> ## Documentation Index
> Fetch the complete documentation index at: https://www.runmirrors.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Config and overrides

Config is immutable versions per mirror. A change is the next version with who applied it, why, and its review state; a person's change is approved at once, an agent's waits for review (improve\_review\_list, improve\_review\_decide). Revert copies an older version forward.

Knobs: simModel (the simulation model, from the allow list), synthesis (whether the build may synthesize implementations), inventionVolume (rows per entity the build may invent; 0 keeps recorded data only).

Per-tool overrides, the levers drift names: pinRung (answer from a fixed rung: provided, custom, workspace, sink, world, synthesized, simulated), editOperation (the world operation behind the tool), editTemplate (the response template as a JSONata expression), customImplementation (JavaScript that answers the tool), addExamples (recorded examples), describeBehavior (a rule in words the simulator honours), ignore.

World overrides: renameEntity, addField, removeField, setLifecycle, addTransition, replaceTransition, addGuard, addInvariant, addRelation, note.

Scenarios: named seed specs (rows per entity, files, a clock) a session opens with; seed instructions in words seed a session on the fly.

Every override is a build input: request a build (mirrors\_builds\_request) for it to take effect; the twin restarts onto the new build when it activates.

This page is also the MCP resource an IDE agent reads; generated by `pnpm docs:generate`.