If you are sending transactions to the public mempool in 2026, you are not trading—you are feeding the sharks. This guide explains why Private Bundles (Flashbots) have become the only viable way to execute MEV strategies safely.
Public Mempool (The Dark Forest)
- ❌ Sandwiched: Bots see your tx and front-run it.
- ❌ Gas Wars: You pay for failed transactions.
- ❌ No Privacy: Your strategy is exposed to copycats.
Flashbots Bundles (The Private Line)
- ✅ Invisible: Miners see it only after it's mined.
- ✅ No Reverts: You only pay if your tx succeeds.
- ✅ Atomic: All or nothing execution.
Visualizing the Difference
Figure 1: Public transactions are visible to predator bots. Flashbots bundles bypass the mempool entirely.
How FRB Protects You
The FRB Agent comes pre-configured with the latest Flashbots relays. Meaning, you don't need to write custom code to get this protection. It's built-in.
- Auto-Switching: If Flashbots is down, we route to other private relays (like Titan or BloXroute) automatically.
- Simulation First: We simulate your bundle against the current block state. If it fails simulation, we don't broadcast it—saving you gas fees.
Stop Leaking Profit
Join thousands of searchers who have switched to private execution. Download FRB today and trade with the "Invisibility Cloak" enabled.