Architecture

Plexus is a platform, not a single tool. A clean separation runs through everything: the open framework that anyone can read and build on, and the closed intelligence that is the product.

The open on-ramp, the premium engine

flowchart TB
  subgraph OPEN["🟢 Open · plexuslabs.dev — free, transparent, trust"]
    PR[plexus-protocol] --> BUS["plexus-bus<br/>rust · python · dotnet"]
    BUS --> NTC[plexus-nt<br/>NinjaTrader connector]
    BUS --> PLG[PrismR Python plugins]
  end
  subgraph CLOSED["🔴 Premium · plexustraders.com — the Axon models"]
    ML[ml-shared<br/>feature pipelines] --> STR[trained strategies] --> AX[Axon<br/>headless ML client]
  end
  PLG -.->|"want proven edge?"| CLOSED

Everything connects through the open bus contract, with PRISM as the brain at the center — every trade client branches from it. You can build, connect, and verify entirely on the open side. The premium, sealed Axon engine — our proprietary headless trade client with a built-in ML engine — is the defensible moat, and lives behind PlexusTraders.com.

What's open vs. premium

Layer	Open (free)	Premium
Protocol	plexus-protocol — the wire spec + conformance	—
Bus	plexus-bus (Rust / Python / .NET)	—
Connectors	plexus-nt (NinjaTrader)	—
Monitor	PrismR — free binary + Python plugin API	PrismR Pro
Engine	bring-your-own plugin logic	Axon — sealed, ML-trained models

Platform-agnostic by design

NinjaTrader is the first window, not the only one. The same engine is built to reach MetaTrader / CFDs, other trade clients, and direct API access. Each new platform is the same intelligence arriving in a brand-new market — another arm of the octopus.

flowchart LR
  M["Market data"] --> P["PRISM · the brain"]
  P -->|Plexus Bus| NT["NinjaTrader ✅"]
  P --> MT["MetaTrader"]
  P --> QT["QuantTower"]
  P --> API["Direct API / CFDs"]
  P --> AX["Axon · our headless ML client"]

From Python to Rust

We perfected the platform in-house on a Python stack — the PRISM coordinator plus the Ammonita engine — and that's what we trade on today. The Rust rewrite (PRISM + the sealed Axon engine) is the next level: roughly 10× the throughput, with the low latency high-frequency order-flow trading demands.

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Explore the open repositories → every component above has its own repo and wiki, listed on the Community page.