karpathy-wiki: Instructions file for Claude Code

AGENTS.md

karpathy-wiki AGENTS.md is an instructions file for Claude Code, Codex, OpenCode from toolboxmd/karpathy-wiki. It costs 919 tokens per session, scanned A, original, MIT.

Project instructions for contributing to karpathy-wiki, including planning handoffs, project tracking files, and recent changes. A project ledger is a set of files that records work, known problems, and ideas.

In plain words
What is it for?
Use it when modifying karpathy-wiki, especially around test policy, planning documents, ledger files, ingestion, or wiki maintenance.
Why use it?
It prevents contributors and agents from changing tests or project records without following the repository's current process.

Instructions file for Claude CodeCodexOpenCode

Written for Claude Code and Codex and OpenCode: SessionStart hook event, but also the file is AGENTS.md. Also seen: mentions Claude Code; mentions Codex.

This is toolboxmd/karpathy-wiki's own configuration. It tells Claude Code, Codex and OpenCode how to work on karpathy-wiki itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything karpathy-wiki configures →

Reuse

Borrowing it

Nothing to install: this file belongs to toolboxmd/karpathy-wiki. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/toolboxmd/karpathy-wiki/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/toolboxmd/karpathy-wiki

Made for: Claude Code, Codex, OpenCode.

Wrote 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.

agentmods badge for karpathy-wiki AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/toolboxmd/karpathy-wiki/agents-md/github.svg)](https://agentmods.dev/instructions/toolboxmd/karpathy-wiki/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/toolboxmd/karpathy-wiki/agents-md"><img src="https://agentmods.dev/badge/instructions/toolboxmd/karpathy-wiki/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.

agentmods 80×15 button for karpathy-wiki AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/toolboxmd/karpathy-wiki/agents-md"><img src="https://agentmods.dev/badge/instructions/toolboxmd/karpathy-wiki/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 919 This file is loaded in full into every session.
When invoked 919 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00919 $0.00919
Opus 5.5 $0.00368 $0.00368
Sonnet 5.5 $0.00184 $0.00184
Haiku 4.5 $0.00092 $0.00092

Measured 2mo ago against content hash eb3338eb001d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

karpathy-wiki 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 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.

AGENTS.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Contributing to karpathy-wiki

Active planning handoff

Before changing test policy or removing, merging, or demoting tests, read docs/planning/2026-08-12-test-strategy-rightsizing-handoff.md. The first phase is a read-only portfolio audit and must stop for human review. Remove this pointer when that workstream is resolved.

Project ledger files

Use the global project-ledger convention when adding or pruning local CHANGELOG.md, TODO.md, ISSUES.md, and IDEAS.md.

In this repository, ISSUES.md means a local known-problems scratchpad. It is not the wiki issues command, not .ingest-issues.jsonl, not a GitHub Issues replacement, and not a work-package manifest.

Recent Changes

  • 2026-08-27: Schema-proposals retired. Ingest logs schema-drift; doctor archives leftover files. Init no longer creates that inbox.
  • 2026-08-27: karpathy-wiki is a three-host plugin in marketplace toolboxmd (Codex, Claude Code, Grok Build). It is not the marketplace.
  • 2026-08-27: Ingest must-augment clustered objects, silently patches schema.md, and a detached wiki doctor census runs on schema cadence (Grok xhigh, Codex max fallback). Doctor does not rewrite page bodies.
  • 2026-08-26: Read Step B uses per-index document frequency: rare terms select, common terms (6+ hits, including tags on the index line) AND-filter unless that would empty the set. Related-only ingest does not append sources:.
  • 2026-08-21: Split the old combined backlog into CHANGELOG.md, TODO.md, ISSUES.md, and IDEAS.md.

If you are an AI agent

Before opening a PR against this repo:

  1. Read the PR template (when one exists) and answer every prompt; do not skip prompts you find redundant.
  2. Search for existing PRs on the same topic. Duplicates get closed.
  3. Verify a real problem exists. Cite the failing test, the wrong output, or the user-reported bug. Do NOT fabricate problem descriptions.
  4. Show your human partner the complete diff before submitting. Walk them through it.

Read the full file on GitHub · 81 lines

Changes

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.

  1. 2mo ago First seen · 81 lines · 919 tokens per session scan A eb3338eb001d

Subscribe to this mod's changes

karpathy-wiki AGENTS.md is an instructions file published in the GitHub repository toolboxmd/karpathy-wiki (105 stars, last pushed 19d ago), licensed MIT. It adds 919 tokens to every session, about $0.0037 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.

Related

karpathy-wiki AGENTS.md compared with instructions from other repositories

karpathy-wiki AGENTS.md next to 6 instructions from other repositories
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karpathy-wiki AGENTS.mdtoolboxmd/karpathy-wikiInstructions file10519d agoMITA919Claude Code, Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
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vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode