Check app heartbeat, workspace, bridge version and scripting opt-in without changing the scene.

Discover installed app tools, actual editor methods, license flags and limitations. Presence is not proof of execution.

Inspect current scene, frame range, selection and object counts.

List open scene tabs with current indices and names.

Activate a scene index returned by list_scenes. Refresh indices before use.

Create a new scene tab. Existing tabs are preserved.

Open a .casc scene from an absolute path inside the workspace.

Save a .casc checkpoint inside the workspace; requires overwrite=true to replace an existing file.

Find objects by name substring and exact type, with stable IDs and pagination.

Inspect body, Point and Box controls, joints and finger controller candidates. Names alone do not establish axes.

Inspect an exact object's behaviours and data channels, including unavailable values. Read before editing properties.

Read local/global transforms at a frame. Rotations include WXYZ quaternions and Euler radians.

Select exact objects for context-sensitive actions. An empty list clears selection.

Move the timeline cursor. Read the returned frame because Cascadeur can clamp it.

Set playback boundaries. This does not allocate animation data or add keyframes.

List animation tracks, locks, visibility, keys and interpolation. Tracks differ from additive animation layers.

Select an explicit track interval before physics, mirror, clipboard or timeline actions.

Add or update keys and allocate animation data on explicit unlocked tracks.

Remove keys from explicit tracks. Frame 0 is protected; save a checkpoint first.

Set outgoing interpolation at existing keys. Verify overshoot and intermediate poses after changing it.

Key body or finger controls in one edit. Position uses scene units, delta rotation uses degrees; rig solving can adjust values.

Author body and finger animation in a batch. Delta rotations reference a pre-edit frame, default 0. Read poses and render to verify.

Edit discovered scalar/vector data channels. Advanced: can change rig/physics behavior. Read get_object first; no guessed names.

Sample global trajectories, path lengths and maximum step distances. Useful for drift/jumps; not an artistic quality score.

Mirror explicit controls at the current frame or selected interval. Requires valid mirror mappings on the rig.

Choose clean mesh review or a rig controller display mode for the active viewport.

Read the active viewport camera for restoring a view after hand/body closeups.

Set the active viewport camera position/target in scene units.

Frame body or finger controls in the viewport for visual inspection.

Render a PNG of the active viewport and return it as an MCP image. Use distinct filenames per pose.

Import an FBX from the workspace. Animation replaces matching rig data; save a checkpoint and inspect skeleton mappings.

Export FBX after checking app license. Verify the exported skeleton, frame range and axes in the receiving app.

List curated menu actions for physics, AutoPosing, retargeting, cycles, playback and visual review, with verification status.

Dispatch a named action from list_actions on an explicitly named scene. Many are toggles or depend on selection/license. Dispatch is not verified success.

Read live Python API member names/signatures/docs without executing methods. Prefer this over guessing from stale stubs.

Inspect a discovered tool/editor and optional public attribute path. Exposes actual signatures for advanced scripts.