jakubkrehel/skills is a collection of agent skills for improving user interfaces, covering areas such as typography, color, accessibility, layout, and product writing. It helps coding agents build or review interface designs. The catalogue entries are the project's own workflow modules for these tasks.
Borrowing it
Nothing to install: this file belongs to jakubkrehel/skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/jakubkrehel/skills/main/AGENTS.mdgit clone --depth 1 https://github.com/jakubkrehel/skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/jakubkrehel/skills/agents-md)<a href="https://agentmods.dev/instructions/jakubkrehel/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/jakubkrehel/skills/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/jakubkrehel/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/jakubkrehel/skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.03758 | $0.03758 |
| Opus 5.5 | $0.01503 | $0.01503 |
| Sonnet 5.5 | $0.00752 | $0.00752 |
| Haiku 4.5 | $0.00376 | $0.00376 |
Grade A, and why
skills AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file is the single source of guidance for coding agents working in this repository. CLAUDE.md imports it and adds nothing but Claude Code specifics, so put repository facts here and do not maintain a second copy.
What this repository is
A collection of agent skills for building great product interfaces (typography, colors, UI polish), distributed two ways: via npx skills add jakubkrehel/skills and as the Claude Code plugin interfaces served by the marketplace in this same repository. It is primarily documentation, with reusable drawing assets and helper scripts under teardown. There is no repository-wide build, lint or test tooling.
teardown carries its own checks. After changing anything under its assets/ or scripts/, run every node scripts/test-*.cjs from that skill's directory. Then proof a few existing models with scripts/proof.cjs and look at the PNGs, since the tests cannot judge linework.
.claude-plugin/plugin.json and .claude-plugin/marketplace.json define the plugin and its marketplace. Both are named interfaces, so plugin users invoke skills as /interfaces:better-interface while skills-CLI users invoke /better-interface. Skills are discovered from skills/ automatically, so adding a skill needs no manifest change. Bump version in plugin.json in the same commit as any change under skills/. That number is the only signal plugin users update on. claude plugin update compares it and nothing else, so a change shipped without a bump reports "already at the latest version" and never reaches them. Run claude plugin validate . and claude plugin validate .claude-plugin/plugin.json after touching either manifest.
opencode.json registers skills/ under skills.paths so opencode loads the collection while this repository itself is open, which is for working on the skills rather than distributing them. opencode users install through the skills CLI's opencode target, and opencode exposes every discovered skill as a slash command on its own, so this repository carries no opencode command wrappers.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago Changed · -4 tokens per session b016fd3bfda8
- 4d ago Changed · +2 lines · +70 tokens per session 9026929bcf98
- 15d ago Changed · +2 lines · +99 tokens per session e1bddc309566
- 22d ago Changed · +8 lines · +504 tokens per session 7ada6aeb4114
- 2mo ago First seen · 97 lines · 3,089 tokens per session scan A 4439be71e6c4
skills AGENTS.md is an instructions file published in the GitHub repository jakubkrehel/skills (8,988 stars, last pushed 4d ago), licensed MIT. It adds 3,758 tokens to every session, about $0.0150 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.