Privy and Jito launch FullSend to speed Solana transactions

Stripe-owned Privy and Solana infrastructure firm Jito Labs launched FullSend, a tool that routes transactions signed in Privy wallets directly to current and upcoming Solana block leaders. The partners say FullSend has run in production inside Privy since January 2026 and handled millions of transactions with a reported 99.999% landing reliability.

FullSend delivers each signed transaction straight to Solana leaders over Jito’s low-latency network instead of sending them first to public or hosted RPC nodes for broadcast. Solana rotates block-building leaders roughly every 400 milliseconds per slot. Privy reported FullSend cuts transaction inclusion latency to about 50 milliseconds versus at least 200 milliseconds when using the traditional RPC broadcast path.

The companies say routing directly to leaders reduces exposure to Maximal Extractable Value risks such as front-running, sandwiching and transaction censoring because transactions do not pass through the public mempool where bots can observe them. Asta Li, Privy’s chief technology officer, wrote, “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 and Jito designed FullSend for users that require fast, predictable inclusion, including fintech firms, market makers and institutional participants on Solana. Privy, acquired by Stripe in 2025, lists customers including Klarna, Ramp, Deel and Hyperliquid, and reports about 140 million accounts that process billions of dollars in monthly volume. Earlier in 2026 Privy announced a partnership with Alchemy to support institutional onboarding.

Jito Labs supplies the low-latency network that enables direct leader delivery. Lucas Bruder, Jito’s chief executive, added, “The best applications on Solana win or lose on how fast and reliably their transactions land — that's the whole game. FullSend is our answer at the infrastructure layer: straight to the leader, standard priority fees, MEV protection by default.”

The technical change replaces the common flow in which wallets submit transactions to an RPC node that then broadcasts them to the network. That broadcast step can introduce delays and expose transactions to mempool-based trading bots. Privy and Jito say FullSend aims to place transactions in front of leaders “before the competition,” improving speed and predictability for the transactions it handles. Stripe is also working on other blockchain projects, including co-developing the stablecoin-focused Layer 1 blockchain Tempo.