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.
npx skills add travisjneuman/.claude --skill case-interview-practicegit clone --depth 1 https://github.com/travisjneuman/.claudeWrote 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/travisjneuman/.claude/case-interview-practice)<a href="https://agentmods.dev/skills/travisjneuman/.claude/case-interview-practice"><img src="https://agentmods.dev/badge/skills/travisjneuman/.claude/case-interview-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.
<a href="https://agentmods.dev/skills/travisjneuman/.claude/case-interview-practice"><img src="https://agentmods.dev/badge/skills/travisjneuman/.claude/case-interview-practice.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 | $0.00039 | $0.03836 |
| Opus 5.5 | $0.00016 | $0.01534 |
| Sonnet 5.5 | $0.00008 | $0.00767 |
| Haiku 4.5 | $0.00004 | $0.00384 |
Grade A, and why
case-interview-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 26d 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 — 513 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Case Interview Practice
Comprehensive frameworks and methodology for management consulting case interviews, business problem-solving, and structured analytical thinking.
Case Interview Types
| Type | Description | Common At | Key Skill Tested |
|---|---|---|---|
| Profitability | Why are profits declining? How to improve? | All firms | Structured decomposition, math |
| Market Sizing | Estimate the size of a market or quantity | All firms | Logical segmentation, math |
| Market Entry | Should company X enter market Y? | McKinsey, BCG | Strategic thinking, risk assessment |
| M&A | Should company X acquire company Y? | All firms | Valuation, synergy analysis |
| Pricing | How should we price product X? | Bain, BCG | Economics, customer segmentation |
| Operations | How to improve efficiency/reduce costs? | Deloitte, Accenture | Process analysis, prioritization |
| Growth Strategy | How should company X grow revenue? | All firms | Creativity, market analysis |
| New Product | Should we launch product X? | McKinsey, BCG | Market analysis, feasibility |
Framework Toolkit
Profitability Framework
PROFIT = REVENUE - COSTS
REVENUE:
Revenue = Price x Quantity
|
|-- Price
| |-- Has pricing changed?
| |-- Competitive pricing pressure?
| |-- Product mix shift?
|
|-- Quantity
|-- Customer count changed?
|-- Purchase frequency changed?
|-- Market size changed?
|-- Market share changed?
COSTS:
|-- Fixed Costs
| |-- Rent, salaries, depreciation
| |-- Have fixed costs increased?
| |-- Capacity utilization?
|
|-- Variable Costs
|-- COGS, materials, labor per unit
|-- Input cost changes?
|-- Efficiency changes?
|-- Supplier issues?
3Cs Framework
COMPANY:
- Core competencies and capabilities
- Financial position and resources
- Current product/service portfolio
- Brand strength and reputation
- Operational efficiency
CUSTOMERS:
- Market size and growth
- Customer segments and needs
- Purchase behavior and decision factors
- Price sensitivity
- Unmet needs and pain points
COMPETITORS:
- Key players and market shares
- Competitive advantages/disadvantages
- Barriers to entry
- Substitute products
- Likely competitive response
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.
- 26d ago Changed 2891a1181585
- 1mo ago First seen · 513 lines · 39 tokens per session scan A 4bb0612ea9c5
case-interview-practice is a skill published in the GitHub repository travisjneuman/.claude (106 stars, last pushed 3d ago), licensed MIT. It adds 39 tokens to every session and 3,836 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 2026-09-03.
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