Coins paired to real forex pairs, made to move together.

Everything about Fx, in one place.

Overview

Fx is a launchpad on Solana for coins that follow a real currency pair. Every coin is linked to one forex market: EUR/USD, GBP/USD or AUD/USD, with USD/JPY, USD/CHF, USD/CAD, NZD/USD and USD/MXN coming soon. Its price moves with both its own trading and that pair's rate.

• Names and tickers can be copied by anyone. Always check a coin's address, not just its ticker.
• A coin's website link is added by its creator, and Fx doesn't check it. Be careful with any site that asks you to connect your wallet, sign something, or "claim" a reward: Fx's rewards arrive in your wallet on their own.
• Each coin trades on its own curve, not a shared order book.
• Coins can be volatile and thin, and can lose all their value.

How prices work

A coin's price has two parts:

• Curve price. Set by the coin's own buying and selling. Every buy moves the price up the coin's curve, and every sell moves it down.
• Pair factor. How far the coin's forex pair has moved since the coin launched, scaled up so the move is easy to see. Each 1% the pair moves changes the coin's price by about 5%.

You trade at curve price × pair factor, where pair factor = (rate now ÷ rate at launch)^5.

Example. You launch a coin paired with EUR/USD when the rate is 1.1500. A week later the rate is 1.1615, which is 1% higher. The pair factor is about 1.05, so the coin trades about 5% above its curve price, even if nobody traded it that week. If EUR/USD had fallen 1% instead, the coin would trade about 5% below its curve price.

Every pair works the same way, as it's written: when USD/JPY goes up, a USD/JPY coin goes up. How far the pair factor can move is limited by the coin's pair buffer.

Pairs & price feed

Three pairs are live: EUR/USD, GBP/USD and AUD/USD. USD/JPY, USD/CHF, USD/CAD, NZD/USD and USD/MXN are coming soon. A coin's pair is set at launch and never changes. We don't invent a pair that isn't a real, liquid forex market.

• New pairs. Fx can list up to 32 pairs. Pairs are only ever added: once a pair is listed, nobody can change its price feed or remove it, so no coin can ever be switched to another rate.
• Where rates come from. Fx reads forex rates from Pyth Network, a price feed that many Solana apps use.
• The latest rate. Every trade uses the latest rate Pyth has published on Solana. Fx doesn't use an average, because an average is predictable: traders could buy before it moves and sell after, and the other holders would pay for it. A trade can never use a rate older than one already used.
• Delay fee. Pyth refreshes its rates on Solana every few minutes. A rate up to a minute old costs nothing extra. After that, trades pay a delay fee of 0.1% for each extra minute, which goes into the coin's pair buffer. A rate older than 10 minutes doesn't count as live.
• Fast-market fee. When forex moves fast, like on big news, the feed's prices get less certain and trades pay a small extra fee that goes into the coin's pair buffer. In calm markets it's under 0.01%. Together with the delay fee, it's capped at 2%.
• When a pair freezes. The pair factor holds at its last good value while the forex market is closed (Friday evening to Sunday evening, New York time), when the latest rate is more than 10 minutes old, or when the feed reports unusually uncertain prices. If the feed goes quiet or gets very uncertain while the market is open, trades pay the full 2% fast-market fee until it's back. USD/MXN also takes a one-hour break each weekday at 5 pm New York time, when its rate isn't published: trades in that hour pay the delay fee and then the full 2%, and new USD/MXN coins can launch again once the rate is back.
• Trading never stops. While a pair is frozen, its coins keep trading on their curve. Only the pair's effect pauses, and the live rate takes over again as soon as the feed is back.

Pair buffer

Each coin has its own pair buffer: a pool of SOL that pays for the pair's effect on the price. It makes sure a coin can always pay every seller, however its pair moves.

• The buffer fills up from 0.60% of every trade on the coin, plus the fast-market and delay fees.
• Anyone can add to it. The creator or anyone in the community can top up a coin's buffer from its page, so the coin can follow bigger moves sooner. A top-up is a gift to the coin: it can never be taken back.
• When the pair has pushed the price up, the extra paid out to sellers comes from the buffer, and the extra paid in by buyers goes into it. When the pair has pushed the price down, it works the other way around.
• The pair factor can only move as far as the buffer can cover, in either direction. A new coin with a small buffer barely follows its pair. A busy coin with a big buffer follows it fully.
• The buffer belongs to the coin. Nobody can withdraw it, not the creator and not Fx.

Holders' rewards

Every trade rewards the coin's holders. 1% of each buy and each sell is saved inside the coin for the people who hold it, then paid straight to their wallets, every 15 minutes.

