Query instances in the Roblox place. Prefer a typed action over execute_luau. Actions: get, children, descendants, ancestors, find_child, find_descendant, wait_for_child, search_class, search_name, search_property, search_tag, class_info, file_tree (nested outline), project_structure (service/script counts). Paths: 'game.Workspace.Model.Part' or 'Workspace/Model/Part'. Prefer rbId (from a prior summary) over path when both are set — names like Part are not unique. Aliases: childName/descendantName/query→name, root→path, propertyName→property, id→rbId.

Create, delete, clone, move, rename, or pivot instances. Also: create_with_props (create+properties), create_tree (nested hierarchy in one waypoint), mass_create, mass_delete, mass_duplicate, smart_duplicate (N copies with offset), scatter (ray-snap clones onto ground in a region). Property values: numbers/strings/booleans, Vector3 [x,y,z], CFrame [x,y,z] or 12 numbers, Color3 hex '#ff0000' or [r,g,b] 0-1, UDim2 [xs,xo,ys,yo], enum strings like 'Enum.Material.Neon'.

Get/set properties, attributes and tags. Actions: get, get_all, set (property + value), set_many/set_multiple (properties map — also used if you pass action 'set' with a properties map and no property), get_attributes/get_attr/get_all_attrs, set_attribute/set_attr, delete_attr, get_tags, add_tag, remove_tag, check_tag, get_tagged, set_relative (add/subtract/multiply/divide via operation, or plain delta), set_calculated (evaluate a math expression with variables that may be values or instance property paths), mass_set, mass_get, modify_children (set props on matching children).

Work with Script/LocalScript/ModuleScript sources. Actions: get_source, set_source, create, delete, list, search, replace (substring across scripts), edit_lines, edit_replace (find/replace in one script), edit_insert (insert at line), edit_delete (delete line range), validate (loadstring syntax check of a script path or raw source), get_dependencies (require() targets and services a script references). Prefer these over execute_luau for script edits.

Inspect or change Lighting and environment. Actions: get, set/lighting (Lighting properties), set_time/time (clockTime 0-24 or time 'HH:MM:SS'), atmosphere (get/set Atmosphere, createIfMissing), sky, terrain_props (Terrain water/visuals), mood (preset: day/night/sunset/foggy/horror plus optional overrides), add_effect, clear_effects. Do not invent skybox asset IDs.

Control the Studio viewport camera. Actions: get/info, set, focus/focus_path, focus_position (look at a world point), suggest (recommended views for a target or the selection — does not move the camera), zoom_extents, screenshot, record, record_stop. screenshot captures the Edit-mode viewport via Roblox CaptureService (works even if Studio is in the background). record captures a short viewport clip (CaptureService frame burst → Node stitch). CaptureService allows only one in-flight shot and typically lands around 1.5–2 fps; that cap is expected. record_stop aborts an in-flight recording. Requires File → Game Settings → Security → Allow Mesh / Image APIs.

Add visual effects to parts. Actions: create (ParticleEmitter, Fire, Smoke, Sparkles, Trail, Beam, PointLight, SpotLight, SurfaceLight, Highlight), remove/clear, list, emit (ParticleEmitter:Emit), toggle (Enabled).

Physics helpers. Actions: anchor / unanchor, set_collide, weld, get_mass, set_physical_properties, create_constraint, register_group, set_collidable, get_groups (PhysicsService collision groups).

Edit Terrain. Actions: fill_block, fill_ball, fill_cylinder, fill_wedge, clear, clear_region (center+size or region {min,max}), clear_bounds (min+max), replace_material (fromMaterial→material), colors_get / colors_set (per-material terrain colors), read_voxel (position), read_voxels / write_voxels (bulk region voxels), generate (procedural fBm terrain with presets mountains/hills/plains/dunes/islands/canyon), smooth (blur occupancy in a region), get_info. Regions: {min:[x,y,z], max:[x,y,z]}. Materials: Grass, Sand, Rock, Water, Snow, Mud, Asphalt, Basalt, Brick, Cobblestone, Concrete, CrackedLava, Glacier, Ground, Ice, LeafyGrass, Limestone, Pavement, Salt, Sandstone, Slate, WoodPlanks.

Spatial queries in workspace. Actions: raycast (filterList/filterType/ignoreWater), multi_raycast (rays[], max 50), in_radius, in_box, ground_height/find_ground (position or x/z), check_placement (is a box placeable at position), scan_area (heightmap grid), find_flat (flat build spots), find_spawn (clear spawn positions), analyze_walkable (walkability grid), spatial_map (all BasePart/Model positions), find_space (empty spot for a box), bounds (one path or paths[]), snap_grid (snap an instance pivot to a grid), collision. Areas: searchArea/area/region are {min:[x,y,z], max:[x,y,z]}.

Animate properties with TweenService (plays live in the Studio viewport). Actions: create (build a tween without playing; returns tweenId), play (tweenId from create, or path+goal to create-and-play), pause, resume, cancel/stop_all. pause/resume/cancel accept tweenId or affect all tracked tweens. goal/properties map e.g. {"Position": [0,10,0], "Transparency": 0.5}.

