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4.fun is a fair-launch token marketplace on Robinhood Chain (chain ID 4663). Anyone can create a token with one click and no creation fee. Every token launches instantly tradeable, paired against liquidity on Uniswap V3 — there is no bonding curve, no presale round, and no allocation set aside for the team.

The whole supply of a token (1,000,000 units) is minted straight into its liquidity position at deploy time. From that moment, anyone can buy or sell it on-chain like any other AMM-listed token.

Head to Create and choose a launch mode:

• ETH launch — the default mode. Your token is paired against the chain's native ETH.
• Stock launch — pair your token against a whitelisted tokenized stock (e.g. TSLA, AAPL) instead of ETH. See Tokenized Stocks.

You'll fill in:

• Name and ticker symbol
• A description — or generate one with the built-in AI idea generator by describing your idea in plain language
• An image
• Optional website, X (Twitter), and Telegram links
• An optional initial buy amount, executed atomically in the same transaction as the launch

There is no fee to create a token. The only cost is the gas and the ETH (or stock token) you choose to seed as liquidity / spend on an initial buy.

When you deploy, the Factory contract creates your token with a fixed total supply of 1,000,000 tokens and mints all of it directly to itself — nothing goes to a team wallet, marketing wallet, or advisors.

It then, in a single transaction:

1. Deploys your token to a deterministic address (via CREATE2, salt-mined so the token always sorts after WETH/quote in the pool)
2. Seeds a concentrated-liquidity position for it on Uniswap V3 at a fixed starting price
3. If you chose an initial buy, swaps your extra ETH into tokens immediately from that same pool and sends them to your wallet

From then on, the token trades permissionlessly on Uniswap V3 like any other listed pair — 4.fun's UI is a front-end over that same on-chain pool, not a separate order book.

Every token launched through 4.fun carries built-in bot/sniper resistance for its first few blocks:

• No buys in the launch block — the very block a token is created, no purchases are allowed at all.
• 5-block launch period — for the following 5 blocks, no single wallet can hold more than ~2% of total supply, and purchases sourced from the pool are capped per origin address.

These limits lift automatically after the launch period, and never apply to normal peer-to-peer transfers outside that window.

Every trade pays Uniswap V3's pool fee (a 1% tier). Those fees accumulate in the token's liquidity position and anyone can trigger a collection, which splits the proceeds:

Separately, the Rewards page tracks a points program: every dollar you trade earns points, redeemable for the platform token $4FUN, on top of creator and trader leaderboards.

The Stocks section lists tokenized US equities (e.g. TSLA, AAPL, SPY) trading on Robinhood Chain. Launching a token against one of these works like a normal launch, with one key difference: instead of pairing against ETH, the creator supplies the stock token itself as the quote asset.

That avoids routing an ETH swap through a stock's own liquidity (which may be thin, sit at a different fee tier, or not exist at all) — the pool is seeded directly in the stock, with no intermediate swap or slippage risk. Supply, anti-snipe limits, and the fee split all work the same as a regular ETH-paired launch, only the quote currency changes.

The chat bubble in the bottom-right corner is 4.fun's trading agent. Type a plain-language instruction like "buy 0.02 ETH of PURR" and it resolves the token you mean (meme coin, stock, or an unverified match it flags for confirmation), then executes the swap through your connected wallet.

It supports both buys and partial/full sells by percentage of your holdings, and links every executed trade back to its transaction on the block explorer.

The Bridge page moves ETH from any supported chain into Robinhood Chain, powered by RocketX. Pick a source network, enter an amount, and deposit — RocketX quotes and routes the swap, and funds arrive on Robinhood Chain ready to trade with.

The Leaderboard ranks every token deployed on 4.fun by market cap or trading volume, searchable by name or address.

The Rewards page separately ranks creators (by fees earned) and traders (by volume/points), and is where you track and redeem your points balance.

Campaigns are limited-time community events with their own rewards — check that page for whatever is currently running.

A token's liquidity position is held by the Factory contract itself, which only ever exposes a function to collect trading fees off of it — there is no function to withdraw the underlying liquidity. In practice that means the liquidity backing a launched token can't be pulled out from under it after launch.

As with any on-chain asset, tokens created on 4.fun are permissionless and unaudited by default — anyone can launch one, including on tokens that mimic well-known names. Always verify the contract address before trading, and treat new launches as high risk.

Robinhood Chain, chain ID 4663. Core contracts:

Every token deployed through the Factory or StockFactory shares the same launch mechanics described above. You can verify any individual token's contract, pool, and creator directly on its token page, or on Blockscout.