Skill directory
Agent skills
Focused instruction packs that teach a coding agent one job well. Browse the catalog and use any of them inside a RiverX project.
18,175Skills
1,902Publishers
249Official
Ue Actor Component Architecturequodsoler/unreal-engine-skillsUse this skill when working with Actor and component design in Unreal Engine. Triggers on: Actor, component, BeginPlay, Tick, SpawnActor, lifecycle, CreateDefaultSubobject, composition, EndPlay, PostInitializeComponents, UActorComponent, USceneComponent, UINTERFACE, attachment, spawn, interface. See references/actor-lifecycle.md and references/component-types.md for detailed tables.03Ue AI Navigationquodsoler/unreal-engine-skillsUse this skill when implementing AI, AIController, behavior tree, blackboard, AI perception, NavMesh, EQS, navigation, pathfinding, State Tree, or Smart Objects in Unreal Engine. See references/behavior-tree-patterns.md for BT patterns and references/eqs-reference.md for EQS configuration. For AI ability use, see ue-gameplay-abilities.03Ue Animation Systemquodsoler/unreal-engine-skillsUse this skill when working with Unreal Engine animation: AnimInstance, montage playback, blend space, state machine, anim notify, IK, AnimGraph, skeletal mesh, or linked anim graphs. See references/anim-notify-reference.md for notify patterns and references/locomotion-setup.md for locomotion setup. For montage integration with GAS, see ue-gameplay-abilities.03Ue Async Threadingquodsoler/unreal-engine-skillsUse this skill when working with Unreal Engine async operations, threading, parallel execution, or concurrency. Also use when the user mentions 'FRunnable', 'FAsyncTask', 'TaskGraph', 'UE::Tasks', 'ParallelFor', 'TFuture', 'TPromise', 'Async()', 'thread safety', 'FCriticalSection', 'FRWLock', 'background thread', 'game thread dispatch', or 'thread pool'. For networking async (RPCs, replication), see ue-networking-replication. For asset streaming, see ue-data-assets-tables.03Ue Audio Systemquodsoler/unreal-engine-skillsUse this skill when working with audio, sound, music, UAudioComponent, PlaySoundAtLocation, SoundCue, MetaSound, attenuation, submix, concurrency, SFX, or spatial audio in Unreal Engine. See references/audio-setup-patterns.md for music system and ambient soundscape architectures. For VFX audio synchronization, see ue-niagara-effects.02Ue Character Movementquodsoler/unreal-engine-skillsUse this skill when working with character movement, CharacterMovementComponent, CMC, movement modes, walking, falling, swimming, flying, custom movement, network prediction, FSavedMove, root motion, floor detection, step-up, or character physics. Also use for 'PhysWalking', 'PhysCustom', 'LaunchCharacter', 'WalkableFloor', or 'movement replication'. See references/ for CMC extension patterns and movement pipeline details.03Ue Cpp Foundationsquodsoler/unreal-engine-skillsUse when writing Unreal Engine C++ code involving UPROPERTY, UFUNCTION, UCLASS, TArray, TMap, delegates, FString, garbage collection, or smart pointers. Also use when the user asks about "UE C++", USTRUCT, UENUM, FName, FText, TObjectPtr, TWeakObjectPtr, UObject lifetime, UE_LOG, or UE subsystems. For module build configuration, see ue-module-build-system. For Actor/Component architecture, see ue-actor-component-architecture.04Ue Data Assets Tablesquodsoler/unreal-engine-skillsUse when working with DataAsset, DataTable, soft reference, hard reference, TSoftObjectPtr, async loading, Asset Manager, StreamableManager, or game data structures in Unreal Engine. See references/asset-loading-patterns.md for async loading and StreamableManager patterns. See references/data-driven-design.md for data-driven gameplay architecture. For serialization, see ue-serialization-savegames. For C++ foundations, see ue-cpp-foundations.03Ue Editor Toolsquodsoler/unreal-engine-skillsUse when extending the Unreal Editor with editor tool, editor utility widget, Blutility, detail customization, property customization, editor mode, asset editor, editor subsystem, editor extension, UToolMenus, or