• Paid in a digital dollar or euro. Coins on EUR/USD, and on any euro pair Fx lists later, pay in EURC, a digital euro. Coins on every other pair pay in USDC, a digital dollar. Both are issued by Circle. Rewards are never paid in more of the coin.
• Nothing to claim. Each payout sends your share to your wallet, with the note "Fx holder reward". If you've never held USDC or EURC, Fx pays to open that account in your wallet.
• Shares follow holdings. Every 15 minutes, each wallet holding at least $15 of the coin, at its live price, gets a share of the new rewards by how much it holds. The longer you hold, the more times you share. The curve's unsold coins and program accounts, such as pools, never get rewards.
• Small shares add up. Your shares are sent once they reach 10 cents, so network fees never eat them. Until then they keep adding up for you, and the coin's page shows how much. If you stop holding, what you've earned is still sent once it reaches 10 cents; anything under 10 cents goes back to the pot for everyone after 30 days.
• A fair swap. Before a payout, the saved SOL is swapped into USDC or EURC. The program only allows the swap at the live Pyth price, less at most 1%, so the rewards keep at least 99% of their value.
• Checked before it pays. Each payout's full list is public on the coin's page, and its fingerprint is written on-chain. The program pays only what's on that list, only once per wallet, and only after a wait of at least an hour, so a wrong list can be cancelled before anything is paid. A new list is made every 15 minutes, so after the first hour, payouts arrive every 15 minutes. A cancelled payout's money goes back to the pot.
• Never stuck. Payouts are sent automatically. If yours is late, you can collect it yourself from the coin's page; your wallet pays the network fee.
• Creators earn like any holder, on the coins they hold.
• Nobody can take the rewards for anything else, not the creator and not Fx.

How launches work

Launching a coin sets its name, ticker, pair, picture, description and link in a single step. There's no separate configuration screen, and after launch nothing about a coin can be changed, not even by its creator.

Buying & selling

• Before your wallet opens, Fx shows what you'll get, the fees, and your limit.
• Two limits protect every buy: the most SOL you'll pay, and the fewest coins you'll accept. If someone's trade lands just before yours and moves the price past your limit, yours simply doesn't happen, and nothing is taken but the tiny network fee.
• Every sell has a limit too: the least SOL you'll accept.
• Fx does a free dry run of every transaction first. If it would fail, you see why and nothing is sent.
• You can always sell, before and after a coin migrates, so you can always get out.

Bonding & migration

Every coin starts in the New stage, trading on its launch curve. When buyers have put about 85 SOL into the curve, every curve coin is sold and the coin migrates: it shows Migrated and moves into its own Fx pool, in the same trade that bought the last curve coin.

• The pool gets the SOL the curve raised and the 206.9 million coins set aside at launch (about 21% of the supply). A one-time 2.5% bonding fee comes out of the curve's SOL, so the pool opens 2.5% below the curve's last price.
• Trading goes on in the pool, on this site, with the same 2% fee, the same pair effect and buffer, and the same holders' rewards. Nothing resets: the coin keeps its chart, its buffer and its history.
• The pool never sells out. Each coin costs a little more than the last, so the price can keep rising, and holders can always sell.
• The pool's money is locked for good. There are no pool shares to pull out; only trades move it.
• Other apps, like Phantom's swap or Jupiter, can trade Fx pools once they add support for Fx.
• Migrating isn't guaranteed. Most coins stay in New for as long as people trade them.

Fees

Fx charges three fees: a $0.50 launch fee, a 2% trading fee on every buy and every sell, and a one-time 2.5% bonding fee. The trading fee is split four ways: 1.00% of each trade is saved for the coin's holders, 0.60% goes into the coin's own pair buffer, 0.10% to the coin's creator, and 0.30% to Fx. When forex moves fast, or the rate is more than a minute old, trades also pay a small fast-market or delay fee that goes into the coin's pair buffer. At least half of Fx's income buys back and burns the FX token. The full breakdown is on the Revenue page.

The FX token

FX is Fx's own token. At least half of everything Fx earns, from its share of trades, launch fees and bonding fees, buys FX on the open market, and every FX bought is burned for good.

• FX starts with 1 billion tokens. Burns only lower that number, and nobody can create more.
• The Revenue page shows what's waiting to buy FX, how much has been spent on FX buybacks and how much FX has been burned.
• FX isn't a share in Fx. Holding it doesn't give you ownership, profits or any claim on Fx.

Wallets & safety

Connect wallet asks your wallet (Phantom, Solflare, Backpack or any other Solana wallet) for your public address and nothing else. Your wallet shows an approval popup first, and you can disconnect at any time.

