Direct Proving
frenzymath/Danus
Screen a decomposition plan by first trying to prove all of its subgoals directly, then identifying the key stuck points if the plan does not fully go through.
Prove and formalize the chosen direction with only needed type roles and components.
MITAuto-check passed
Install System
$ npx skills add 3x-haust/oh-my-design --skill system -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install 3x-haust/oh-my-design system --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/3x-haust/oh-my-design.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/system .claude/skills/system && rm -rf skills-srcUse ~/.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/
Install the "system" agent skill from https://github.com/3x-haust/oh-my-design/tree/main/skills/system into .claude/skills/system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system", 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 install https://github.com/3x-haust/oh-my-design/tree/main/skills/systemType 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.
$ npx skills add 3x-haust/oh-my-design --skill system -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install 3x-haust/oh-my-design system --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/3x-haust/oh-my-design.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/system .agents/skills/system && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "system" agent skill from https://github.com/3x-haust/oh-my-design/tree/main/skills/system into .agents/skills/system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system", 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.
$ npx skills add 3x-haust/oh-my-design --skill system -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install 3x-haust/oh-my-design system --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/3x-haust/oh-my-design.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/system .cursor/skills/system && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "system" agent skill from https://github.com/3x-haust/oh-my-design/tree/main/skills/system into .cursor/skills/system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system", 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 https://github.com/3x-haust/oh-my-design.git --path skills/system--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add 3x-haust/oh-my-design --skill system -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install 3x-haust/oh-my-design system --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/3x-haust/oh-my-design.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/system .gemini/skills/system && rm -rf skills-srcUse ~/.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/
Install the "system" agent skill from https://github.com/3x-haust/oh-my-design/tree/main/skills/system into .gemini/skills/system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system", 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.
$ gh skill install 3x-haust/oh-my-design systemInstalls 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).
$ npx skills add 3x-haust/oh-my-design --skill system -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/3x-haust/oh-my-design.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/system .github/skills/system && rm -rf skills-srcUse ~/.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/
Install the "system" agent skill from https://github.com/3x-haust/oh-my-design/tree/main/skills/system into .github/skills/system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system", 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.
$ npx skills add 3x-haust/oh-my-design --skill system -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install 3x-haust/oh-my-design system --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/3x-haust/oh-my-design.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/system .opencode/skills/system && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "system" agent skill from https://github.com/3x-haust/oh-my-design/tree/main/skills/system into .opencode/skills/system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system", 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
system- GitHub stars
- 198
- Token cost
- ~276 tokens
- SKILL.md length
- 120 words
- Files
- 2
- Skills in repo
- 10
- Repo updated
- First seen
- Licence
- MIT
At a glance
Prove and formalize the chosen direction with only needed type roles and components.
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
System is an agent skill from 3x-haust/oh-my-design. Prove and formalize the chosen direction with only needed type roles and components.
Its SKILL.md is about 280 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
The repository describes itself as: Design cognition loop for Codex, Claude Code, and Pi-compatible agents — frame, diverge, see, reframe. The licence is MIT.
Example prompts
- “/system”
What it can do on your machine
Read from SKILL.md and the folder at commit f6a2144. 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.
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
System loads about 276 tokens when it runs. Until then it costs about 23 tokens; SKILL.md has 120 words of instructions outside code blocks.
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 3x-haust/oh-my-design at commit f6a2144, republished under its MIT licence (© 3x-haust). 120 words, ~276 tokens.
Download SKILL.mdSave it as
.claude/skills/system/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- system
- description
- Prove and formalize the chosen direction with only needed type roles and components.
Selected system
Read the current type/composition brief, chosen representative and effective tokens. Typesetter proves real/dynamic content in actual containers; Composer maps needed components and every surface/state/view. Deliver actual existing-system material, selected whole-screen references and Scout analysis to makers, not blind reviewers.
Use tokens check and, for genuine additions, schema token-extensions then tokens extend. Base tokens/aliases/text styles remain immutable; renamed equivalents are not an override loophole. New roles need actual component/state users. No speculative library or repeated direction approval for lawful additions.
