Tool Reference

UE-MCP exposes 19 category tools covering 300+ actions. Every tool takes an action parameter that selects the operation, plus action-specific parameters.

Tip

Start with project(action="get_status") to check the connection, then level(action="get_outliner") or asset(action="list") to explore.

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project — Project Status, Config INI, C++ Source

Action	Description	Key Params
get_status	Server mode and editor connection status
set_project	Switch to a different UE project (auto-deploys bridge)	projectPath
get_info	Read .uproject file details
read_config	Parse an INI config file	configName
search_config	Search all INI files for a string	query
list_config_tags	Extract gameplay tags from config
set_config	Write to an INI file	configName, section, key, value
read_cpp_header	Parse a .h file for UCLASS/USTRUCT/UENUM/UPROPERTY/UFUNCTION	headerPath
read_module	Read C++ module structure and Build.cs	moduleName
list_modules	List all C++ modules in Source/
search_cpp	Search .h/.cpp files for text	query, directory?

Note

read_config, read_cpp_header, list_modules, and search_cpp work without the editor (filesystem only).

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asset — Asset Management, Import, DataTables, Textures

Action	Description	Key Params
list	List assets in a directory	directory?, typeFilter?, recursive?
search	Search by name/class/path (supports wildcards)	query, directory?, maxResults?
read	Read asset via reflection	assetPath
read_properties	Read specific properties of an asset	assetPath, exportName?, propertyName?
duplicate	Duplicate an asset	sourcePath, destinationPath
rename	Rename an asset	assetPath, newName
move	Move an asset to a new path	sourcePath, destinationPath
delete	Delete an asset	assetPath
save	Save asset(s) to disk	assetPath? (omit to save all)
import_static_mesh	Import static mesh from FBX/OBJ	filePath, name?, packagePath?
import_skeletal_mesh	Import skeletal mesh from FBX	filePath, skeletonPath?
import_animation	Import animation from FBX	filePath, skeletonPath?
import_texture	Import texture from PNG/TGA/EXR/HDR	filePath
read_datatable	Read DataTable rows	assetPath, rowFilter?
create_datatable	Create a DataTable	name, rowStruct
reimport_datatable	Reimport DataTable from JSON	assetPath, jsonPath?, jsonString?
list_textures	List texture assets	directory?, recursive?
get_texture_info	Get texture details (size, format, etc.)	assetPath
set_texture_settings	Set texture properties	assetPath, settings

Note

search auto-searches all configured content roots (see Configuration).

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blueprint — Reading, Authoring, Compilation

Action	Description	Key Params
read	Read full Blueprint structure	assetPath
list_variables	List variables with types and flags	assetPath
list_functions	List functions and graphs	assetPath
list_graphs	List all graphs in a blueprint (EventGraph, AnimGraph, etc.)	assetPath
read_graph	Read graph nodes and connections	assetPath, graphName
create	Create a new Blueprint	assetPath, parentClass?
add_variable	Add a variable	assetPath, name, varType
set_variable_properties	Edit variable flags	assetPath, name, instanceEditable?, category?
create_function	Create a function graph	assetPath, functionName
delete_function	Delete a function	assetPath, functionName
rename_function	Rename a function	assetPath, oldName, newName
add_node	Add a graph node (K2, AnimGraph, any UEdGraphNode subclass)	assetPath, nodeClass, graphName?
delete_node	Remove a node	assetPath, graphName, nodeName
set_node_property	Set a node property	assetPath, graphName, nodeName, propertyName, value
connect_pins	Wire two node pins together	assetPath, sourceNode, sourcePin, targetNode, targetPin
add_component	Add a component to the BP	assetPath, componentClass
compile	Compile the Blueprint	assetPath
list_node_types	List available node types by category	category?
search_node_types	Search for node types	query
create_interface	Create a Blueprint Interface	assetPath
add_interface	Implement an interface on a BP	blueprintPath, interfacePath
add_event_dispatcher	Add an event dispatcher	blueprintPath, name

Graph Scripting Workflow

search_node_types → add_node → connect_pins is the standard flow for graph scripting. For AnimBPs: list_graphs → read_graph (with graphName: "AnimGraph") → add_node (with nodeClass: "AnimGraphNode_TwoBoneIK", etc.) → connect_pins.

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level — Actors, Selection, Components, Volumes, Lights, Splines

Action	Description	Key Params
get_outliner	List all actors in the level	classFilter?, nameFilter?
place_actor	Spawn an actor	actorClass, location?, rotation?, label?
delete_actor	Remove an actor	actorLabel
get_actor_details	Inspect an actor's properties	actorLabel
move_actor	Transform an actor	actorLabel, location?, rotation?, scale?
select	Select actors in the editor	actorLabels[]
get_selected	Get current selection
add_component	Add a component to an actor	actorLabel, componentClass
set_component_property	Set a component property	actorLabel, componentName, propertyName, value
get_current	Get current level info
load	Open a level	levelPath
save	Save the current level
list	List map assets
create	Create an empty level
spawn_volume	Place a volume	volumeType, location?, extent?
list_volumes	List volumes in the level	volumeType?
set_volume_properties	Edit volume properties	actorLabel, properties
spawn_light	Place a light	lightType, location?, intensity?, color?
set_light_properties	Edit light properties	actorLabel, intensity?, color?, temperature?
build_lighting	Build lighting	quality?
get_spline_info	Read spline component data	actorLabel
set_spline_points	Set spline points	actorLabel, points[], closedLoop?

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material — Materials, Instances, Shading, Graph Authoring

Action	Description	Key Params
read	Read material structure	assetPath
list_parameters	List overridable parameters	assetPath
set_parameter	Set scalar/vector/texture parameter	assetPath, parameterName, value
create_instance	Create a material instance	parentPath, name?
create	Create a new material	name, packagePath?
set_shading_model	Set shading model	assetPath, shadingModel
set_base_color	Set base color	assetPath, color {r,g,b}
connect_texture	Wire a texture to a material property	materialPath, texturePath, property
add_expression	Add a material expression node	assetPath, expressionType, name?
connect_expressions	Connect two expression nodes	assetPath, sourceExpression, sourceOutput, destExpression, destInput
connect_to_property	Connect expression to a material property	assetPath, expressionName, outputIndex?, property
list_expressions	List expressions in a material	assetPath
delete_expression	Delete an expression node	assetPath, expressionName
list_expression_types	List available expression types	filter?
recompile	Recompile the material	assetPath

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animation — Anim Assets, Skeletons, Montages, Blendspaces

Action	Description	Key Params
read_anim_blueprint	Read AnimBP structure	assetPath
read_montage	Read montage sections and notifies	assetPath
read_sequence	Read animation sequence	assetPath
read_blendspace	Read blendspace samples	assetPath
list	List animation assets	directory?, recursive?
create_montage	Create montage from a sequence	animSequencePath
create_anim_blueprint	Create an AnimBP	skeletonPath
create_blendspace	Create a blendspace	skeletonPath
add_notify	Add a notify event	assetPath, notifyName, triggerTime
get_skeleton_info	Read skeleton bone hierarchy	assetPath
list_sockets	List skeleton sockets	assetPath
list_skeletal_meshes	List skeletal meshes in project	directory?
get_physics_asset	Read physics asset bodies	assetPath
create_sequence	Create blank AnimSequence	name, skeletonPath, packagePath?, numFrames?, frameRate?
set_bone_keyframes	Set bone transform keyframes	assetPath, boneName, keyframes
get_bone_transforms	Read reference pose transforms	skeletonPath, boneNames?
set_montage_sequence	Replace animation in a montage (auto-updates duration)	assetPath, animSequencePath, slotIndex?
set_montage_properties	Set montage duration, rate, and blending	assetPath, sequenceLength?, rateScale?, blendIn?, blendOut?

Note

Most animation tools need a skeleton path — use list_skeletal_meshes to find it.

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landscape — Terrain Sculpting, Painting, Layers

Action	Description	Key Params
get_info	Get landscape setup (size, scale, layers)
list_layers	List paint layers
sample	Sample height and layer weights at a point	x, y
list_splines	Read landscape splines
get_component	Inspect a landscape component	componentIndex
sculpt	Sculpt the heightmap	x, y, radius, strength
paint_layer	Paint a weight layer	layerName, x, y, radius
set_material	Set the landscape material	materialPath
add_layer_info	Register a paint layer	layerName
import_heightmap	Import a heightmap file	filePath

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pcg — Procedural Content Generation

Action	Description	Key Params
list_graphs	List PCG graph assets	directory?
read_graph	Read graph structure (nodes and edges)	assetPath
read_node_settings	Read a node's settings	assetPath, nodeName
get_components	List PCG components in the level
get_component_details	Inspect a PCG component	actorLabel
create_graph	Create a new PCG graph	name
add_node	Add a node to the graph	assetPath, nodeType
connect_nodes	Wire two nodes	assetPath, sourceNode, sourcePin, targetNode, targetPin
set_node_settings	Set node parameters	assetPath, nodeName, settings
remove_node	Remove a node	assetPath, nodeName
execute	Regenerate PCG output	actorLabel
add_volume	Place a PCG volume in the level	graphPath, location?, extent?

