Privy and Jito Labs Unveil Fullsend Tool to Accelerate Solana Transactions and Curb MEV Attacks

Privy, a subsidiary of online payments giant Stripe, has quietly partnered with Solana infrastructure provider Jito Labs to launch a tool called Fullsend, designed to significantly boost transaction speeds on the Solana blockchain while mitigating common security risks. The tool, which has been operational since early this year without a formal public announcement, reduces Solana’s transaction latency from approximately 200 milliseconds to just 50 milliseconds, according to a report from The Block.

How Fullsend Works

Fullsend is built on top of Privy’s embedded wallet infrastructure, which automatically generates a cryptocurrency wallet address for users upon login. By integrating with Jito Labs’ Solana infrastructure, the tool optimizes the transaction flow to minimize delays. The reduction in latency is achieved through more efficient transaction processing and validation mechanisms, allowing for near-instant confirmation times.

Beyond speed improvements, Fullsend includes features designed to block Maximal Extractable Value (MEV) risks, such as bot front-running and sandwich attacks. These malicious practices have long plagued blockchain networks, where bots exploit transaction ordering to extract value at the expense of regular users. By incorporating MEV protection directly into the transaction pipeline, Fullsend aims to create a fairer and more secure environment for Solana users.

Context and Strategic Importance

Privy’s role as a Stripe subsidiary gives it significant credibility in the fintech space. Stripe itself has been deepening its involvement in cryptocurrency infrastructure, including the development of Tempo, a stablecoin-focused Layer 1 blockchain, in collaboration with crypto venture capital firm Paradigm. The Fullsend tool represents another step in Stripe’s broader strategy to integrate blockchain capabilities into mainstream financial services.

Solana has long been known for its high throughput and low transaction costs, but network congestion and latency issues have occasionally hampered its performance. Tools like Fullsend address these pain points directly, making the network more viable for high-frequency applications such as decentralized exchanges, gaming, and real-time payments.

What This Means for Solana Users and Developers

For everyday users, the primary benefit is a smoother and faster transaction experience. The reduction from 200ms to 50ms may seem marginal, but in practice, it eliminates noticeable delays, making interactions with dApps feel nearly instantaneous. For developers, Fullsend offers a ready-made solution to improve user experience without requiring extensive custom optimization.

The inclusion of MEV protection is particularly valuable. Front-running and sandwich attacks have been persistent issues on Ethereum and other chains, and Solana is not immune. By baking in these protections, Fullsend reduces the risk for users, especially those engaging in decentralized finance (DeFi) activities.

Conclusion

Privy and Jito Labs’ Fullsend tool marks a practical advancement in Solana infrastructure, addressing both performance and security in a single package. While the tool has been quietly operational for months, its formal recognition signals growing maturity in the Solana ecosystem. As Stripe continues to expand its crypto footprint through initiatives like Tempo, Fullsend underscores the company’s commitment to building reliable, user-friendly blockchain solutions. For Solana users and developers, this tool offers a tangible improvement in speed and safety, reinforcing the network’s position as a leading platform for scalable decentralized applications.

FAQs

Q1: What is Fullsend and who developed it?
Fullsend is a tool co-developed by Privy, a Stripe subsidiary, and Jito Labs, a Solana infrastructure company. It reduces transaction latency on Solana and includes protections against MEV attacks like front-running and sandwich attacks.

Q2: How much does Fullsend improve Solana transaction speed?
Fullsend reduces Solana’s transaction latency from approximately 200 milliseconds to 50 milliseconds, a fourfold improvement.

Q3: What are MEV attacks and how does Fullsend prevent them?
MEV (Maximal Extractable Value) attacks involve bots manipulating transaction ordering to profit at users’ expense. Fullsend includes features that block these attacks, ensuring fairer transaction processing.