Agent skill

Corner Diagonals

Apply diagonal-cut corners and chamfered edges to buttons, cards, panels, and container shells.

Apache-2.0Auto-check passed

Install Corner Diagonals

skills CLI

$ npx skills add boraoztunc/skills --skill corner-diagonals -a claude-code

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

GitHub CLI

$ gh skill install boraoztunc/skills corner-diagonals --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/boraoztunc/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/corner-diagonals .claude/skills/corner-diagonals && 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 "corner-diagonals" agent skill from https://github.com/boraoztunc/skills/tree/main/corner-diagonals into .claude/skills/corner-diagonals/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corner-diagonals", 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/boraoztunc/skills/tree/main/corner-diagonals

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 boraoztunc/skills --skill corner-diagonals -a codex

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

GitHub CLI

$ gh skill install boraoztunc/skills corner-diagonals --agent codex

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

Manual copy

$ git clone --depth 1 https://github.com/boraoztunc/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/corner-diagonals .agents/skills/corner-diagonals && 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 "corner-diagonals" agent skill from https://github.com/boraoztunc/skills/tree/main/corner-diagonals into .agents/skills/corner-diagonals/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corner-diagonals", 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 boraoztunc/skills --skill corner-diagonals -a cursor

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

GitHub CLI

$ gh skill install boraoztunc/skills corner-diagonals --agent cursor

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

Manual copy

$ git clone --depth 1 https://github.com/boraoztunc/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/corner-diagonals .cursor/skills/corner-diagonals && 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 "corner-diagonals" agent skill from https://github.com/boraoztunc/skills/tree/main/corner-diagonals into .cursor/skills/corner-diagonals/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corner-diagonals", 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/boraoztunc/skills.git --path corner-diagonals

--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 boraoztunc/skills --skill corner-diagonals -a gemini-cli

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

GitHub CLI

$ gh skill install boraoztunc/skills corner-diagonals --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/boraoztunc/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/corner-diagonals .gemini/skills/corner-diagonals && 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 "corner-diagonals" agent skill from https://github.com/boraoztunc/skills/tree/main/corner-diagonals into .gemini/skills/corner-diagonals/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corner-diagonals", 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 boraoztunc/skills corner-diagonals

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 boraoztunc/skills --skill corner-diagonals -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/boraoztunc/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/corner-diagonals .github/skills/corner-diagonals && 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 "corner-diagonals" agent skill from https://github.com/boraoztunc/skills/tree/main/corner-diagonals into .github/skills/corner-diagonals/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corner-diagonals", 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 boraoztunc/skills --skill corner-diagonals -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 boraoztunc/skills corner-diagonals --agent opencode

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

Manual copy

$ git clone --depth 1 https://github.com/boraoztunc/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/corner-diagonals .opencode/skills/corner-diagonals && 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 "corner-diagonals" agent skill from https://github.com/boraoztunc/skills/tree/main/corner-diagonals into .opencode/skills/corner-diagonals/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corner-diagonals", 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: corner-diagonals
GitHub stars: 398
Used in: 2 other repos
Token cost: ~1.4k tokens
SKILL.md length: 348 words
Files: 1
Skills in repo: 52
Repo updated: Aug 15, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Apply diagonal-cut corners and chamfered edges to buttons, cards, panels, and container shells.

A design needs precise geometric framing
SKILL.md covers Scope, Visual Target, Cut Tokens and Core Shapes, plus 7 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Sci-fi UI surfaces

What it does

Corner Diagonals is an agent skill from boraoztunc/skills. Apply diagonal-cut corners and chamfered edges to buttons, cards, panels, and container shells. Use when a design needs precise geometric framing, sci-fi UI surfaces, clipped-corner controls, or engineered sharp containers instead of rounded pills or plain rectangles.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Claude Code skills for copywriting, SEO, design, and more. The licence is Apache-2.0.

When your agent uses it

A design needs precise geometric framing
Sci-fi UI surfaces
Clipped-corner controls
Engineered sharp containers instead of rounded pills

Example prompts

“/corner-diagonals”

What it can do on your machine

Read from SKILL.md and the folder at commit 645553c. 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 css and html).
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

Corner Diagonals loads about 1.4k tokens when it runs. Until then it costs about 71 tokens; SKILL.md has 348 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~71
When it runs · the whole SKILL.md, loaded when a task matches: ~1.4k

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 boraoztunc/skills at commit 645553c, republished under its Apache-2.0 licence (© boraoztunc). 348 words, ~1,387 tokens.