scripted asset operations. For Slate fundamentals, see ue-ui-umg-slate. For module build config, see ue-module-build-system.03Ue Game Featuresquodsoler/unreal-engine-skillsUse this skill when working with Game Feature plugins, modular gameplay, GameFeatureAction, GameFeatureData, GameFrameworkComponentManager, init state system, experience system, modular components, UPawnComponent, UControllerComponent, UGameStateComponent, UPlayerStateComponent, or Lyra-style modular architecture. See references/ for code templates and experience system patterns.03Ue Gameplay Abilitiesquodsoler/unreal-engine-skillsUse this skill when working with GAS, Gameplay Ability System, GameplayAbility, GameplayEffect, AttributeSet, GameplayTags, ability system, buffs, debuffs, cooldowns, or attribute modification. See references/ for detailed setup patterns, effect configuration, and ability task usage.04Ue Gameplay Frameworkquodsoler/unreal-engine-skillsUse this skill when working with Unreal Engine's gameplay framework classes: GameMode, GameState, PlayerController, PlayerState, Pawn, Character, or GameInstance. Also use when the user mentions 'gameplay framework', 'game rules', 'player management', 'match flow', or 'player spawning'. See references/framework-class-map.md for the full authority/presence matrix. For networking/replication, see ue-networking-replication. For input setup, see ue-input-system.02Ue Input Systemquodsoler/unreal-engine-skillsUse this skill when implementing player input with Unreal Engine's Enhanced Input system. Also use when the user mentions 'Enhanced Input', 'input', 'input action', 'InputAction', 'mapping context', 'InputMappingContext', 'input binding', 'key binding', 'input trigger', 'input modifier', 'gamepad', or 'keyboard'. Covers ETriggerEvent, built-in triggers (Hold, Tap, Pulse, ChordAction, Combo), built-in modifiers (DeadZone, Scalar, Negate, SwizzleAxis), and custom trigger/modifier authoring. See references/input-action-reference.md for the full catalogue. For UI input modes, see ue-ui-umg-slate.02Ue Mass Entityquodsoler/unreal-engine-skillsUse this skill when working with Mass Entity, MassEntity, Mass AI, MassProcessor, MassFragment, MassTag, MassObserver, MassSpawner, MassCrowd, Mass ECS, entity archetype, ForEachEntityChunk, FMassEntityQuery, FMassEntityManager, ISM crowd, or large-scale entity simulation in Unreal Engine. See references/mass-entity-patterns.md for processor and observer templates. See references/mass-fragment-reference.md for built-in fragment types.03Ue Materials Renderingquodsoler/unreal-engine-skillsUse when the user is working with material, shader, MID, dynamic material, material instance, post-process, render target, parameter collection, decal, Nanite, Lumen, or rendering in Unreal Engine. See references/material-parameter-reference.md for parameter patterns and references/post-process-settings.md for post-process settings. For particle rendering, see ue-niagara-effects.03Ue Module Build Systemquodsoler/unreal-engine-skillsUse when working with Build.cs, Target.cs, module creation, plugin setup, or build errors in Unreal Engine — including "unresolved external symbol," "cannot open include file," IWYU violations, missing API macros, or dependency configuration. See also ue-cpp-foundations for UObject macro patterns.03Ue Networking Replicationquodsoler/unreal-engine-skillsUse this skill when working on multiplayer networking, replication, RPC calls, net role logic, server/client authority, prediction, or synchronizing game state. Also use when the user mentions 'DOREPLIFETIME', 'dedicated server', 'replicated', or 'net role'. See references/replication-patterns.md for common patterns and references/rpc-decision-guide.md for RPC type selection. For GAS networking, see ue-gameplay-abilities.03Ue Niagara Effectsquodsoler/unreal-engine-skillsUse this skill when working with Niagara particle systems, VFX, effects, emitter, Niagara component, or Niagara parameter in Unreal Engine C++. Covers spawning systems, setting parameters, data