Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/toolboxmd/karpathy-wikinpx agentmods add skills/toolboxmd/karpathy-wiki/karpathy-wiki-captureWrote 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-capture)<a href="https://agentmods.dev/skills/toolboxmd/karpathy-wiki/karpathy-wiki-capture"><img src="https://agentmods.dev/badge/skills/toolboxmd/karpathy-wiki/karpathy-wiki-capture/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-capture"><img src="https://agentmods.dev/badge/skills/toolboxmd/karpathy-wiki/karpathy-wiki-capture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00063 | $0.01912 |
| Opus 5 | $0.00032 | $0.00956 |
| Sonnet 5 | $0.00013 | $0.00382 |
| Haiku 4.5 | $0.00006 | $0.00191 |
Grade A, and why
karpathy-wiki-capture scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.
karpathy-wiki capture
You loaded this skill because a TRIGGER fired (per the loader). Your job
is to write a capture file (or move a file into inbox/ for raw-direct
ingest), then return to the user's task.
Single capture entry point
All chat-driven captures go through ONE command:
echo "$BODY" | bin/wiki capture \
--title "<one-line title>" \
--kind chat-only \
--suggested-action create|update|augment
For chat-attached (a real file accompanies the conversation), pass the
absolute path of that file via --evidence-path:
echo "$BODY" | bin/wiki capture \
--title "<one-line title>" \
--kind chat-attached \
--suggested-action create|update|augment \
--evidence-path /absolute/path/to/source/file.ext
Or for long bodies:
bin/wiki capture \
--title "<one-line title>" \
--kind chat-only \
--suggested-action create \
--body-file /tmp/body.md
--evidence-path is REQUIRED for --kind chat-attached and
--kind raw-direct, REJECTED for --kind chat-only. The path lands
verbatim in the capture's evidence: frontmatter and propagates to
the manifest's origin field — the iron-rule contract that lets the
ingester trace every wiki page back to its source.
bin/wiki capture handles wiki resolution (which wiki the capture goes
to), prompts the user for setup if needed, writes every capture file,
and asks the bounded dispatcher to drain the target queue. You do NOT
write to .wiki-pending/ directly or launch a provider yourself.
Trigger
Triggers are listed in the loader (using-karpathy-wiki/SKILL.md).
This skill assumes a trigger has fired and you're now writing.
Capture file format
See references/capture-schema.md for the canonical frontmatter
schema. Key fields you set when invoking bin/wiki capture:
--title: one-line title (becomes filename slug + capture title).--kind:chat-only(no file evidence) |chat-attached(file + conversation delta) |raw-direct(you do NOT write this; it's for drop-zone ingestion).--suggested-action:create(new page) |update(replace existing) |augment(add to existing).
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 185 lines · 63 tokens per session scan A 49077ee21b6d
karpathy-wiki-capture is a skill published in the GitHub repository toolboxmd/karpathy-wiki (103 stars, last pushed 14d ago), licensed MIT. It adds 63 tokens to every session and 1,912 once invoked, about $0.0003 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 2026-08-30.
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