case-practice

case-practice is a skill for Claude Code from archugunov/pm-job-search. It costs 170 tokens per session (2,738 once invoked), scanned A, original, MIT.

A multiple-choice practice drill for product-management case interviews, where candidates analyse business problems and choose the strongest response.

In plain words
What is it for?
Use it to practise case recognition, learn common failure patterns, track a running score, and prepare for later mock interviews.
Why use it?
It helps learners recognise the difference between senior and junior answers before attempting harder interview exercises.

Skill for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: names the AskUserQuestion tool.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the pm-job-search plugin — 13 skills, 6 agents shipped together

Good fit Use it to practise case recognition, learn common failure patterns, track a running score, and prepare for later mock interviews.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add archugunov/pm-job-search
Claude Code
/plugin install pm-job-search

Made for: Claude Code.

Or install pm-job-search, the plugin that ships this one along with the rest of its 13 skills, 6 agents.

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 case-practice

README.md
[![agentmods](https://agentmods.dev/badge/skills/archugunov/pm-job-search/case-practice/github.svg)](https://agentmods.dev/skills/archugunov/pm-job-search/case-practice)
Your own site
<a href="https://agentmods.dev/skills/archugunov/pm-job-search/case-practice"><img src="https://agentmods.dev/badge/skills/archugunov/pm-job-search/case-practice/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 case-practice

Your own site · 80×15
<a href="https://agentmods.dev/skills/archugunov/pm-job-search/case-practice"><img src="https://agentmods.dev/badge/skills/archugunov/pm-job-search/case-practice.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 170 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,738 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 $0.00170 $0.02738
Opus 5 $0.00085 $0.01369
Sonnet 5 $0.00034 $0.00548
Haiku 4.5 $0.00017 $0.00274

Measured 11d ago against content hash f8f23c7fe39b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

case-practice 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 11d 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.

plugin/skills/case-practice/SKILL.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/case-practice — MC rapid-recognition drill

This is drill 1 — MC rapid-recognition — of the case-practice methodology, and it's the first rung of a five-drill ladder. Its job is to lock the recognition of senior-vs-junior answers and build the vocabulary every later drill needs: you can't fix a gap you don't have the language to name. It runs as batches of single-select questions, scores each pick with the specific failure mode behind every wrong option, tracks a running score against an 80% readiness gate, and extracts anchors to memorise. See ${CLAUDE_PLUGIN_ROOT}/references/case-interviews/practice-methodology.md for the full five-drill ladder (recognition → generation → performance) and why the order matters. The live mock (drill 4) runs via the interviewer-simulator agent — only after the user clears the ≥80% gate here.

Voice: follows ${CLAUDE_PLUGIN_ROOT}/TONE.md. Low-effort-first — start on context-weighted defaults; don't interrogate the user about scope, depth, or case types before the first batch. If a <Company> argument is given, theme from it silently (read the company's files, weight the mix, theme products) — no confirmation question.

MC-able case types (what the drill draws from)

MC recognition only fits atomic, discriminable judgement calls — "pick the strongest of four" where exactly one option is right and the rest each fail for a nameable reason. It does NOT fit open-ended strategy, technical / system-design, or estimation cases: those are free-form / live-mock territory (drills 2 and 4) and are out of scope for this drill. Don't generate MC questions for them.

The drill samples from:

  • Product sense — strongest NSM; the right segment + a clean pick-reason; JTBD need quality. This is the richest seam — weight it heaviest by default.
  • Metric movement — the correct first diagnostic fork (drop-to-diagnose vs goal-to-hit); MECE-clean vs overlapping decomposition.
  • Metric tree — the 4-part NSM form (unit + behaviour + threshold + cadence); guardrail vs counter-metric vs vanity metric.
  • Prioritisation — which lens fits the situation; "define value before you score"; spotting the sycophancy / spreadsheet-obeying trap.
  • Behavioural — spotting the seniority signal (rejected-options / named trade-off / honest retrospective) vs the junior tell (heroics, no failure named, wrong altitude).

Read the full file on GitHub · 102 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. 11d ago First seen · 102 lines · 170 tokens per session scan A f8f23c7fe39b

Subscribe to this mod's changes

case-practice is a skill published in the GitHub repository archugunov/pm-job-search (7 stars, last pushed 15d ago), licensed MIT. It adds 170 tokens to every session and 2,738 once invoked, about $0.0009 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 2026-08-31.

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