interfaces (SkeletalMesh, StaticMesh, Curve, Array), OnSystemFinished delegate, and performance tuning. See references/niagara-parameter-types.md for type mapping and references/niagara-data-interfaces.md for data interface catalogue. For particle materials, see ue-materials-rendering.03Ue Physics Collisionquodsoler/unreal-engine-skillsUse when implementing collision detection, trace queries, physics simulation, or physical interactions in Unreal Engine. Triggers on: 'collision', 'trace', 'LineTrace', 'line trace', 'overlap', 'physics', 'hit result', 'sweep', 'collision channel', 'physics body', 'Chaos', 'raytrace', 'OnHit', 'OnBeginOverlap'. See related skills for component architecture and AI navigation.03Ue Procedural Generationquodsoler/unreal-engine-skillsUse this skill when working with procedural generation in Unreal Engine: PCG framework, ProceduralMesh, instanced mesh, HISM, spline, runtime mesh, noise, terrain generation, or dungeon generation. See references/pcg-node-reference.md for PCG node types and references/procedural-mesh-patterns.md for mesh generation patterns. For physics on procedural geometry, see ue-physics-collision.03Ue Project Contextquodsoler/unreal-engine-skillsWhen the user wants to create or update their Unreal Engine project context document. Use when the user says 'project context,' 'set up context,' 'UE context,' 'configure project,' or wants to avoid repeating their project setup across UE development tasks. Creates `.agents/ue-project-context.md` that all other UE skills reference. See related skills footer for skills that depend on this context.01Ue Sequencer Cinematicsquodsoler/unreal-engine-skillsUse this skill when working with Sequencer, LevelSequence, cutscene, cinematic, camera, movie scene, sequencer event, or Movie Render Queue in Unreal Engine. See references/sequencer-patterns.md for dialogue cutscene, in-game camera, and scripted event patterns. For animation playback, see ue-animation-system.02Ue Serialization Savegamesquodsoler/unreal-engine-skillsUse when implementing save/load systems, player progress persistence, or data serialization in Unreal Engine. Triggers on: save game, USaveGame, FArchive, serialization, SaveGameToSlot, config, persist data, save file, load game. See references/save-system-architecture.md for full slot management and multi-user patterns.02Ue State Treesquodsoler/unreal-engine-skillsUse this skill when working with State Tree, StateTree, UStateTree, state machine, StateTreeTask, StateTreeCondition, StateTreeEvaluator, StateTreeSchema, AI State Tree, Mass StateTree, FStateTreeExecutionContext, or data-driven state logic in Unreal Engine. See references/state-tree-patterns.md for task/condition/evaluator templates and references/state-tree-mass-integration.md for Mass Entity integration.03Ue Testing Debuggingquodsoler/unreal-engine-skillsUse when writing automation tests, functional tests, or any test in Unreal Engine. Also use when the user asks about "UE_LOG", logging, log categories, assertion, check, ensure, verify, DrawDebug, debug draw, console command, profiling, Unreal Insights, stat commands, or debugging techniques. See ue-module-build-system for test module setup, and ue-cpp-foundations for general C++ logging patterns.03Ue UI Umg Slatequodsoler/unreal-engine-skillsUse this skill when working with UMG, UI, widget, UserWidget, Slate, HUD, BindWidget, Common UI, menu, or UMG binding in Unreal Engine. See references/widget-types.md for widget type reference and references/common-ui-setup.md for Common UI plugin setup. For Slate in editor tools, see ue-editor-tools. For input mode management, see ue-input-system.03Ue World Level Streamingquodsoler/unreal-engine-skillsUse this skill when working with World Partition, level streaming, level travel, OpenLevel, ServerTravel, data layer, world subsystem, level instance, sub-level, seamless travel, open world, or HLOD. See references/streaming-patterns.md for configuration patterns by game type.02
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