Lottie Creator

Ask an agent to

• List the scenes in my Lottie project
• Show the inputs on the active state machine
• Change the fill color of a layer in my animation

16 tools

• discover_toolsread-only

  Discover full TypeScript signatures for additional sandbox APIs before using them inside execute_typescript. Discoverable tools: [external_read_scene, external_apply_keyframes, external_apply_motion_preset…

  toolNames: array

• execute_typescriptuntrusted content

  Execute TypeScript in an isolated QuickJS sandbox to edit Creator. First use discover_tools for typed external_<tool_name> functions. Await every external_* call; calls are serialized. Return a JSON-serializable…

  typescriptCode: string

• list_fontsread-onlyuntrusted content

  List font families available in the active project — Creator's curated presets, Google Fonts, OS-installed local fonts (when permission has been granted), and project-uploaded font assets. Use this when the user names…

  source: string?

• list_inputsread-onlyuntrusted content

  List the typed inputs (variables) on the active state machine. Inputs are how state machines store runtime values — booleans for toggle state, numerics for progress / counters, strings for labels, and events for…

• list_interactionsread-onlyuntrusted content

  List the interactions defined on the active state machine. Interactions BIND runtime pointer / state events to actions — usually a `Fire` action that emits a named event a transition listens for. **Without an…

• list_layer_effectsread-onlyuntrusted content

  Return the effects currently attached to a layer, with their ids, types, and enabled state. Call this before stacking another effect, before removing one, or whenever you need to know what's already there.

  layer_id: string

• list_motion_system_itemsread-onlyuntrusted content

  Read the user's Motion System library — a separate design library from the file's theme slots. Returns colors / gradients / fonts / easings / durations / motion presets that the user has saved (typically synced from…

  type: string?

• list_scenesread-onlyuntrusted content

  List every scene in the current project plus which one is active. Cheap read. Use when the user refers to scenes by name ('switch to the outro', 'work on the vertical') so you can find the right `scene_id`, or when…

• list_segmentsread-onlyuntrusted content

  List the named animation segments (markers) on the active scene. Each segment is a name + a frame range (start_frame, end_frame). Segments are used by Lottie players to loop / play named ranges and by dotLottie state…

• list_slotsread-onlyuntrusted content

  List design-token slots defined in the file. Each slot has ONE stable id (e.g. 'brand-red') but can supply different VALUES per theme — Default theme might have brand-red as crimson, a Dark theme might have it as…

  type: string?, theme_id: string?

• list_state_machinesread-onlyuntrusted content

  List the interactivity state machines defined in this file. Each one is `{ id, name, state_count, transition_count, is_active }`. Returns the active state machine id separately as `active_state_machine_id`. State…

• list_statesread-onlyuntrusted content

  List the states in the active state machine. Each is `{ id, name, type, segment, autoplay, loop, mode, is_initial, transitions: [{ id, to_state_id, trigger?, type }] }`. Returns `state_machine_id` and…

• list_themesread-onlyuntrusted content

  List the themes embedded in this file. Themes group design-token slots (brand colors, named text strings, etc.). The Default theme is always present; users can add named alternates (e.g. 'Dark', 'Holiday'). Returns `{…

• measure_text_unitsread-onlyuntrusted content

  Return per-line, per-word, and per-character bounds for an existing text layer. Uses the same canvas.measureText pipeline that powers `read_scene`'s `measured_bounds`, but exposes the cumulative pen position per glyph…

  layer_id: string, granularity: string?

• read_keyframesread-onlyuntrusted content

  Read the current keyframes on a layer's keyframe-tool properties. Use this whenever the user asks to TUNE, POLISH, or MODIFY an existing animation ('make the bounce snappier', 'slow down the fade', 'shift this 10…

  layer_id: string, property: string?

• read_sceneread-onlyuntrusted content

  Read the current Creator scene. Returns scene dimensions, framerate, duration, all layers, current selection, render order, visual bounds, scene-center deltas, and clipping/off-canvas flags. Call this once at the…