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foliage — Foliage Painting and Types

Action	Description	Key Params
list_types	List foliage types in the level
get_settings	Read foliage type settings	foliageTypeName
sample	Query foliage instances in a region	center {x,y,z}, radius
paint	Add foliage instances	foliageType, center, radius
erase	Remove foliage instances	center, radius
create_type	Create a foliage type from a StaticMesh	meshPath
set_settings	Modify foliage type settings	foliageTypeName, settings

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niagara — VFX Systems and Graph Authoring

Action	Description	Key Params
list	List Niagara assets	directory?
get_info	Inspect a Niagara system	assetPath
spawn	Spawn VFX at a location	systemPath, location
set_parameter	Set parameter on a spawned component	actorLabel, parameterName, value
create	Create a new Niagara System	name
create_emitter	Create a Niagara Emitter	name
add_emitter	Add an emitter to a system	systemPath, emitterPath
list_emitters	List emitters in a system	assetPath
set_emitter_property	Set emitter property	assetPath, emitterName, propertyName, value
list_modules	List modules in an emitter	assetPath, emitterName
get_emitter_info	Get detailed emitter info	assetPath, emitterName

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audio — Sound Assets and Playback

Action	Description	Key Params
list	List sound assets	directory?
play_at_location	Play a sound at a world location	soundPath, location
spawn_ambient	Place an ambient sound actor	soundPath, location
create_cue	Create a SoundCue	name, soundWavePath?
create_metasound	Create a MetaSoundSource	name

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widget — UMG Widgets and Editor Utilities

Action	Description	Key Params
read_tree	Read widget hierarchy	assetPath
get_details	Inspect a specific widget	assetPath, widgetName
set_property	Set a widget property	assetPath, widgetName, propertyName, value
list	List Widget Blueprints	directory?
read_animations	Read UMG animations	assetPath
create	Create a Widget Blueprint	name
create_utility_widget	Create an Editor Utility Widget	name
run_utility_widget	Open an Editor Utility Widget panel	assetPath
create_utility_blueprint	Create an Editor Utility Blueprint	name
run_utility_blueprint	Run an Editor Utility Blueprint	assetPath

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editor — Console, Python, PIE, Viewport, Sequencer, Build, Logs

Action	Description	Key Params
execute_command	Run a console command	command
execute_python	Run Python in the editor (escape hatch)	code
set_property	Set a UObject property by path	objectPath, propertyName, value
play_in_editor	PIE control	pieAction (start/stop/status)
get_runtime_value	Read a PIE actor property value	actorLabel, propertyName
hot_reload	Trigger Live Coding hot reload
undo	Undo last editor transaction
redo	Redo
get_perf_stats	Get editor performance stats
run_stat	Toggle stat overlay	command
set_scalability	Set quality/scalability level	level
capture_screenshot	Capture a viewport screenshot	filename?, resolution?
get_viewport	Get viewport camera transform
set_viewport	Set viewport camera transform	location?, rotation?
focus_on_actor	Focus viewport on an actor	actorLabel
create_sequence	Create a Level Sequence	name
get_sequence_info	Read sequence tracks and keyframes	assetPath
add_sequence_track	Add a track to a sequence	assetPath, trackType, actorLabel?
play_sequence	Play/stop/pause a sequence	assetPath, sequenceAction
build_all	Run full build (geometry + lighting + navigation)
build_geometry	Build geometry only
build_hlod	Build HLODs
validate_assets	Run data validation
get_build_status	Check build status
cook_content	Cook content for target platform
get_log	Get output log entries	category?
search_log	Search log entries	query
get_message_log	Get message log
set_dialog_policy	Auto-respond to modal dialogs	dialogTitle, response
clear_dialog_policy	Clear dialog auto-response	dialogTitle?
get_dialog_policy	Get current dialog policies
list_dialogs	List pending modal dialogs
respond_to_dialog	Respond to a specific dialog	dialogId, response

Tip

• execute_python is the escape hatch for anything not covered by dedicated tools.
• hot_reload triggers Live Coding — no editor restart needed.
• get_log(category="LogMCPBridge") shows bridge-specific logs.
• Dialog management lets you suppress "Are you sure?" prompts during batch operations.

