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Flux-Point-Studios

Unreal Engine MCP Server

manage_widget_authoring

Create UMG widgets, configure layouts, bindings, and animations, and build HUDs and menus in Unreal Engine.

Instructions

Create UMG widgets: buttons, text, images, sliders. Configure layouts, bindings, animations. Build HUDs and menus.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
topNoTop padding.
fontNoFont asset path.
leftNoLeft padding.
nameNoName identifier.
textNoText content.
timeNoKeyframe time.
angleNoAngle in degrees.
brushNoBrush asset path.
colorNoWidget color.
deltaNoSpinbox increment.
pivotNoRotation/scale pivot.
rightNoRight padding.
scaleNoRender scale.
shearNoRender shear.
sizeXNoWidth.
sizeYNoHeight.
styleNoStyle preset name.
valueNoSlider/spinbox value.
actionYesThe widget authoring action to perform.
bottomNoBottom padding.
folderNoPath to a directory.
lengthNoAnimation length in seconds.
zOrderNoZ-order for canvas slot.
opacityNoWidget opacity (0-1).
optionsNoCombo box options.
paddingNoUniform padding.
percentNoProgress bar percentage (0-1).
stretchNoScale box stretch mode.
ammoIconNoAmmo icon texture.
autoWrapNoEnable text auto-wrap.
barColorNoBar color.
barStyleNoHealth bar style.
clippingNoWidget clipping mode.
elementsNoHUD elements to include.
fadeTimeNoFade time in seconds.
fontSizeNoFont size.
gridSizeNoInventory grid size.
hintTextNoPlaceholder hint text.
maxValueNoMaximum value.
minValueNoMinimum value.
playModeNoAnimation play mode.
rowCountNoNumber of rows.
slotNameNoName of the slot.
slotSizeNoInventory slot size.
stepSizeNoValue step size.
alignmentNoWidget alignment (0-1).
ammoStyleNoAmmo counter style.
anchorMaxNoMaximum anchor point (0-1).
anchorMinNoMinimum anchor point (0-1).
brushSizeNoBrush/image size.
inputTypeNoText input type.
isCheckedNoCheckbox checked state.
isEnabledNoWidget enabled state.
isMarqueeNoProgress bar marquee mode.
loopCountNoNumber of loops (-1 for infinite).
positionXNoX position.
positionYNoY position.
showIconsNoShow icons in radial menu.
titleTextNoMenu title text.
trackTypeNoAnimation track type.
wrapWidthNoWrap width for wrap box.
alignmentXNoHorizontal alignment (0-1).
alignmentYNoVertical alignment (0-1).
brushColorNoBorder brush color.
isPasswordNoPassword masking.
parentSlotNoParent slot to add widget to.
showLabelsNoShow labels in radial menu.
visibilityNoWidget visibility state.
widgetPathNoWidget blueprint path.
barFillTypeNoProgress bar fill direction.
bindingTypeNoBinding type.
brushTilingNoImage tiling mode.
columnCountNoNumber of columns.
customWidthNoCustom preview width.
innerRadiusNoInner radius of radial menu.
minimapSizeNoMinimap size.
orientationNoWidget orientation.
outerRadiusNoOuter radius of radial menu.
parentClassNoPath or name of the parent class.
previewSizeNoPreview resolution preset.
showDegreesNoShow compass degrees.
showDetailsNoShow item details panel.
showKeyIconNoShow key icon in prompt.
showNumbersNoShow numeric values.
showReserveNoShow reserve ammo.
slotPaddingNoPadding between slots.
texturePathNoTexture asset path.
translationNoRender translation.
choiceLayoutNoDialog choice layout.
customHeightNoCustom preview height.
functionNameNoName of the function.
keyIconStyleNoKey icon style.
minimapShapeNoMinimap shape.
promptFormatNoInteraction prompt format.
propertyNameNoName of the property.
segmentCountNoNumber of radial segments.
settingsTypeNoSettings menu type.
showPortraitNoShow speaker portrait.
showProgressNoShow objective progress.
animationNameNoAnimation name.
bindingSourceNoVariable or function name to bind to.
crosshairSizeNoCrosshair size.
interpolationNoKeyframe interpolation.
justificationNoText justification.
selectionModeNoSelection mode for list/tree.
showCardinalsNoShow cardinal directions.
showEquipmentNoShow equipment panel.
sizeToContentNoSize to content.
widthOverrideNoWidth override for size box.
animateUpdatesNoAnimate objective updates.
crosshairStyleNoCrosshair style.
heightOverrideNoHeight override for size box.
includeTipTextNoInclude tip text.
indicatorStyleNoDamage indicator style.
selectedOptionNoSelected combo box option.
showObjectivesNoShow objectives on minimap.
backgroundImageNoBackground image path.
colorAndOpacityNoColor and opacity (0-1 values).
minDesiredWidthNoMinimum desired width.
showSpeakerNameNoShow speaker name.
entryWidgetClassNoList/tree view entry widget class.
innerSlotPaddingNoInner slot padding.
minDesiredHeightNoMinimum desired height.
rotateWithPlayerNoRotate minimap with player.
spreadMultiplierNoCrosshair spread multiplier.
stretchDirectionNoScale box stretch direction.
explicitWrapWidthNoUse explicit wrap width.
includePlayButtonNoInclude play button in menu.
includeQuitButtonNoInclude quit button.
onHoveredFunctionNoFunction to call on hover.
verticalAlignmentNoVertical alignment.
includeApplyButtonNoInclude apply button.
includeProgressBarNoInclude progress bar.
includeResetButtonNoInclude reset button.
userSpecifiedScaleNoUser specified scale value.
alwaysShowScrollbarNoAlways show scrollbar.
fillColorAndOpacityNoFill color for progress bar.
horizontalAlignmentNoHorizontal alignment.
includeResumeButtonNoInclude resume button.
minDesiredSlotWidthNoMinimum slot width.
onUnhoveredFunctionNoFunction to call on unhover.
scrollBarVisibilityNoScroll bar visibility.
maxVisibleObjectivesNoMaximum visible objectives.
minDesiredSlotHeightNoMinimum slot height.
includeSettingsButtonNoInclude settings button.
includeBackgroundImageNoInclude background image.
includeQuitToMenuButtonNoInclude quit to menu button.
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations indicate readOnlyHint=false, destructiveHint=false, idempotentHint=false, but the description adds no behavioral details such as side effects on widget blueprints or consequences of actions. It merely restates the purpose without context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is brief and front-loaded with the primary purpose, using two sentences. However, it is too terse for the tool's complexity, omitting the critical action parameter and the breadth of operations.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the 147-parameter schema, many actions, and no output schema, the description is severely under-specified. It does not explain the action-driven nature of the tool or provide any operational context that the schema alone cannot convey.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

All 147 parameters have schema descriptions, giving high coverage. The description groups some parameters by concept (layouts, bindings, animations) but does not add meaning beyond the schema, such as what parameters are required for each action.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses specific verbs (Create, Configure, Build) and identifies UMG widgets as the resource, listing common widget types. However, it does not distinguish this tool from siblings like manage_blueprint or manage_asset, and it omits the action parameter that drives the tool.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for widget authoring tasks but provides no explicit guidance on when to prefer this over sibling tools like manage_asset or manage_blueprint. No exclusions or alternative recommendations are given.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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