Launching

• Call createLaunch(manifest, legIndex, relays[], devBuyQuote, devBuyMinOut) on the home chain, from manifest.creator. legIndex is the leg that lives on this chain.
• Each RelaySpec is {legIndex, options} for a remote leg; options are LayerZero executor options, use lzReceiveOptions(RELAY_LEG_GAS) from the shared package. The remote quote must be allow-listed on the home chain (remoteQuoteAllowed).
• msg.value must equal exactly creationFee × (1 + relays.length) + Σ relay.quoteLeg(...), plus devBuyQuote when the local quote is native. Read creationFee from the launchpad and quote every relay first; the launchpad reverts with BadValue otherwise.
• ERC20 quote: approve the launchpad for devBuyQuote before the call. Remote legs open a few seconds later once the LayerZero message lands; LegRelayed then LegCreated on the peer chain tell you when.
• Unsupported chain on the relay? Send the same manifest with createLaunch(manifest, legIndex, [], 0, 0) directly on that chain, from the same creator. Same hash, same token address.

crossr.app/launch

crossrExploreLaunchPortfolioHow it works

Launch fees3 × creationFee

MessagingΣ relay.quoteLeg(i)

Dev buydevBuyQuote

msg.value= sum of the above

Launch on 3 chains