calc-generator

An LM Studio Generator plugin example. A Generator replaces the local LLM as the token source — instead of a model producing the assistant reply, your code does (context.withGenerator).

Part of lmstudio-suite.

What it does

This example acts as a deterministic calculator: it reads the last user message, evaluates it as arithmetic (reusing the suite's evalArithmetic — + - * / % ^, parentheses, no eval), and streams the answer back fragment by fragment via fragmentGenerated.

you:  (3 + 4) * 2 ^ 3
calc: (3 + 4) * 2 ^ 3 = 56

Anything that isn't arithmetic gets a one-line explanation instead.

Why it's here

It's the minimal, runnable template for the Generator hook. The interesting line is context.withGenerator(generate); generate(ctl, history) pulls the last user turn and calls ctl.fragmentGenerated(...). Swap respondTo for any token source — a rules engine, a remote API, a retrieval-only responder — and you have a non-LLM "model" that plugs into LM Studio's chat UI.

MIT licensed.