• Every trade opens a wallet popup. Before it does, Fx shows what the trade will do: the SOL you pay or receive, the coins you get or sell, the fee and your limit. Only approve if the popup matches.
• Your wallet signs first. Fx then checks the wallet kept every part of the trade exactly as built, and stops if anything else was added.
• Fx will never ask for your private key or seed phrase. Any site that does is a scam, even if it looks exactly like this one.
• Fx will never message you first to offer help or a deal.
• Fx's only X account is @FXisfun. Any other account using the Fx name isn't us.
• Fx's website is fxfun.trade. Check the address bar before you connect, and bookmark it.
• Keep your savings in a separate wallet that never connects to any site, and trade from a wallet that only holds what you plan to trade.

Security

• Fixed supply. Every coin has exactly 1 billion coins, forever. After launch, nobody can create more coins or freeze anyone's coins, not the creator and not Fx. Each coin's page checks this on-chain.
• Locked money. A coin's SOL, its pair buffer and its holders' rewards stay inside the Fx program. Nobody funds a coin's opening liquidity and nobody can withdraw it, so a creator can't pull the money out.
• Pictures that can't be swapped. A coin's picture, description and link are saved under their own fingerprint, and the coin's link to them is locked on-chain, so they can never be changed after launch. The site checks each fingerprint before showing anything.
• Books that always balance. After every trade, the program checks that the coin holds every lamport it owes. If it didn't, the trade would fail.
• Audit. An independent security firm audits the Fx program before it handles real money, and the full report is made public.
• Open, verified code. Before Fx handles real money, the program's code is made public, and the program running on Solana is verified to match it.
• Program changes. Before Fx handles real money, a multi-signature wallet takes control of upgrades, so no single person can change the program. Every change is announced 48 hours before it takes effect, so anyone who disagrees can sell first.
• Settings with hard limits. The team can change only three settings: the team wallet, the launch fee and the FX buyback share. The program itself caps the launch fee at $5 and always keeps at least half of Fx's income for the FX buyback. No setting can touch a coin's money. Changes go through the same multi-signature wallet, with the same 48-hour notice.
• The website. The site only runs its own code, blocks scripts from other sites, and can't be loaded inside another site. Its one outside library, the chart, is checked and served from the site itself.

Numbers at a glance

These are the launch settings. Any change to them is announced 48 hours ahead.

Reading Fx data

Everything on Fx lives on the Solana blockchain, so anyone can read it without asking us: each coin's account, its trades and its holders. The site reads it straight from Solana too.

• The Fx program's address is shown on the Revenue page.
• Each coin's page links to its address on a Solana explorer.
• Every trade writes a public record with the coins, the SOL and the pair factor it used.
• A read-only public API, for apps and trackers, comes later.

Risks

• You can lose everything you put into a coin. Only trade what you can afford to lose.
• The pair effect is scaled up: a small move in a forex pair makes a much bigger move in its coins, in either direction.
• Price feeds can be wrong, late or frozen. Fx's safety rules limit the damage, but they can't remove it.
• Young coins have small buffers, so they may barely follow their pair.
• Audited code can still have bugs.
• Trading can be thin, so a single trade can move the price a lot.
• Forex trading hours and weekend gaps carry through to every coin that follows a pair.
• USDC and EURC are issued by Circle, which can freeze them.
• FX's price can fall, even with buybacks.
• Nothing on Fx is financial advice.

Terms of service

• Fx is software for creating and trading coins on Solana. Fx never holds your funds: your coins stay in your own wallet. Fx doesn't control markets or guarantee any outcome.
• Users create coins, not Fx. Fx doesn't review, endorse or guarantee any coin.
• A coin isn't a forex contract. Holding one doesn't give you any currency, or any claim on Fx or anyone else.
• Holding FX or any coin doesn't make you an owner of Fx or give you a right to its income.
• You're responsible for following the laws where you live. Don't use Fx where coins like these aren't allowed.
• Fx can hide a coin's picture or description on its site if it breaks the law or these terms.
• Fx can update these terms. Changes are posted on this page.

Privacy notice

• There's no sign-up, and Fx doesn't ask for your name or email. The site uses no cookies or trackers.
• Trades happen on the Solana blockchain, which is public. Anyone can see a wallet's address and its trades.
• If you connect a wallet, Fx only sees your public address.
• A coin's picture and description are public, like everything on the blockchain. The picture is redrawn in your browser first, so hidden details in the file, like where a photo was taken, never leave your device.
• Holders' payout lists are public too: each one shows the wallets in that payout, how many coins each held and how much each gets, so anyone can check it.
• The site saves small things in your browser's storage, like which wallet you used and recent coin data, so pages load faster. They stay on your device.
• The site reads Solana through a public Solana server, which sees your IP address, like any website you visit.
• The site is hosted on Cloudflare, which handles basic connection data, like IP addresses, to deliver and protect the site.