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reflection — UE Class/Struct/Enum Reflection, Gameplay Tags

Action	Description	Key Params
reflect_class	Reflect a UClass (properties, functions, metadata)	className, includeInherited?
reflect_struct	Reflect a UScriptStruct	structName
reflect_enum	Reflect a UEnum	enumName
list_classes	List registered classes	parentFilter?, limit?
list_tags	List gameplay tags	filter?
create_tag	Create a gameplay tag	tag, comment?

Tip

Use reflect_class to understand any UE class's properties before working with it.

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gameplay — Physics, Collision, Navigation, Input, AI, Game Framework

Action	Description	Key Params
set_collision_profile	Set collision preset on an actor	actorLabel, profileName
set_simulate_physics	Toggle physics simulation	actorLabel, simulate
set_collision_enabled	Set collision mode	actorLabel, collisionEnabled
set_physics_properties	Set mass, damping, gravity	actorLabel, mass?, linearDamping?
rebuild_navigation	Rebuild the navigation mesh
get_navmesh_info	Query navigation system info
project_to_nav	Project a point onto the navmesh	location
spawn_nav_modifier	Place a nav modifier volume	location, extent?, areaClass?
create_input_action	Create an Enhanced Input Action	name, valueType?
create_input_mapping	Create an Input Mapping Context	name
list_input_assets	List input-related assets	directory?
list_behavior_trees	List Behavior Trees and Blackboards	directory?
get_behavior_tree_info	Inspect a Behavior Tree	assetPath
create_blackboard	Create a Blackboard Data asset	name
create_behavior_tree	Create a Behavior Tree	name, blackboardPath?
create_eqs_query	Create an EQS query	name
list_eqs_queries	List EQS queries
add_perception	Add AI Perception component	blueprintPath
configure_sense	Configure a perception sense	blueprintPath, senseClass, settings
create_state_tree	Create a State Tree	name
list_state_trees	List State Trees
add_state_tree_component	Add State Tree component to an actor	actorLabel
create_smart_object_def	Create a Smart Object Definition	name
add_smart_object_component	Add Smart Object component	actorLabel
create_game_mode	Create a Game Mode BP	name
create_game_state	Create a Game State BP	name
create_player_controller	Create a Player Controller BP	name
create_player_state	Create a Player State BP	name
create_hud	Create a HUD BP	name
set_world_game_mode	Set the world's game mode	gameModePath
get_framework_info	Get game framework class assignments

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gas — Gameplay Ability System

Action	Description	Key Params
add_asc	Add AbilitySystemComponent to a BP	blueprintPath
create_attribute_set	Create an AttributeSet Blueprint	name, packagePath?
add_attribute	Add an attribute to a set	attributeSetPath, attributeName
create_ability	Create a GameplayAbility Blueprint	name, parentClass?
set_ability_tags	Set activation/cancel/block tags	abilityPath, ability_tags?, activation_required_tags?
create_effect	Create a GameplayEffect Blueprint	name, durationPolicy?
set_effect_modifier	Add a modifier to an effect	effectPath, attribute, operation?, magnitude?
create_cue	Create a GameplayCue notify	name, cueType? (Static/Actor)
get_info	Inspect GAS setup on a Blueprint	blueprintPath

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networking — Replication and Networking

Action	Description	Key Params
set_replicates	Enable/disable actor replication	blueprintPath, replicates?
set_property_replicated	Mark a variable as replicated	blueprintPath, propertyName
configure_net_frequency	Set net update frequency	blueprintPath, netUpdateFrequency?
set_dormancy	Set net dormancy mode	blueprintPath, dormancy
set_net_load_on_client	Control client loading	blueprintPath, loadOnClient?
set_always_relevant	Always network relevant	blueprintPath, alwaysRelevant?
set_only_relevant_to_owner	Only relevant to owning connection	blueprintPath, onlyRelevantToOwner?
configure_cull_distance	Set net cull distance	blueprintPath, netCullDistanceSquared?
set_priority	Set net priority	blueprintPath, netPriority?
set_replicate_movement	Enable/disable movement replication	blueprintPath, replicateMovement?
get_info	Get current networking config	blueprintPath

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demo — Neon Shrine Demo Scene

Action	Description	Key Params
step	Execute a demo step (omit stepIndex for step list)	stepIndex?
cleanup	Remove all demo assets and actors

See Neon Shrine Demo for a full walkthrough.

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feedback — Agent Feedback Submission

Action	Description	Key Params
submit	Submit feedback about a tool gap	title, summary, pythonWorkaround?, idealTool?

See Feedback for details on how the feedback system works.