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 toolboxmd/karpathy-wiki --skill karpathy-wiki-readgit clone --depth 1 https://github.com/toolboxmd/karpathy-wikiWrote 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/toolboxmd/karpathy-wiki/karpathy-wiki-read)<a href="https://agentmods.dev/skills/toolboxmd/karpathy-wiki/karpathy-wiki-read"><img src="https://agentmods.dev/badge/skills/toolboxmd/karpathy-wiki/karpathy-wiki-read/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/toolboxmd/karpathy-wiki/karpathy-wiki-read"><img src="https://agentmods.dev/badge/skills/toolboxmd/karpathy-wiki/karpathy-wiki-read.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 75 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Output Handling · line 89 Output size or generation rate is not bounded. Unbounded output enables denial-of-service through resource exhaustion, log flooding, or context-window stuffing.Fix: Set explicit limits on output length, generation count, and rate. Use max_tokens and truncation to prevent unbounded output.
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 | $0.00084 | $0.01758 |
| Opus 5.5 | $0.00034 | $0.00703 |
| Sonnet 5.5 | $0.00017 | $0.00352 |
| Haiku 4.5 | $0.00008 | $0.00176 |
Grade A, and why
karpathy-wiki-read 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 2mo 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 — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.
karpathy-wiki read
You loaded this skill because the user asked a question (per Iron Rule 4 in the loader: NO ANSWERING ANY USER QUESTION WITHOUT ORIENTING FIRST). Your job is to determine whether the wiki covers the answer, retrieve the coverage, and either cite-and-answer from the wiki or fall through to web search — without ever pre-classifying the question as "wiki-irrelevant."
The 6-step ladder
Every step is deterministic. There is no agent judgement at branch points; each branch is gated on a counted or boolean condition.
Step A.0: Unconfigured workspace
If no wiki root resolves because workspace routing is unconfigured, do not
silently choose or initialize one. Skip the impossible schema/index reads and
continue directly at Step F. After answering, follow the required capture flow.
The capture skill is the sole owner of orphan preservation and the project,
main, or both question. Do not add a second setup prompt here.
Malformed or incomplete configured routing is an error, not this branch.
Step A — Orient
Read these files in order:
<wiki>/schema.md— taxonomy, conventions, thresholds.- The relevant
<wiki>/<category>/_index.mdfor the question's apparent topic. If the question crosses categories or you cannot tell which category applies, read<wiki>/index.md(the root MOC).
If you have already oriented earlier in this session, skip to Step B — the schema and index content are already in your working memory. Orientation is once per session.
Step B — Count signal-matching candidates
Extract the question's signal terms: meaningful nouns, proper-noun phrases, technical terms, version numbers, tool names. Skip stopwords ("the", "what", "how", "do", "is").
Walk the relevant _index.md (already in memory from Step A). For each term, count how many entries it substring-matches (case-insensitive) in the title, the one-liner, or the tag list on that line. A term that hits 6 or more entries is a common term (the Explore band). Other hitting terms are rare terms. Do not keep a denylist of tag names; frequency on this index is the only test.
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.
- 2mo ago First seen · 130 lines · 84 tokens per session scan A 704e88992ef5
karpathy-wiki-read is a skill published in the GitHub repository toolboxmd/karpathy-wiki (105 stars, last pushed 19d ago), licensed MIT. It adds 84 tokens to every session and 1,758 once invoked, about $0.0003 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.
karpathy-wiki-read compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| karpathy-wiki-readtoolboxmd/karpathy-wiki | Skill | 105 | 19d ago | MIT | A | 84 | Claude Code |
| imagegenopenai/codex | Skill | 133k | yesterday | Apache-2.0 | A | 113 | Codex |
| playwright-climicrosoft/playwright | Skill | 99k | yesterday | Apache-2.0 | A | 19 | Claude Code |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | 4d ago | MIT | A | 200 | Claude Code, Codex |
| systematic-debuggingobra/superpowers | Skill | 313k | 3d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 95 | Claude Code |
| next-partial-prefetching-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 103 | Claude Code |