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

name: corner-diagonals
description: Apply diagonal-cut corners and chamfered edges to buttons, cards, panels, and container shells. Use when a design needs precise geometric framing, sci-fi UI surfaces, clipped-corner controls, or engineered sharp containers instead of rounded pills or plain rectangles.

Corner Diagonals

Scope

Apply only to buttons, cards, panels, and container shells.
Use when surfaces need diagonal-cut corners or chamfered edges.
Keep the hit area readable and usable even when the visual shape is clipped.
Reuse the same corner logic across surfaces so it feels like a system.

Visual Target

Diagonal cuts should feel engineered, sharp, and intentional.
Cuts stay subtle and proportional to the component size.
One or more corners can be chamfered, but the silhouette should still read quickly.
Use diagonal corners as a repeated structural motif, not a one-off trick.

Cut Tokens

css

:root {
  --corner-cut-sm: 8px;
  --corner-cut-md: 14px;
  --corner-cut-lg: 24px;
  --corner-line: rgba(255, 255, 255, 0.18);
  --corner-line-strong: rgba(255, 255, 255, 0.34);
  --corner-fill: rgba(10, 14, 24, 0.82);
  --corner-accent: #8b5cf6;
}

Core Shapes

Use clip-path: polygon(...) for true diagonal silhouettes.

css

.cut-all {
  --cut: var(--corner-cut-md);
  clip-path: polygon(
    var(--cut) 0,
    calc(100% - var(--cut)) 0,
    100% var(--cut),
    100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%,
    var(--cut) 100%,
    0 calc(100% - var(--cut)),
    0 var(--cut)
  );
}

.cut-top-left-bottom-right {
  --cut: var(--corner-cut-md);
  clip-path: polygon(
    var(--cut) 0,
    100% 0,
    100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%,
    0 100%,
    0 var(--cut)
  );
}

.cut-top-right-bottom-left {
  --cut: var(--corner-cut-md);
  clip-path: polygon(
    0 0,
    calc(100% - var(--cut)) 0,
    100% var(--cut),
    100% 100%,
    var(--cut) 100%,
    0 100%,
    0 0
  );
}

Bordered Shell

For bordered surfaces, use an outer wrapper and inner surface with the same polygon.

css

.cut-shell {
  --cut: var(--corner-cut-md);
  --border-size: 1px;
  position: relative;
  padding: var(--border-size);
  background: linear-gradient(135deg, var(--corner-line-strong), transparent 46%, var(--corner-line));
  clip-path: polygon(
    var(--cut) 0,
    100% 0,
    100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%,
    0 100%,
    0 var(--cut)
  );
}

.cut-shell__inner {
  min-height: 100%;
  padding: clamp(16px, 2.4vw, 28px);
  background: var(--corner-fill);
  clip-path: inherit;
}

html

<section class="cut-shell">
  <div class="cut-shell__inner">
    ...
  </div>
</section>

Button Pattern

css

.cut-button {
  --cut: var(--corner-cut-sm);
  position: relative;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 0;
  color: white;
  background: linear-gradient(135deg, var(--corner-accent), color-mix(in srgb, var(--corner-accent), black 28%));
  clip-path: polygon(
    var(--cut) 0,
    100% 0,
    100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%,
    0 100%,
    0 var(--cut)
  );
}

.cut-button:hover {
  filter: brightness(1.08);
}

.cut-button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--corner-accent), white 45%);
  outline-offset: 3px;
}

Secondary Button

Use a darker shell with diagonal outline treatment.

css

.cut-button-secondary {
  --cut: var(--corner-cut-sm);
  color: white;
  background:
    linear-gradient(var(--corner-fill), var(--corner-fill)) padding-box,
    linear-gradient(135deg, var(--corner-line-strong), transparent 58%, var(--corner-accent)) border-box;
  border: 1px solid transparent;
  clip-path: polygon(
    var(--cut) 0,
    100% 0,
    100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%,
    0 100%,
    0 var(--cut)
  );
}

Recommended Patterns

Primary buttons: clipped hex-like or chamfered rectangles with one consistent cut amount.
Secondary buttons: dark shells with diagonal outline treatment and restrained hover fill.
Cards and panels: thin framed containers with one or two diagonal corners.
Large sections: diagonal-corner inner blocks nested inside straight outer frames for hierarchy.
Mirrored pairings: top-left plus bottom-right, or top-right plus bottom-left.

