Jito's Maker Priority Plugin Goes Live on Solana Exchange Archer
Jito's first BAM plugin is in use on Archer: market-maker transactions get deterministic priority — for tighter spreads and deeper liquidity in on-chain trading.
What Happened
Jito reported that its Maker Priority Plugin (MPP) is live on Archer — a spot exchange on Solana built on Jito’s infrastructure. The MPP is the first plugin for Jito’s Block Assembly Marketplace (BAM), the layer for programmable block construction on Solana.
What the Maker Priority Plugin Does
The problem it addresses: market makers on on-chain exchanges constantly risk being picked off by faster traders (“toxic flow”). To protect themselves, they quote wider spreads — which means worse prices for all users.
The MPP tackles this, per Jito’s technical introduction of the plugin:
- Dedicated channel: maker transactions run through a dedicated TPU port and are placed ahead of general transaction flow in regular intervals (50-millisecond batches) — regardless of competing fee bids.
- Quote deduplication: only the most recent quote update per market is scheduled; stale quotes are dropped.
- Goal: tighter spreads, deeper liquidity, and more efficient blocks — because market makers need to price in less of a safety buffer.
Context
With the go-live on Archer, the plugin gets its practical deployment on a trading venue. It is one building block in Jito’s broader BAM roadmap — most recently, Jito reported that more than half of validators run BAM (self-reported). For end users, the expected effect is indirect: better prices through tighter spreads, not a new interface.
What to Watch
- Whether measurably tighter spreads and deeper order books show up on Archer
- Which other exchanges or AMMs adopt the MPP
- Which further BAM plugins follow
Sources
- Jito — @jito_sol on X · Technical introduction of the Maker Priority Plugin
- BAM — bam.dev
- SOLANA·HUB news: Jito FireBAM on Frankendancer · Jito: majority of validators run BAM