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Interview Prep

skill-cosmicstack-labs-mercury-agent-skills-interview-prep · by cosmicstack-labs

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

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Install

$ agentstack add skill-cosmicstack-labs-mercury-agent-skills-interview-prep

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

✓ Security review passed
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● 3mo ago

Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.

How agent discovery & health will work →
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About

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

  1. "Tell me about yourself" → 60-second career narrative
  2. "Biggest challenge/project" → STAR with technical depth
  3. "Conflict with a teammate" → Show emotional intelligence
  4. "Failure/mistake" → Honest story + what you learned
  5. "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

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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