Privy, the crypto wallet infrastructure company acquired by Stripe in 2025, has launched a new transaction routing system called FullSend together with Solana infrastructure provider Jito Labs. The system aims to include transactions in blocks faster and more reliably on the Solana network.
Transmits transactions directly to block producers
According to the information provided by the companies, FullSend has been quietly used in Privy wallets since the beginning of the year. During this process, the system achieved a successful transaction inclusion rate of 99.999 percent across millions of transactions.
FullSend transmits transactions signed via Privy wallets directly to Solana’s current and next block leaders via Jito’s low-latency network. Since block producers change approximately every 400 milliseconds in Solana, it is critical that the transaction reaches the right validator at the right moment.
In the traditional method, transactions are often spread across the network via public or hosted RPC nodes. FullSend, on the other hand, eliminates this intermediary layer and sends transactions directly to block leaders. The companies stated that, in this way, the transaction inclusion delay decreased to approximately 50 milliseconds, while in classical routing methods, this time could increase to 200 milliseconds or more.
Mini dictionary: An RPC node is the technical access point that allows wallets and applications to communicate with the blockchain network. MEV, on the other hand, refers to strategies that try to generate additional income from transactions seen before block production; This may include pre-processing and changing the order.
Aims to reduce complexity for developers
Privy Chief Technology Officer Asta Li said the main goal of the system is to reduce the complexity developers face when choosing between priority fees, additional incentive payments and network endpoints.
Privy management emphasized that they aim to ease the burden on developers of balancing priority fees, additional incentives and network connections, and that FullSend makes this process simpler.
Jito Labs also stated that its infrastructure directly delivers transactions to the validators responsible for producing the next blocks. It was stated that this structure helps users face less risk against bots targeting pending transactions while maintaining standard priority fees.
Emphasis on protection against MEV attacks
The companies argued that FullSend also offers additional protection against common MEV attacks. These include front-running, sandwich attacks, and transaction censorship. The emphasis on speed and accuracy in Solana-based applications makes such protections more important at the infrastructure level.
Jito Labs Senior Manager Lucas Bruder stated that processing speed and reliability have become the basic needs for applications developed on Solana. Bruder noted that FullSend offers built-in MEV protection while providing direct routing to block leaders.
Stripe’s expansion into crypto infrastructure continues
This step stands out as the latest link in Stripe’s growing presence in the crypto infrastructure. Payment technologies company Stripe acquired Privy in 2025. Privy also announced a partnership with Alchemy earlier this year to onboard enterprise users.
Privy says its infrastructure is also used by fintech companies such as Klarna, Ramp and Deel, as well as crypto trading platform Hyperliquid. The company states that its technology is used by more than 140 million accounts and supports billions of dollars in monthly transaction volume. Stripe is also expanding its investments in blockchain-based payment infrastructure by working on Tempo, a stablecoin-focused Layer 1 blockchain.