Owners publish their Measurement contracts and current proof/composition bindings, then run the named checks. Changed selected content/tokens/relationship stales choice; affected downstream additions re-prove only their actual scope. Continue through stage next into full expansion, preserving debt and real blockers.
© 3x-haust, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in skills/system of 3x-haust/oh-my-design.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit f6a2144
Compare with similar skills
System 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| System this skill3x-haust/oh-my-design | 198 | — | ~276 | Automated safety check: Pass | MIT | |
| Direct Provingfrenzymath/Danus | 476 | — | ~1.3k | Automated safety check: Pass | Apache-2.0 | |
| Direction Pickernexu-io/open-design | 100k | — | ~472 | Automated safety check: Warn | Apache-2.0 | |
| Frontend Design Directionaffaan-m/ECC | 276k | 1 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Direction Attributethedaviddias/Front-End-Checklist | 74k | — | ~534 | Automated safety check: Pass | MIT | |
| Aria Rolesthedaviddias/Front-End-Checklist | 74k | — | ~515 | Automated safety check: Pass | MIT |
Similar skills
Direction Picker
nexu-io/open-design
Resolves the visual direction at the plan stage from the brief and design system, without asking the user.
Frontend Design Direction
affaan-m/ECC
Set an ECC-specific frontend design direction for production UI work.
Direction Attribute
thedaviddias/Front-End-Checklist
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Set text direction for RTL languages.
Aria Roles
thedaviddias/Front-End-Checklist
A skill your agent uses when reviewing rendered HTML, interactive components, or design-system patterns related to Use valid ARIA role values.
Building Role Mining For Rbac Optimization
mukul975/Anthropic-Cybersecurity-Skills
Apply bottom-up and top-down role mining techniques, including clustering algorithms and formal concept analysis, to discover optimal RBAC roles from existing user-permission assignments…
More from 3x-haust/oh-my-design
All 10 skills in this repoFigma
3x-haust/oh-my-design
Implement an already chosen Figma target faithfully while verifying unrepresented behavior, states and responsive gaps.
Ultradesign
3x-haust/oh-my-design
Design and implement the requested scope through real references, representative direction choice and measured review.
Audit
3x-haust/oh-my-design
Audit current renders and stress coverage, repair real defects and stop under the bound refinement policy.
Coach
3x-haust/oh-my-design
Interpret recurring measured findings and honest trends without turning taste into a skill score.
Concepts
3x-haust/oh-my-design
Dispatch the existing candidate-generation stage from minimal tokens to one authentic direction choice.
Critique
3x-haust/oh-my-design
Review actual current design evidence and rank observable problems without implementing changes.
Questions about System
What does System do?
Prove and formalize the chosen direction with only needed type roles and components. System is an agent skill from 3x-haust/oh-my-design. Prove and formalize the chosen direction with only needed type roles and components.
How do I install System in Claude Code?
Run `npx skills add 3x-haust/oh-my-design --skill system -a claude-code`. Or copy the skill folder (skills/system in 3x-haust/oh-my-design) into .claude/skills/system in your project. Claude Code loads it when a task matches its description.
How do I install System in Codex?
Run `npx skills add 3x-haust/oh-my-design --skill system -a codex`. Or copy the skill folder (skills/system in 3x-haust/oh-my-design) into .agents/skills/system in your project. Codex loads it when a task matches its description.
Can I use System 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 3x-haust/oh-my-design --skill system -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/system, .gemini/skills/system, .github/skills/system and .opencode/skills/system in your project.
What does System need to run?
SKILL.md names no scripts, command-line tools or credentials: System is instructions for the agent only.
Does System 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 System 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 System use?
System 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 System use?
About 276 tokens (SKILL.md is roughly 1.1k 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 System?
Skills that share tags, products or a category with System: Direct Proving (frenzymath/Danus, 476 stars), Direction Picker (nexu-io/open-design, 100k stars), Frontend Design Direction (affaan-m/ECC, 276k stars) and Direction Attribute (thedaviddias/Front-End-Checklist, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains System?
3x-haust (a GitHub user) maintains it in 3x-haust/oh-my-design, which has 198 GitHub stars. The repository holds 10 skills in this directory. The repository was last updated on October 5, 2026.
Source: 3x-haust/oh-my-design on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.