Agent skill

Gas

by kevinpbuckley in kevinpbuckley/VibeUE

Install Gas

skills CLI

$ npx skills add kevinpbuckley/VibeUE --skill gas -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install kevinpbuckley/VibeUE gas --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/kevinpbuckley/VibeUE.git skills-src && mkdir -p .claude/skills && cp -r skills-src/Content/Skills/gas .claude/skills/gas && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "gas" agent skill from https://github.com/kevinpbuckley/VibeUE/tree/master/Content/Skills/gas into .claude/skills/gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gas", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/kevinpbuckley/VibeUE/tree/master/Content/Skills/gas

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add kevinpbuckley/VibeUE --skill gas -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install kevinpbuckley/VibeUE gas --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/kevinpbuckley/VibeUE.git skills-src && mkdir -p .agents/skills && cp -r skills-src/Content/Skills/gas .agents/skills/gas && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "gas" agent skill from https://github.com/kevinpbuckley/VibeUE/tree/master/Content/Skills/gas into .agents/skills/gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gas", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add kevinpbuckley/VibeUE --skill gas -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install kevinpbuckley/VibeUE gas --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/kevinpbuckley/VibeUE.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/Content/Skills/gas .cursor/skills/gas && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "gas" agent skill from https://github.com/kevinpbuckley/VibeUE/tree/master/Content/Skills/gas into .cursor/skills/gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gas", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/kevinpbuckley/VibeUE.git --path Content/Skills/gas

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add kevinpbuckley/VibeUE --skill gas -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install kevinpbuckley/VibeUE gas --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/kevinpbuckley/VibeUE.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/Content/Skills/gas .gemini/skills/gas && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "gas" agent skill from https://github.com/kevinpbuckley/VibeUE/tree/master/Content/Skills/gas into .gemini/skills/gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gas", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install kevinpbuckley/VibeUE gas

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add kevinpbuckley/VibeUE --skill gas -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/kevinpbuckley/VibeUE.git skills-src && mkdir -p .github/skills && cp -r skills-src/Content/Skills/gas .github/skills/gas && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "gas" agent skill from https://github.com/kevinpbuckley/VibeUE/tree/master/Content/Skills/gas into .github/skills/gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gas", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add kevinpbuckley/VibeUE --skill gas -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install kevinpbuckley/VibeUE gas --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/kevinpbuckley/VibeUE.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/Content/Skills/gas .opencode/skills/gas && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "gas" agent skill from https://github.com/kevinpbuckley/VibeUE/tree/master/Content/Skills/gas into .opencode/skills/gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gas", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: gas
GitHub stars: 730
Token cost: ~1.8k tokens
SKILL.md length: 599 words
Files: 1
Skills in repo: 39
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

The user asks to add abilities
SKILL.md covers Ownership matrix — who does what, Python exposure facts…, PIE verification recipe (one… and C++ authoring gotchas (for the…, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Damage/buff effects

What it does

Gas is an agent skill from kevinpbuckley/VibeUE. Author and PIE-verify Gameplay Ability System content — abilities, attribute sets, gameplay effects, gameplay events, costs/cooldowns, cues — by composing Epic's GASToolsets/GameplayTagsToolset with Blueprint/Object tools and Python. Use when the user asks to add abilities, attributes, damage/buff effects, cooldowns, gameplay cues, or to inspect a live ASC.

Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Game Development. It works with Python. The repository describes itself as: Unreal Engine Vibe Coding tool. The licence is MIT.

When your agent uses it

The user asks to add abilities
Damage/buff effects
Inspect a live ASC

Example prompts

“/gas”

Requirements

Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit dc051be. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are python).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Gas loads about 1.8k tokens when it runs. Until then it costs about 91 tokens; SKILL.md has 599 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~91
When it runs · the whole SKILL.md, loaded when a task matches: ~1.8k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from kevinpbuckley/VibeUE at commit dc051be, republished under its MIT licence (© kevinpbuckley). 599 words, ~1,830 tokens.

Download SKILL.mdSave it as .claude/skills/gas/SKILL.md (or your agent's skills folder).

name: gas
description: Author and PIE-verify Gameplay Ability System content — abilities, attribute sets, gameplay effects, gameplay events, costs/cooldowns, cues — by composing Epic's GASToolsets/GameplayTagsToolset with Blueprint/Object tools and Python. Use when the user asks to add abilities, attributes, damage/buff effects, cooldowns, gameplay cues, or to inspect a live ASC.
display_name: Gameplay Ability System (GAS)
vibeue_classes: GameplayTagService, BlueprintService
unreal_classes: UAbilitySystemComponent, UGameplayAbility, UGameplayEffect, UAttributeSet, UAbilitySystemBlueprintLibrary
keywords: gameplay ability system, GAS, ability system component, ASC, attribute set, gameplay effect, gameplay event, gameplay cue, cooldown, cost

🧠 Brains complement: IF an unreal-engine-skills-manager tool (external MCP) exists in this session, call it with {action: "load", skill: "gameplay-ability-system"} for UE domain knowledge (ASC setup, attribute/effect/ability APIs, networking) — treat it as the rubric for any review / "best practices" question. If no such tool is available, skip this line entirely and proceed with this skill alone — do NOT attempt the call.