Manage Sound instances. Actions: create (soundId number or 'rbxassetid://...' — do not invent IDs), play, pause, resume, stop, stop_all, list, set, set_listener (SoundService listener: Camera, CFrame, ObjectPosition, or ObjectCFrame). Prefer user-provided or search-accepted asset IDs.

Manage animations. Actions: create (Animation with animationId — do not invent IDs), list, load (load onto a rig without playing), play, stop, stop_all, get_tracks (tracks on a rig). Prefer user-provided or search-accepted animation IDs.

Create, inspect, preview, and interact with Roblox UI. Actions: design_brief (plan a UI from a text brief; set create=true to build it), create_tree, update, list, inspect, list_interactive, preview (clone into CoreGui in Edit), hide_preview, click (VirtualInput / attribute click — PlayerGui during playtest, StarterGui in Edit), type_text, scroll (ScrollingFrame CanvasPosition — PlayerGui during playtest, StarterGui in Edit), get_abs, check, delete.

Get or set the Studio selection. Actions: get, set (paths array), add, remove, clear, details (selection + common properties, optional maxDepth descendants + includeAncestors), cached (last known selection without a Studio round-trip; maxAge ms), context (selection with script source, properties, and children), watch (install a selection-change watcher; call again to collect changes).

Studio-level operations. Actions: get_mode, play_status, play_start (F5 Play or F8 Run), play_stop, play_pause, play_resume, run_test (inject Luau, play, collect [ROBRIDGE_TEST] logs, stop, write report; auto-records a short viewport clip unless record=false), toggle_ui_preview (StarterGui.ShowDevelopmentGui), test_profile_get/set/reset (Player Emulator — no public API; returns manual_required with instructions), experience_language_get (locale info) / experience_language_set (manual_required), undo, redo, set_waypoint, save_prompt. After adding a player-facing feature (UI, clicks, shop, movement, leaderstats), playtest with run_test or play_start before reporting done. Prefer run_test over manually sequencing play_start + logs + play_stop. Viewport clips: manage_camera.record, or run_test (attaches clip metadata).

Simulate input. In playtest: walk_to (Humanoid:MoveTo a path/position), click_world (VirtualInput at a 3D instance screen pos), walk_and_click (walk then click — use this to verify world clicks), click_at (viewport pixels), click_path (PlayerGui GuiButton), key, type_text. Clicks use UserInputService:CreateVirtualInput, not VirtualInputManager. In edit: click_path uses VirtualInput plus a LastClick attribute on the ScreenGui.

Read the Roblox Studio output log (captured by the plugin via LogService; play-mode logs come from the play agent). Actions: get (recent entries, optional levelFilter: Print/Warning/Error, containsFilter, since unix-seconds cursor), errors (Error-level only), clear.

Snapshot of the place. Actions: summary (place info, top-level services, selection, camera), counts (instance counts by ClassName under a path), sync (hierarchy outline + metadata + change stats), snapshot (instance tree under a path, maxDepth), changes (recent added/removed instances — installs a watcher on first call), clear_history (reset the change log), viewport (camera + viewport size + selection bounds), metadata (place ids, counts, timestamps), scripts (all script paths with line counts), selection_info (selection with bounds), clear_cache (drop watchers and cached plugin state).

RoBridge + Studio status. No action (or action=info) returns the full snapshot. Actions: ping (latency), connection (edit/play sessions), place_info, services (DataModel services), usage (per-tool call statistics for this server session), preflight (read-only Studio diagnostics: mode, publish status, HttpService, loadstring, Mesh/Image APIs — with fix instructions).

Sync between Studio and the local filesystem. Actions: export_scripts (dump every script source under a path to ./sync// on disk), status / status_current_place (place + sync dir + last export), history (recent sync operations), directions (get or set per-type sync directions), read_file (read a synced script file by instancePath), write_file (write content to the synced file AND apply it to the Studio script), progress (last export stats).

Roblox Toolbox/Creator Store assets plus a local asset library. ALWAYS search first, then insert using an assetId from those results — never invent or hardcode IDs. Actions: search (keyword/query + assetType), preview / info (metadata for a search-result assetId), insert / insert_free / insert_package (assetId into parentPath), search_insert (search then insert the first match), export_selection_json (JSON snapshot of the Studio selection), export_selection_rbxm / export_path_rbxm (serialize selection or a path into the local ./asset-library as a re-importable asset), import_rbxm (rebuild a library asset in Studio), review_model (QA a model: anchoring, PrimaryPart, naming, size, expected groups; readiness verdict), generate_model (Roblox GenerationService, if this Studio has access), upload_asset (AssetService:CreateAssetAsync — requires confirm=true), generate_thumbnail (render a library asset to a PNG thumbnail).

Run arbitrary Luau code in Roblox Studio (plugin security level, Edit-only). During Play use manage_studio.run_test / play agents instead — plugin loadstring is unavailable in Play. The code may return a value, which is JSON-encoded (Instances become path strings, Roblox types become typed tables). A helper table RB is available with RB.resolve(path or rbId), RB.encode(value), RB.summary(instance) (includes rbId), RB.setProp(instance, name, value), RB.stripIds().

Run several RoBridge tool calls in one request as a single undo waypoint. Each command is {tool, args}. Stops on first error unless continueOnError is true (stopOnError is the inverse alias). Nested batch_execute is rejected. Prefer this over many round-trips for related mutations.