Tuning Knobs

Cut size: 6px-10px for small controls, 12px-18px for cards, 20px-32px for large panels.
Border treatment: use a thin stroke, gradient shell, or inset line to make the silhouette legible.
Consistency: reuse the same polygon family across buttons and containers.
Accent: reserve bright color for primary controls, hover borders, or focal states.
Motion: brighten fills, reveal borders, or slide overlays; keep the shape stable.

Avoid

Random cut sizes across similar components.
Aggressive clipping that harms readability or makes the component feel broken.
Mixing rounded pills and chamfered geometry without clear hierarchy.
Clipping only the background while borders and hit areas stay rectangular.
Flooding every diagonal surface with a bright accent color.

Quick Checks

Border, background, and hit area follow the same diagonal geometry.
Text still has comfortable horizontal padding after the cut.
Buttons keep at least 44px height for touch targets.
Repeated components use the same --cut scale.
Focus states remain visible around the clipped shape.

Files

Just SKILL.md in corner-diagonals of boraoztunc/skills.

Open the folder on GitHubat commit 645553c

Used in 2 other repositories

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 2 other GitHub owners. This page covers the copy in boraoztunc/skills, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Corner Diagonals 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.

Corner Diagonals compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Corner Diagonals this skillboraoztunc/skills	398	2 repos	~1.4k	Automated safety check: Pass	Apache-2.0	1 mo ago
Card Xiaohongshunexu-io/open-design	100k	—	~402	Automated safety check: Pass	Apache-2.0	today
Token Cardaffaan-m/ECC	276k	—	~1.3k	Automated safety check: Pass	MIT	today
Dce Edgevercel/next.js	143k	—	~1k	Automated safety check: Pass	MIT	today
Orbit Cardheygen-com/hyperframes	60k	1 repos	~887	Automated safety check: Pass	Apache-2.0	today
Cardly AutomationComposioHQ/awesome-claude-skills	77k	3 repos	~727	Automated safety check: Pass	None	22 days ago

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Questions about Corner Diagonals

What does Corner Diagonals do?

Apply diagonal-cut corners and chamfered edges to buttons, cards, panels, and container shells. Corner Diagonals is an agent skill from boraoztunc/skills. Apply diagonal-cut corners and chamfered edges to buttons, cards, panels, and container shells.

When should I use Corner Diagonals?

Corner Diagonals fits situations like: A design needs precise geometric framing; sci-fi UI surfaces; clipped-corner controls; engineered sharp containers instead of rounded pills.

How do I install Corner Diagonals in Claude Code?

Run `npx skills add boraoztunc/skills --skill corner-diagonals -a claude-code`. Or copy the skill folder (corner-diagonals in boraoztunc/skills) into .claude/skills/corner-diagonals in your project. Claude Code loads it when a task matches its description.

How do I install Corner Diagonals in Codex?

Run `npx skills add boraoztunc/skills --skill corner-diagonals -a codex`. Or copy the skill folder (corner-diagonals in boraoztunc/skills) into .agents/skills/corner-diagonals in your project. Codex loads it when a task matches its description.

Can I use Corner Diagonals 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 boraoztunc/skills --skill corner-diagonals -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/corner-diagonals, .gemini/skills/corner-diagonals, .github/skills/corner-diagonals and .opencode/skills/corner-diagonals in your project.

What does Corner Diagonals need to run?

SKILL.md names no scripts, command-line tools or credentials: Corner Diagonals is instructions for the agent only.

Does Corner Diagonals 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 Corner Diagonals 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 Corner Diagonals use?

Corner Diagonals is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Corner Diagonals use?

About 1.4k tokens (SKILL.md is roughly 5.5k 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 Corner Diagonals?

Skills that share tags, products or a category with Corner Diagonals: Card Xiaohongshu (nexu-io/open-design, 100k stars), Token Card (affaan-m/ECC, 276k stars), Dce Edge (vercel/next.js, 143k stars) and Orbit Card (heygen-com/hyperframes, 60k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Corner Diagonals?

boraoztunc (a GitHub user) maintains it in boraoztunc/skills, which has 398 GitHub stars. The repository holds 52 skills in this directory. The repository was last updated on August 15, 2026.

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

Install Corner Diagonals

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Corner Diagonals

Scope

Visual Target

Cut Tokens

Core Shapes

Bordered Shell

Button Pattern

Secondary Button

Recommended Patterns

Tuning Knobs

Avoid

Quick Checks

Files

Used in 2 other repositories

Compare with similar skills

Similar skills

More from boraoztunc/skills

Questions about Corner Diagonals