Interview Prep Agent Skill

by cosmicstack-labs

Behavioral frameworks, technical interview patterns, system design, coding, and negotiation prep

449 tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

365

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/cosmicstack-labs/mercury-agent-skills --skill interview-prep

The instruction itself

8 sections, as written by the author

Interview Prep

Systematic preparation for technical and behavioral interviews.

Behavioral Frameworks

STAR for Behavioral Questions

Tell me about a time when...

| Element | What to Cover |

|---------|--------------|

| Situation | Context — project, team, timeline |

| Task | Your specific responsibility |

| Action | What YOU did (not the team) |

| Result | Quantified outcome, what you learned |

Common Questions to Prepare

"Tell me about yourself" → 60-second career narrative
"Biggest challenge/project" → STAR with technical depth
"Conflict with a teammate" → Show emotional intelligence
"Failure/mistake" → Honest story + what you learned
"Why this company?" → Research-driven, specific

Technical Interview Prep

Coding

Practice 2-3 problems daily (LeetCode medium)
Focus on: Arrays, Hashmaps, Trees, Graphs, DP
Always: Clarify → Brute force → Optimize → Code → Test
Think out loud — interviewer wants to hear your process

System Design

Practice these scenarios:

Design URL shortener (read-heavy, hashing, scaling)
Design chat system (WebSockets, persistence, presence)
Design news feed (fan-out, caching, ranking)
Design rate limiter (token bucket, sliding window, distributed)

Pre-Interview Checklist

[ ] Research company and interviewers on LinkedIn
[ ] Prepare 3 questions to ask at end
[ ] Test your camera, mic, internet
[ ] Have water, notebook, pen ready
[ ] Review your resume and projects

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How to use it

Copy the folder

Take cosmicstack-labs/interview-prep from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.