Gameplay Ability System Skill

Compose, do not duplicate. Everything GAS needs already exists across Epic's engine toolsets, the generic Blueprint/Object tools, and Python. VibeUE adds no GAS wrapper service; this skill is the routing map plus the live-verified gotchas.

Ownership matrix — who does what

Operation	Owner
Inspect a live ASC (PIE): attributes, active tags, active effects, granted abilities	Epic `GASToolsets.AbilitySystemInspectorToolset` → `GetAttributeValues` / `GetActiveTags` / `GetActiveEffects` / `GetGrantedAbilities`. Input is `{"actor": {"refPath": "<actor path>"}}` — works on PIE actors, no selection needed
Discover attribute set classes / attributes	Epic `GASToolsets.AttributeSetToolset` → `FindAttributeSetClasses` / `ListAttributes`
Gameplay Cue notify assets + cue tags	Epic `GASToolsets.GameplayCueToolset` (list/get/create/execute-on-selected)
Tag CRUD (add/remove/rename/list single tags)	Epic `GameplayTagsToolset` — see the `gameplay-tags` skill
Bulk tag registration, hierarchy queries, existence checks	`unreal.GameplayTagService` (VibeUE delta — see `gameplay-tags`)
Create GameplayAbility / GameplayEffect / AttributeSet Blueprint subclasses, CDO config	Epic `BlueprintTools` + `ObjectTools` (or native Python `BlueprintFactory` with the right `ParentClass`)
Ability / cue Blueprint graphs	Epic `BlueprintTools` + `unreal.BlueprintService.build_graph` (see `blueprint-graphs`)
GameplayEffect legacy tag containers (Asset/Target Tags)	`unreal.BlueprintService.set_property` — maps them onto the UE 5.3+ GE Components (VibeUE #539/#541)
Runtime PIE testing	`EditorToolset.EditorAppToolset` StartPIE/StopPIE + Python on live actors (below)
Native C++ attribute sets / effects / abilities	Coding-agent handoff — C++ patterns below are for that agent, not for editor tools

Python exposure facts (live-verified, UE 5.8)

UAbilitySystemBlueprintLibrary is exposed as unreal.AbilitySystemLibrary (the "BlueprintLibrary" name does not exist in Python). asc = unreal.AbilitySystemLibrary.get_ability_system_component(actor).
FGameplayTag cannot be constructed from raw Python: unreal.GameplayTag(tag_name=...) is rejected, TagName is read-only via set_editor_property, and GameplayTagLibrary.make_literal_gameplay_tag takes an FGameplayTag (circular). Use VibeUE's escape hatch: unreal.GameplayTagService.request_tag("A.B.C") returns the real registered tag VALUE (invalid tag for unknown names — check with GameplayTagLibrary.is_gameplay_tag_valid), and request_tag_container([...]) batches into a container. That unlocks every tag-typed API: asc.has_matching_gameplay_tag, send_gameplay_event_to_actor, assign_tag_set_by_caller_magnitude, tag-keyed TMap authoring, and tag queries. For pure READS the Epic inspector GetActiveTags also returns tag names as strings without needing tag values.
asc.get_owned_gameplay_tags() is NOT exposed. Use the inspector.
ASC BlueprintCallables that take a class work fine: asc.try_activate_ability_by_class(unreal.MyGA_Class) — this is the reliable Python path to drive abilities in PIE (it bypasses any component-level gates, which makes tests deterministic).
Multiple activations inside ONE execute_python_code call happen in the same frame — no timers tick and no GE durations expire between them. Exploit this to hit caps/lockouts deterministically instead of sleeping wall-clock time.

Show full SKILL.md (181 more words)Show less

PIE verification recipe (one round-trip per step)

python

import unreal, json
world = unreal.get_editor_subsystem(unreal.UnrealEditorSubsystem).get_game_world()
pawn = unreal.GameplayStatics.get_player_pawn(world, 0)
ref = json.dumps({"actor": {"refPath": pawn.get_path_name()}})
for tool in ["GetAttributeValues", "GetActiveTags", "GetActiveEffects", "GetGrantedAbilities"]:
    r = unreal.ToolsetRegistry.execute_tool("GASToolsets.AbilitySystemInspectorToolset", tool, ref)
    print(tool, r.get_value_as_json_string())
# drive an ability and re-inspect IN THE SAME CALL for deterministic assertions
asc = unreal.AbilitySystemLibrary.get_ability_system_component(pawn)
asc.try_activate_ability_by_class(unreal.MyGA_Fire)

Damage through the classic funnel also exercises GE pipelines when the project routes TakeDamage into effects: unreal.GameplayStatics.apply_damage(actor, 25.0, None, None, None).

