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nanogpt

nanogpt is a skill for Claude Code, Codex from KalarisLabs/research-agent-skills. It costs 149 tokens per session (2,536 once invoked), scanned A, original, no licence file.

Provides nanoGPT, Karpathy's minimal PyTorch GPT implementation (model.py and train.py), with workflows for training character-level Shakespeare on CPU, reproducing GPT-2 124M on OpenWebText with multi-GPU torchrun, fine-tuning pretrained GPT-2 checkpoints, and training on custom text. Use when learning how GPT and…

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python data/shakespeare_char/prepare.py.

not rated 105repo today A scan 149 tokens custom licence
Compare 6 skills from other repositories ↓
View source ↗ KalarisLabs/research-agent-skills docs.kalarislabs.com
Install

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.

Clone the repo
git clone --depth 1 https://github.com/KalarisLabs/research-agent-skills
agentmods
npx agentmods add skills/kalarislabs/research-agent-skills/nanogpt

Made for: Claude Code, Codex.

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 nanogpt

README.md
[![agentmods](https://agentmods.dev/badge/skills/kalarislabs/research-agent-skills/nanogpt/github.svg)](https://agentmods.dev/skills/kalarislabs/research-agent-skills/nanogpt)
Your own site
<a href="https://agentmods.dev/skills/kalarislabs/research-agent-skills/nanogpt"><img src="https://agentmods.dev/badge/skills/kalarislabs/research-agent-skills/nanogpt/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 nanogpt

Your own site · 80×15
<a href="https://agentmods.dev/skills/kalarislabs/research-agent-skills/nanogpt"><img src="https://agentmods.dev/badge/skills/kalarislabs/research-agent-skills/nanogpt.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 149 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,536 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00149 $0.02536
Opus 5.5 $0.00060 $0.01014
Sonnet 5.5 $0.00030 $0.00507
Haiku 4.5 $0.00015 $0.00254

Measured today against content hash 8190fd00e61e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nanogpt 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 today.

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.

skills/nanogpt/SKILL.md · 320 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

3 files 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.

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. today First seen · 320 lines · 149 tokens per session scan A 8190fd00e61e

Subscribe to this mod's changes

nanogpt is a skill published in the GitHub repository KalarisLabs/research-agent-skills (105 stars, last pushed today), with no licence file. It adds 149 tokens to every session and 2,536 once invoked, about $0.0006 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 2026-11-07.

Data and AIacademic-researchacademic-writingagent-skillsai-agentsbioinformaticscitation-verification
Related

nanogpt compared with skills from other repositories

nanogpt next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
nanogptKalarisLabs/research-agent-skillsSkill105todaynoneA149Claude Code, Codex
research-managerpoemswe/co-researcherSkill1354d agoMITA21Claude Code
alterlab-pyhealthAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA132Claude Code
alterlab-timesfmAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA150Claude Code
alterlab-esmAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA101Claude Code
alterlab-deepchemAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA127Claude Code
alterlab-pufferlibAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA127Claude Code