Get information about the currently open MOHO document (name, path, dimensions, frame range, FPS)

Get a list of all top-level layers in the current MOHO document

Get detailed properties of a specific layer (type, visibility, transform, etc.)

Get child layers of a group layer

Get all bones in a bone layer

Get detailed properties of a specific bone (position, angle, scale, parent, etc.)

Get keyframe data for a specific animation channel on a layer

Get the full animation state of a layer at a specific frame

Get all mesh points (vertices) in a vector layer

Get all shapes (filled regions) in a vector layer

Set the transform (angle, position, scale) of a bone at a specific frame. Creates keyframes automatically. All transform params (angle, posX, posY, scale) are optional — only supplied values are changed.

Select a bone in the MOHO UI (deselects all others first)

Set a keyframe value on an animation channel. For vec2 channels (translation, scale), pass value as {x, y}. For scalar channels (rotation, opacity, shear), pass a number.

Delete a keyframe from an animation channel at a specific frame

Set the interpolation/easing mode on an existing keyframe (linear, smooth, ease_in, ease_out, step)

Navigate to a specific frame on the MOHO timeline

Set the transform (translation, rotation, scale) of a layer at a specific frame. All transform params are optional — only supplied values are changed.

Show or hide a layer in the MOHO scene

Set the opacity/transparency of a layer at a specific frame (0.0 = fully transparent, 1.0 = fully opaque)

Rename a layer in the MOHO scene

Select a layer in the MOHO UI

Render the MOHO scene or capture the full application window and return as an image. Use mode "scene" (default) for a clean rendered frame, or "full" for the entire MOHO UI including timeline, layers panel, etc.

Click at (x, y) coordinates relative to the MOHO window top-left. Use with document_screenshot(mode='full') to identify UI element positions, then click them.

Drag from (startX, startY) to (endX, endY) relative to the MOHO window. Useful for dragging timeline playhead, sliders, or drawing operations.

Send a keyboard shortcut to the MOHO window. Supports modifiers (ctrl, shift, alt) combined with keys. Examples: "ctrl+z" (undo), "ctrl+shift+z" (redo), "space" (play/pause), "delete", "ctrl+s" (save), "f5".

Execute multiple MOHO operations in a single IPC round-trip (~300ms total) instead of one round-trip per call (~300ms each). PREFER THIS over individual calls whenever you have 2+ operations.

Method names use DOT notation: "bone.setTransform", "layer.getProperties", "animation.setKeyframe", etc. Params match each tool's schema exactly.

Supports all methods EXCEPT: document.screenshot (too slow), batch.execute (no nesting).

Common patterns:

• Multi-frame animation: batch bone.setTransform across frames 1,5,10,15,...

• Bulk reads: batch document.getInfo + document.getLayers + layer.getProperties for several layers

• Keyframe + easing: batch animation.setKeyframe then animation.setInterpolation for each

• Multi-bone pose: batch bone.setTransform for each bone in a skeleton at the same frame

• Layer setup: batch layer.setName + layer.setVisibility + layer.setOpacity

Returns { results: [{ success, index, result|error }], summary: { total, executed, succeeded, failed, stoppedEarly } }. Use stopOnError: true when later operations depend on earlier ones succeeding.