Tool reference

The assistant works by calling typed tools against the live scene. This is the complete list, grouped the way the registry groups it.

Knowing the names is useful: naming the operation you want in a prompt tends to get you a cleaner plan.

On the generative path the model does not choose these directly — it casts techniques, and the deterministic libraries emit the tool calls. The direct tool loop calls them straight, for trivial edits. Either way, a whole run applies as one undo step.

Read (7)

Tool	Purpose
`describe_scene`	Read the current scene structure
`get_selection`	What is selected
`list_assets`	Available media
`list_capabilities`	What the app can do
`list_presets`	Available animation presets
`read_tracks`	Existing keyframe tracks on a property
`evaluate_at`	Sample a property’s value at a time

Write (25)

Layers and structure

create_layer · create_media · create_media_from_attachment · create_precomp · create_mask · update_layer · delete_layer · reparent_layer · update_composition · define_style

Animation

set_keyframes · remove_keyframes · set_easing · set_expression · apply_preset · stagger_in · text_animator · set_time_remap · set_spring

Effects and look

add_effect · update_effect · update_effect_param · apply_layer_style · set_shadow_stack · set_motion_blur

set_spring is worth knowing about — it produces spring-driven motion rather than a Bézier ease, which is what makes generated motion settle rather than simply stop.

Compose (13)

Higher-level constructs. These are what the caster’s libraries emit.

Tool	Builds
`add_scene`	A whole scene block
`add_background`	A background treatment
`add_title`	A title
`add_kinetic_title`	A title with per-glyph motion
`add_lower_third`	A lower third
`add_cards`	A set of cards
`add_emblem`	An emblem or badge
`add_logo_reveal`	A logo reveal
`add_ambient_orbs`	Ambient background elements
`add_light_sweep`	A sweep of light across the frame
`add_radial_burst`	A radial burst
`add_surface_treatment`	A surface / material treatment
`add_camera_move`	A camera move

Craft (17)

Shapes, paths, media, rigging and the generative extras.

Shapes and paths

add_repeater · add_path_operator · add_path_morph · merge_paths · set_trim_path · set_text_on_path · create_gradient

Media

import_svg · generate_image · recolor_lottie_vector · analyse_audio · add_transition

3D and light

set_light

Rigging

create_puppet_rig · create_skeleton_rig · pose_skeleton · set_puppet_pin_keyframes

analyse_audio reads an audio layer’s amplitude, which is how the assistant can cut and accent to a track rather than to arbitrary timings. generate_image produces artwork; import_svg brings vector artwork in as editable layers.

What the assistant is — the caster architecture
Prompting it well