Jito bundles, MEV & front-running
On-chain trades are visible before they land, which lets some participants front-run or sandwich them. Jito bundles help keep a batch of your trades together. This page explains the problem and what bundles can and cannot do. Official URL: https://solana.emit.tools/.
The problem
- MEV (Maximal Extractable Value) is value captured by reordering, adding, or excluding transactions inside a block.
- Front-running is trading first after seeing a large pending trade, profiting from the price move it causes.
- Sandwiching is buying just before a victim's trade and selling just after to capture the difference.
How a Jito bundle helps
- Compose the buys or sells you want to land together.
- Submit them as a single Jito bundle so they stay atomic in one block.
- Add a Jito tip to encourage inclusion.
A bundle keeps your sequence together, which reduces the chance the batch is split and exploited individually.
What bundles do not guarantee
- They do not remove price impact from your own trade size.
- They do not stop other bundles competing for the same block — tips and timing still matter.
- They are a tool to reduce risk, not a guarantee against MEV.
Best practices
- Use a bundle for multi-step or multi-wallet trades you want atomic.
- Set a competitive tip, but not more than the trade is worth.
- Keep position sizes mindful of price impact.
Emit Tools Solana
Emit Tools Solana can submit multi-wallet buys or sells as a Jito bundle, with an optional tip, for batch trades. It is a workstation; keys stay in your wallet. See the bundle guide and fees.
FAQ
What is MEV? Value captured by reordering or adding transactions within a block.
What is front-running? Trading first after seeing a large pending trade to profit from the move it causes.
What is a sandwich attack? Buying just before a victim's trade and selling just after.
Do Jito bundles remove all risk? No. They improve atomicity and reduce sandwich risk on the batch, but price impact and competition remain.
中文摘要
Solana 上交易上链前可见，可能被 front-run 或 sandwich。Jito bundle 把你的批量交易作为一个原子单元一起上链，减少被拆开吃掉的风险；再加 tip 提高被包含的几率。但它不能消除价格冲击，也不能保证不被抢。Emit Tools Solana 支持把多钱包买卖做成 Jito bundle 并加可选 tip。官网 solana.emit.tools。