Privy and Jito Launch FullSend to Bypass Solana Transaction Routing

Privy, the wallet infrastructure company owned by Stripe, and Jito Labs have jointly launched FullSend, a tool that routes transactions directly to Solana's current block-building leader, bypassing the network's standard transaction routing. The move aims to improve transaction reliability on a blockchain historically plagued by congestion and outages, but it's already drawing scrutiny from developers concerned about centralization risks.

FullSend works by automatically directing every transaction signed in a Privy wallet straight to whichever validator is currently building the next block on Solana. Rather than broadcasting transactions to the broader network where they compete for inclusion, this direct routing model prioritizes speed and certainty of inclusion. For users, that translates to faster confirmation times and reduced risk of transaction failure due to network congestion.

The partnership makes strategic sense. Jito Labs operates Solana's dominant MEV (maximal extractable value) infrastructure, controlling the block-building process for a substantial portion of the network's validators. Privy, with millions of users through Stripe's developer network, brings significant transaction volume to the table. Together, they're creating a fast lane for Privy users by funneling their transactions directly into Jito's block-building pipeline.

But this efficiency comes with a structural cost. By concentrating transaction routing through a single entity's block-building infrastructure, FullSend creates a two-tiered transaction experience on Solana. Users outside the Privy ecosystem continue to rely on standard routing, while Privy users get preferential treatment. This fragmentation mirrors concerns that plagued Ethereum's MEV infrastructure, where specialized routing solutions like MEV-Boost raised alarms about centralization of transaction ordering power.

The centralization risk cuts deeper. Solana validators already operate with less redundancy than other major blockchains. Concentrating transaction flow through a single block-building leader increases the network's dependency on that entity's uptime and honesty. If Jito's infrastructure experiences downtime or a validator acting as the block-building leader goes offline, Privy users could face sudden transaction failures. A malicious block-building leader gains more leverage over transaction ordering and potential MEV extraction.

The tool may primarily benefit Privy and Jito while creating infrastructure fragmentation. The concern isn't unfounded. If FullSend gains traction and other wallet providers adopt similar direct-routing strategies, Solana risks fragmenting into multiple competing transaction pipelines, each optimized for different validator sets. That defeats the purpose of a unified blockchain network and could undermine the security guarantees that emerge from transaction diversity.

Solana's history makes these concerns urgent. The network has suffered multiple outages since 2021, including a 17-hour downtime in 2022 caused by validator resource exhaustion. Each incident revealed how network-level problems cascade when validators are under stress. Adding another layer of infrastructure concentration doesn't solve the underlying fragility, it compounds it.

For Solana's developer community, the real question is whether FullSend represents a pragmatic fix to a broken transaction experience or a step toward a more fragmented, less resilient network. The tool addresses a genuine problem: Solana's standard routing has been unreliable. But the solution concentrates power rather than distributing it, which runs counter to blockchain principles and Solana's own long-term interests. If every major wallet provider launches its own transaction routing layer, Solana becomes less a unified network and more a collection of siloed transaction pipelines, each optimized for different stakeholders.