Stripe subsidiary Privy has partnered with Solana infrastructure firm Jito Labs on a new transaction certainty tool called FullSend, which will help ensure that transactions sent from Privy wallets are included in Solana blocks "as fast as the network allows," according to an announcement shared with The Block.

FullSend was co-developed by Privy and Jito, one of the most prominent Solana infrastructure firms, and has reportedly been running unannounced in production inside Privy since the beginning of the year. Since January, FullSend has achieved 99.999% landing reliability across millions of transactions.

"Transaction landing on Solana became more complicated than it ever needed to be — tips, priority fees, picking the right endpoint. We wanted to make that entire decision disappear for developers,” Privy CTO Asta Li said in the statement.

FullSend works by automatically routing every transaction signed in a Privy wallet directly to the current and upcoming Solana leaders through Jito’s low-latency network. Solana rotates block building leaders roughly every 400 milliseconds per slot, following a predetermined schedule based on stake.

In addition to helping ensure inclusion, the system also bypasses any Maximal Extractable Value (MEV) risks, like bots front-running, sandwiching, or censoring transactions.