Guide

Launch protection

The first-buy cap and the anti-snipe window.

Tokens from the current factory (0x09A8…3F60) have two protections. Tokens from older factories do not.

First-buy cap#

The first swap on a curve can take at most 5% of supply: 50,000,000 tokens. In practice this is the creator's buy inside the launch transaction.

The factory rejects a launch whose minimum output is above 50M tokens.
The hook checks the exact output of the first swap. A low slippage setting cannot get around it.
A launch that breaks the cap reverts with FirstBuyTooLarge. Nothing is created.

Later buys have no per-wallet cap.

The launch form shows the maximum for your pair and tax. It uses this formula:

maxFirstBuy = virtualQuote * 10000 / (19 * (10000 - taxBps))

Call the launch block L. The launch transaction creates the pool and runs the creator's buy in block L, before anyone else can trade.

A sniper's buy in the window does not get a worse price. It fails, and the sniper gets nothing.

While the window is active, the token page shows Anti-snipe active with the block where buys open. Explore cards show Opening.

Hook function	Returns
`launchBlock(token)`	The launch block. 0 for older tokens.
`marketOpenBlock(token)`	The first block where buys work (`L+3`). 0 for older tokens.
`antisnipeActive(token)`	`true` during `L+1` and `L+2`.
`MAX_FIRST_BUY_TOKENS()`	`50000000e18`
`ANTISNIPE_BLOCKS()`	`2`

antisnipeActive reads the latest block. Your transaction lands in the next one. Treat the market as open when latestBlock + 1 >= marketOpenBlock.