Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add ishandutta2007/claude-skills-by-karpathy --skill simplicity-firstgit clone --depth 1 https://github.com/ishandutta2007/claude-skills-by-karpathyWrote 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/skills/ishandutta2007/claude-skills-by-karpathy/simplicity-first)<a href="https://agentmods.dev/skills/ishandutta2007/claude-skills-by-karpathy/simplicity-first"><img src="https://agentmods.dev/badge/skills/ishandutta2007/claude-skills-by-karpathy/simplicity-first/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/skills/ishandutta2007/claude-skills-by-karpathy/simplicity-first"><img src="https://agentmods.dev/badge/skills/ishandutta2007/claude-skills-by-karpathy/simplicity-first.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 | $0.00037 | $0.00166 |
| Opus 5 | $0.00018 | $0.00083 |
| Sonnet 5 | $0.00007 | $0.00033 |
| Haiku 4.5 | $0.00004 | $0.00017 |
Grade A, and why
claude-skill-simplicity-first 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 12d 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.
What it actually says
Simplicity First (Claude Skill)
Minimum code that solves the problem. Nothing speculative.
- No features beyond what was asked. Avoid "just-in-case" logic.
- No abstractions for single-use code. Keep it flat and readable.
- No speculative flexibility. Don't build for hypothetical future needs.
- No error handling for impossible scenarios. Avoid bloat.
- If 200 lines could be 50, rewrite it.
The test: Would a senior engineer say this is overcomplicated? If yes, simplify.
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.
- 12d ago First seen · 18 lines · 37 tokens per session scan A 380d2cf3df09
claude-skill-simplicity-first is a skill published in the GitHub repository ishandutta2007/claude-skills-by-karpathy (7 stars, last pushed 12d ago), licensed MIT. It adds 37 tokens to every session and 166 once invoked, about $0.0002 per session on Opus 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 2026-08-31.
Other skills, from other repositories
prompt-master
Generates optimized prompts for AI tools. Activates only when the user explicitly asks to write, fix, improve, or adapt a prompt for a specific AI tool (LLM, Cursor, Midjourney, image AI, video AI, coding agents, etc.). Does not activate for general conversation, coding tasks, document writing, or other…
api-tester
A tool for creating and checking API tests from the real API contract and implementation. An API is the agreed way that software sends requests and receives responses.
dep-auditor
A read-only audit of a project’s third-party packages for known security issues, version health, and license facts. It uses the versions actually selected by lockfiles, which record the exact packages installed, rather than relying only on version ranges.
skill-curator
A Chinese-language evaluator for deciding whether developer tools and agent resources are suitable for a curated collection. It checks real repositories, installation paths, activity, duplicates, and security boundaries using evidence.
git-workflow
A guide for handling Git repository work safely, including status checks, branches, commits, pushes, pull requests, and rebasing. Git is a version-control system that records code changes and coordinates work between developers.
zh-readme
A tool for writing README files in Chinese after first examining a software project. A README is the main guide visitors see when they open a code repository.