C++ authoring gotchas (for the coding-agent handoff)

Never call UGameplayEffect::FindOrAddComponent/AddComponent in a GE constructor — they NewObject with an empty name, which fatal-asserts at CDO construction and kills the editor on module load. In constructors use CreateDefaultSubobject<UTargetTagsGameplayEffectComponent>(TEXT("TargetTags")), call SetAndApplyTargetTagChanges(...), then GEComponents.Add(...) (protected — do it inside the class).
SetByCaller cost/cooldown GEs: CommitAbility alone applies a 0-magnitude spec and logs a warning. Override ApplyCost/ApplyCooldown, build the spec with MakeOutgoingGameplayEffectSpec, SetSetByCallerMagnitude(tag, value), then ApplyGameplayEffectSpecToOwner.
AbilityTags is deprecated in 5.5+ — call SetAssetTags(container) in the constructor.
NonInstanced instancing is deprecated — default to InstancedPerActor.
UAbilitySystemGlobals::Get().InitGlobalData() must run once at startup (GameInstance::Init / AssetManager) or target data and montage prediction fail silently.
Set [/Script/GameplayAbilities.AbilitySystemGlobals] +GameplayCueNotifyPaths=/Game/GameplayCues in DefaultGame.ini, or the cue manager scans all of /Game/ (startup warning + cost).

Verification rules

After authoring: compile (unreal.BlueprintEditorLibrary.compile_blueprint), then prove behavior in PIE with the inspector — a successful tool call is not evidence. Attribute deltas, active-tag presence, and effect duration/stack readouts are the evidence to report.

Files

Just SKILL.md in Content/Skills/gas of kevinpbuckley/VibeUE.

Open the folder on GitHubat commit dc051be

Compare with similar skills

Gas next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Gas compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Gas this skillkevinpbuckley/VibeUE	730	—	~1.8k	Automated safety check: Pass	MIT	3 days ago
Image to Three.js Modelimg2threejs/img2threejs	18k	1 repos	~8.2k	Automated safety check: Pass	Apache-2.0	3 days ago
2D Map and Scene Generator0x0funky/agent-sprite-forge	4.4k	—	~2.9k	Automated safety check: Pass	MIT	4 days ago
Bambu Studio AIheyixuan2/bambu-studio-ai	223	—	~4.3k	Automated safety check: Pass	MIT	21 days ago
Spine AnimationGenielabsOpenSource/spine-animation-ai	521	—	~17k	Automated safety check: Pass	CC-BY-NC-4.0	1 mo ago
Unreal BridgeTornLux/UnrealBridge	306	—	~8.4k	Automated safety check: Notes	MIT	9 days ago

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Works with

Python

Questions about Gas

What does Gas do?

Author and PIE-verify Gameplay Ability System content — abilities, attribute sets, gameplay effects, gameplay events, costs/cooldowns, cues — by composing Epic's GASToolsets/GameplayTagsToolset with…. Gas is an agent skill from kevinpbuckley/VibeUE. Author and PIE-verify Gameplay Ability System content — abilities, attribute sets, gameplay effects, gameplay events, costs/cooldowns, cues — by composing Epic's GASToolsets/GameplayTagsToolset with Blueprint/Object tools and Python.

When should I use Gas?

Gas fits situations like: the user asks to add abilities; damage/buff effects; inspect a live ASC.

How do I install Gas in Claude Code?

Run `npx skills add kevinpbuckley/VibeUE --skill gas -a claude-code`. Or copy the skill folder (Content/Skills/gas in kevinpbuckley/VibeUE) into .claude/skills/gas in your project. Claude Code loads it when a task matches its description.

How do I install Gas in Codex?

Run `npx skills add kevinpbuckley/VibeUE --skill gas -a codex`. Or copy the skill folder (Content/Skills/gas in kevinpbuckley/VibeUE) into .agents/skills/gas in your project. Codex loads it when a task matches its description.

Can I use Gas in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add kevinpbuckley/VibeUE --skill gas -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gas, .gemini/skills/gas, .github/skills/gas and .opencode/skills/gas in your project.

What does Gas need to run?

SKILL.md names no scripts, command-line tools or credentials: Gas is instructions for the agent only. Our summary lists: Python 3.

Does Gas access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Gas safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Gas use?

Gas is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Gas use?

About 1.8k tokens (SKILL.md is roughly 7.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Gas?

Skills that share tags, products or a category with Gas: Image to Three.js Model (img2threejs/img2threejs, 18k stars), 2D Map and Scene Generator (0x0funky/agent-sprite-forge, 4.4k stars), Bambu Studio AI (heyixuan2/bambu-studio-ai, 223 stars) and Spine Animation (GenielabsOpenSource/spine-animation-ai, 521 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Gas?

kevinpbuckley (a GitHub user) maintains it in kevinpbuckley/VibeUE, which has 730 GitHub stars. The repository holds 39 skills in this directory. The repository was last updated on October 7, 2026.

Source: kevinpbuckley/VibeUE on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Gas

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Gameplay Ability System Skill

Ownership matrix — who does what

Python exposure facts (live-verified, UE 5.8)

PIE verification recipe (one round-trip per step)

C++ authoring gotchas (for the coding-agent handoff)

Verification rules

Files

Compare with similar skills

Similar skills

More from kevinpbuckley/VibeUE

Related

Questions about Gas