docs — minepad

What you need

Minecraft 26.1.2 with the Fabric loader — Fabric installer
Fabric API in your mods folder — Modrinth
Node.js on your machine, to run the backend
A little ETH on Robinhood Chain (at least 0.003 to fund a launch)

1. Install the mod

Download minepad-1.0.0.jar and drop it into your mods folder, next to fabric-api-*.jar:

%APPDATA%\.minecraft\mods\

Launch Minecraft 26.1.2 with the Fabric profile. Feather client works too.

2. Start the backend

The backend creates the dev wallet, watches it for funding, and signs the launch transaction. It binds to localhost only.

cd backend
npm install
npm start        # http://127.0.0.1:8787

On Windows you can double-click backend/start.bat instead. Keep it running while you play.

Check it without spending anything

This simulates a real mainnet launch against a fake balance, end to end:

npm run dry-run 0.01

Environment variables

PORT — default 8787
HOST — default 127.0.0.1
RPC_URL — Robinhood Chain RPC endpoint
MIN_FUND_ETH — default 0.003
STORE_FILE — default ./sessions.json. Contains private keys. Keep it private.
PINATA_JWT — optional. Uploads token images to IPFS. Without it, images go to catbox.moe as a plain https URL, which renders fine.

3. Launch a token

In any world, open chat and type /launch. A native Minecraft screen opens with fields for name, ticker, description, image, X, Telegram, website, your wallet, and creator tax.

Put your own address in the “Your wallet” field. Creator fees and the dev-buy tokens then go straight to you. Leave it blank and everything lands in the disposable dev wallet — recover it later with /launch sweep.

Submitting the form creates a throwaway dev wallet. Its address and private key appear in your chat — click to copy. Send at least 0.003 ETH on Robinhood Chain to that address. The mod polls the balance every 3 seconds and tells you the moment it lands.

Then simulate, then ship:

/launch preview      # free: fee, gas, tokens you would receive
/launch go           # ship it, dev buy = wallet minus fee and gas
/launch go 0.01      # ship it with exactly 0.01 ETH dev buy

Command reference

command	what it does
/launch	Opens the form.
/launch image	Sets the token picture from a local file path (up to 4 MB png/jpg/gif/webp) or a URL. The form field accepts a file path directly too. Defaults to your player head.
/launch preview	Simulates the launch on-chain. Costs nothing.
/launch go	Launches. Dev buy is the wallet balance minus the 0.0005 ETH fee minus gas.
/launch go 0.01	Launches with an exact dev buy.
/launch status	Wallet balance, plus graduation progress once launched.
/launch key	Re-shows the dev wallet private key.
/launch sweep 0x…	Sends leftover ETH and any held tokens to an address you choose.
/launch server http://…	Points the mod at a different backend.
/launch reset	Clears the session. Shows the old key first.

What the backend actually sends

No dev buy — launchToken(params, 0, ETH, []) with value = 0.0005 ETH.
With a dev buy — launchAndBuy(params, 0, ETH, devBuy, minTokensOut, recipient, []) with value = 0.0005 + devBuy. Atomic launch and first buy, 2% slippage, snipe-tax exempt.

The token is a fixed 1,000,000,000 supply on a bonding curve with a 1% trade fee, plus your optional creator tax of up to 10%. It graduates into a locked Uniswap v4 pool at 4.2 ETH raised.

Contracts — Robinhood Chain (4663)

factory        0x7eD598BcEf8bd9Edd8C97A195C6d13f40801EC7e
launch-and-buy 0xe33E9E479dF8802cb0866d5d05258bEc4cF62948

Safety

The dev wallet key is shown only in your local chat and stored on your disk in the backend session store and the mod config. In single-player it never leaves your machine.
Do not run the backend on a host you do not control.
Launch transactions are irreversible. Use /launch preview first.

download minepad 1.0.0 see launched tokens

Set up minepad.