API reference

Generated from the built .d.mts of every published package — the same files npm ships — so this reference always matches the current release.

Every package is ESM-only and needs Node 22.13 or newer. Capability packages (terrain, worldgen, figures) have no . export: import /kernel for simulation-side code and /client for the three.js side.

Package	What it is	Entry points
@bendyline/molen-kernel	Molen headless deterministic simulation kernel (no DOM, no three.js)	. · ./aircraft · ./character · ./content · ./determinism · ./kinematics · ./platformer · ./scripting · ./terrain · ./testing · ./vehicles · ./world
@bendyline/molen-client	Molen rendering client: three.js wrapper, snapshot sync, interpolation	. · ./aircraft · ./audio · ./camera-track · ./markers · ./navigation · ./vehicles · ./vite
@bendyline/molen-schema	Molen data formats: schemas, validator, and error formatter	.
@bendyline/molen-tooling	Molen agent tooling: molen CLI and MCP server over a shared ops library	.
@bendyline/molen-terrain	Molen terrain capability: heightfield sampling (kernel) and chunked LOD meshing (client)	./kernel · ./client
@bendyline/molen-worldgen	Molen worldgen capability: data-driven buildings from outlines and prop placement in labeled polygons (kernel) with three.js uploads (client)	./kernel · ./client
@bendyline/molen-worldgen-earth	Earth binding for Molen worldgen: terrain-semantics adapter, OSM label mapping, and lon/lat region atlas (kernel) with terrain tile renderers (client)	./kernel · ./client · ./worker
@bendyline/molen-earth	Molen Earth view: an embeddable real-world 3D view (streamed terrain, worldgen buildings, orbit/walk/drive navigation, vehicles, and map markers) behind one mountEarthView call
@bendyline/molen-figures	Molen figures capability: stylized human, biped and quadruped rigs, gaits and sockets (kernel) with procedural skinned bodies (client)	./kernel · ./client
@bendyline/molen-ambient	Molen ambient-life capability: transport networks built from roads, rail and paths, with lane-following NPC cars, trains, aircraft and pedestrians spawned around an observer (kernel) and instanced rendering (client)	./kernel · ./client
@bendyline/molen-materials	Molen materials: pixel grids, SVG and procedural material graphs (rungs 2-4). No three.js.	.
@bendyline/molen-pack	Molen content packs: build, open and read zip packs of models and documents from any source	. · ./cache · ./node
@bendyline/molen-pathfinding	Molen pathfinding: grid flow fields for many-unit (RTS) movement	.
@bendyline/molen-physics-rapier	Molen opt-in Rapier rigid-body physics: body<->ECS mirroring, hybrid snapshot	.
@bendyline/molen-entities	Molen entity library: ids and helpers for the molen.entities content pack (trees, rocks, aircraft, vehicles)	.
@bendyline/molen-input-react	Molen optional React controls for editing keyboard and joystick profiles	.

Where to start

• @bendyline/molen-kernel — buildWorld, the ECS World, commands, and the deterministic scheduler.
• @bendyline/molen-client — mountExperience and the three.js renderer.
• @bendyline/molen-schema — the format registry, validator, and component vocabulary.
• @bendyline/molen-tooling — every CLI/MCP operation as a plain (input) => output function.