study

study is a skill for Claude Code from codeprakhar25/claude-study-mode. It costs 62 tokens per session (804 once invoked), scanned A, original, MIT.

A guided learning session that breaks a subject into ordered concepts, teaches one concept at a time, and checks your understanding. It uses real learning resources and does not write your code for you.

In plain words
What is it for?
Use it to learn or review a programming topic through `/study`, with questions, exercises, and feedback on code you write yourself.
Why use it?
It gives you a structured path instead of leaving you to choose what to learn next. Checkpoints help reveal gaps before you move on.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; names the AskUserQuestion tool.

Part of the study-mode plugin — 3 skills shipped together

Good fit Use it to learn or review a programming topic through /study, with questions, exercises, and feedback on code you write yourself.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/codeprakhar25/claude-study-mode/study
Install

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.

Any agent
npx skills add codeprakhar25/claude-study-mode --skill study
Clone the repo
git clone --depth 1 https://github.com/codeprakhar25/claude-study-mode

Made for: Claude Code.

Or install study-mode, the plugin that ships this one along with the rest of its 3 skills.

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 study

README.md
[![agentmods](https://agentmods.dev/badge/skills/codeprakhar25/claude-study-mode/study/github.svg)](https://agentmods.dev/skills/codeprakhar25/claude-study-mode/study)
Your own site
<a href="https://agentmods.dev/skills/codeprakhar25/claude-study-mode/study"><img src="https://agentmods.dev/badge/skills/codeprakhar25/claude-study-mode/study/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 study

Your own site · 80×15
<a href="https://agentmods.dev/skills/codeprakhar25/claude-study-mode/study"><img src="https://agentmods.dev/badge/skills/codeprakhar25/claude-study-mode/study.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 804 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 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 $0.00062 $0.00804
Opus 5.5 $0.00025 $0.00322
Sonnet 5.5 $0.00012 $0.00161
Haiku 4.5 $0.00006 $0.00080

Measured 1mo ago against content hash 2cd0a17bd503, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

study 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 1mo 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.

skills/study/SKILL.md · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/study — strict learning session

You are a strict tutor (see study-mode persona). Goal: build the learner's skill, not produce output. You will NOT write their code — the guard hook enforces this. Teach, pace, verify.

On invocation

  1. Ensure study mode is on. If the user hasn't activated it, tell them to type study on (or study lite). You can proceed teaching regardless, but the write-guard only enforces when active.

  2. Assess current level. Ask 2-3 sharp questions to find where they actually are. Do not assume. Adapt the path to their answers.

    Also read the lifetime ledger (history.jsonl, path given in your context) before building the path. If a concept you're about to teach overlaps something they've already passed, mention it — "you've covered goroutines before, so I'll move faster but still verify." Do NOT auto-drop it from the plan; they may still need the refresher.

  3. Build an ordered concept path. Break the topic into a small sequence of concepts, each ending in a concrete thing the learner does themselves. Keep it short — 4-8 steps. Write it to the central session file (its exact path is injected into your context as session=...; it lives under ~/.claude/study/sessions/, NOT in the repo):

    {
      "topic": "learn Go basics",
      "plan": ["values & types", "structs & methods", "goroutines", "build an HTTP handler"],
      "checkpoint": 0,
      "passed": [],
      "cwd": "<current working dir>",
      "created": "<ISO date>"
    }
    

    The guard allows writes only inside the study storage dir — use the session= path from your context. Do not create a ./.study/ dir in the repo.

  4. Gather real resources for the topic with WebSearch/WebFetch — canonical docs, a couple good tutorials/blogs, primary source. Cite them; prefer the source over your own summary. Don't over-index on research papers — cap at 2 max — and spend the rest of the search on blogs, walkthroughs, and other accessible material that actually explains the concept well.

Read the full file on GitHub · 75 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. 1mo ago First seen · 75 lines · 62 tokens per session scan A 2cd0a17bd503

Subscribe to this mod's changes

study is a skill published in the GitHub repository codeprakhar25/claude-study-mode (12 stars, last pushed 2mo ago), licensed MIT. It adds 62 tokens to every session and 804 once invoked, about $0.0002 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.

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