mm

A headless, exchange-agnostic market-making engine for Rust.

Exchange connectivity lives at the edges. The quoting logic is a pure, deterministic pipeline. The same engine runs live, on paper, and in backtests — only the exchange changes.

Get Started → · Why mm · GitHub

cargo add mm --features backtest,avellaneda

use mm::core::EngineBuilder;
use mm::models::Symbol;
 
let mut engine = EngineBuilder::new()
    .exchange(Box::new(exchange))   // live adapter, replay, or simulator
    .symbols(vec![Symbol::new("BTC-USDT")])
    .strategy(Box::new(strategy))   // compose the quoting pipeline
    .risk(Box::new(risk_stack))
    .planner(planner)
    .build()?;
 
engine.run().await?;

Highlights

• Deterministic & testable — the pipeline has no IO and no clocks.
• Backtest = Live — identical strategy code, only the exchange is swapped.
• Composable — mix fair-price, spread, inventory, and quote models.
• Lean — optional models and adapters are cargo features; compile only what you use.
• Async engine — event-loop core over tokio, pure synchronous pipeline.
• Typed errors — libraries expose thiserror types, not stringly errors.

Features