Minibuilder: Flash

Conceptually, the Flash Minibuilder sits between the Searcher and the Relay. In the traditional PBS model, a searcher sends a bundle to a builder, hoping it gets included. In the minibuilder model, the searcher is the builder, or the minibuilder is a custom API endpoint specifically for that searcher’s optimized code.

No technology is without downsides. Critics of Flash Minibuilders raise three significant concerns: flash minibuilder

: Great for graphics and animation, but poor for heavy coding. Adobe Flash Builder No technology is without downsides

Relays (like bloXroute or Flashbots Relay) must now validate thousands of minibuilder payloads per slot. While a minibuilder is fast, a malicious one could spam the relay with invalid headers, causing denial-of-service. While a minibuilder is fast, a malicious one

By operating via private minibuilders, these "socially useful" MEV strategies avoid the messy public mempool where sandwich bots lurk.