What is a blockchain?
Transactions, validators, wallet signatures, smart contracts and finality without the vague buzzwords.
Chrome · Free · No wallet · No tracking
Paper trade memecoins.
Real prices. Fake money.
Ghostbag sits on top of the terminal you already use and lets you buy and sell the coin on screen at its live price — with money that isn’t yours. Real fees, real price impact, fake money, on Solana, BNB Chain and Robinhood Chain. It never connects a wallet, never asks for a key, and never signs anything.
Watch Ghostbag in action.
Live on the terminal
One click is the order.
Ghostbag stays beside the chart instead of replacing it. Choose a SOL size to buy immediately, sell a percentage with one click, and keep the position tape visible in SOL or USD.
Inside Ghostbag
Every click leaves evidence.
The panel does not stop at buy and sell. It keeps a readable record of what happened, when it happened, and what the trade cost.
Trade history
Open positions move with the market.
Track total paper PnL, win rate and trade count beside every active position. Entry market cap, current market cap and live position PnL update together, while completed trades remain in a readable local history.
Performance calendar
Find the days that changed your month.
Daily realized PnL sits on a calendar beside monthly profit or loss, win rate, completed trades and return.
Share cards
Share a recorded result, not a vague claim.
Build a monthly recap from the local ledger, choose a theme or image, then download or copy a card clearly labelled as paper trading.
Execution settings
Make the controls match your trading style.
Set priority fees, Jito tips and slippage, then arrange up to eight one-click SOL buy amounts and eight percentage-based sell presets. Every valid quick fill executes without an extra confirmation step.
Appearance and sound
Keep a fast panel readable.
Scale the full interface without clipping, switch among four bundled typefaces, and choose whether paper fills use sound. Volume and fill-sound controls make feedback noticeable without taking over the chart.
Paper wallet controls
Change the practice account, not a real wallet.
Select a local paper wallet, set a starting SOL balance and begin a clean run while older trades stay archived. Reset and dashboard controls remain available from the same settings panel.
Looking real is not enough.
A trading simulator has to react. Ghostbag follows the coin on screen, records the market cap at the click, applies your execution settings and moves the paper position with the live market.
The price moves. The click lands. The fees count. The fill stays in your history.
Practise before real money is involved. Ignore liquidity, fees or the exit and you can become someone else’s exit liquidity.
Market basics
Know what moves beneath the chart.
A candle is the visible end of a signed transaction, a network fee, a smart contract and a liquidity change. Learn those parts before you size a trade.
How Solana works
Slots, leaders, priority fees, token programs, account locks and the reasons a transaction can fail.
How BNB Chain works
BNB gas, BEP-20 tokens, contract approvals, transfer taxes and EVM liquidity pools.
How memecoins work
Market cap, pool depth, bonding curves, price impact, holder concentration and exit-liquidity risk.
The whole argument
A free round trip is a lie.
Most paper-trading tools price a trade as amount ÷ price. Buy and sell at the same price and you break even, so you learn that trading is free. It isn’t, and that lesson costs real money the first time you believe it.
Ghostbag charges what the chain charges. Here is one SOL, bought and sold on a pump.fun coin whose price never moved.
Every figure is what the engine actually computes. If a round trip at an unchanged price ever nets zero, the fee model is wrong — that invariant is asserted in the test suite.
Round trip · 1 SOLPrice unchanged
Buy1.0000 SOL
Platform fee · 1.00%−0.0100
LP fee · 1.00%−0.0099
Token account rent−0.0020
Priority fee + tip−0.0020
Sell100% of position
Platform + LP on the way out−0.0195
Priority fee + tip−0.0020
Net−0.0455 SOL · −4.53%
How it works
Four steps.
Install it
Add the extension to Chrome. No account, no email, no wallet connection.
Open any coin
Go to a supported terminal and open a token. The panel names it and starts pricing it.
Click a size
Presets execute on one click. Set your own, up to eight a side, in SOL or as a percentage.
Read the tape
Invested, sold, remaining and PnL update live, with entry and current market cap below.
Why choose Ghostbag
Better numbers, or it isn't practice.
A simulator that hands your money back on a flat round trip has taught you that trading is free. Everything you then "learn" from it is inflated. These are the differences that change what you take away.
Real fees, every one of them
Network fee, priority fee, Jito tip, token-account rent, your terminal's platform fee, the pool's LP fee and BNB transfer tax — all charged to the paper balance, per site and per venue.
Real price impact
Constant product against the pool's actual reserves. One SOL into a $3,000 pool hurts exactly as much as it would on chain, and you see it before you commit.
Three chains, priced properly
Solana with a direct pump.fun feed that prices a launch from its first on-chain trade. BNB Chain with live gas. Robinhood Chain through WETH-quoted pools where depth is exact, not estimated.
Evidence, not vibes
Every fill keeps its contract, market cap, impact and result. Win rate, average hold time, a daily PnL calendar and CSV export — all computed from your own ledger.
Privacy
We track nothing. Zero. It's all on your machine.
No account. No email. No analytics, no telemetry, no remote config, no external scripts, no cookies. Your paper wallets, positions and entire trade history are written to your own browser and never leave it — there is no server to send them to.
What stays with you
Wallets, positions, every trade you have ever made, your settings and your panel layout. Delete the extension and all of it goes with it.
What we can see
Nothing. The only requests made are read-only public price lookups for the token on your screen, carrying no identifier of any kind.
Common questions
Asked and answered.
Is Ghostbag free?
Yes. It is free, there is no account, nothing to subscribe to and no paid tier. There is no upsell because there is no business model attached to your data.
Do I need to connect a wallet?
No. Ghostbag never requests wallet permissions and never touches window.solana or window.ethereum. There are no keys, no seed phrases and nothing is ever signed. The money is paper.
Which chains does it support?
Solana, BNB Chain and Robinhood Chain — with the correct native coin, gas model, venue fees and pool depth on each.
Which sites does it work on?
pump.fun, Axiom, Padre, Photon, BullX, DexScreener, GMGN and four.meme, plus a generic reader that picks a valid token address out of the URL elsewhere.
How accurate is the simulation?
It models network fees, priority fees, Jito tips, token-account rent, platform and LP fees, BNB transfer taxes, constant-product price impact, latency, slippage rejection and reverts, using integer base units throughout. It is a simulation, not a promise — but it will never tell you a flat round trip was free.
Does my trading data leave my machine?
No. There is no analytics and no telemetry, and no server holds your history. The privacy policy spells out exactly what is stored and what is requested.
Start now
Learn the mechanics before they cost you.
Free, no account, nothing signed. Install it, open a coin, and find out what your last hundred trades would really have returned.