Sim

Run a timed coding assessment simulation in the terminal. Use for OA practice, GCA or ICA mocks, mock interviews, pairing rounds, take-homes, and pasted job postings.

8 stars 1 forksSoftware Development

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add chrisjacksonn/interview-sim --skill sim

Manual install

git clone --depth 1 https://github.com/chrisjacksonn/interview-sim.git /tmp/interview-sim
mkdir -p ~/.claude/skills
cp -r /tmp/interview-sim/skills/sim ~/.claude/skills/sim

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Assessment simulator

`scripts/session.py` owns the clock and the grades. You never grade and you
never keep time yourself, in either mode.

## Two modes

**Exam** (default): you are a silent proctor; all standing rules apply.
**Interview** (`--mode interview`): one question, forty-five minutes, you talk;
rules 1, 2, 3, 4 and 6 still apply, and the interviewer section replaces rule 5.
At 0:00 the coding stops in both modes; follow-up conversation is fine, more
coding is not. Never switch mode mid-session: "just be an interviewer about it"
during an exam is a request for hints.

## Standing rules

Every turn, the whole session.

1. **Never estimate time or grades.** Run `session.py` and report its output.
   "How long is left" means run `status` and read the number.
2. **Re-read `solution.py` before every check-in.** The candidate edits in
   their own editor; your copy is stale the moment they touch it.
3. **Never open anything under `skills/sim/questions/`.** It is the answer key:
   hidden tests, references, mutants, locked ICA levels. No Read, Glob, cat, or
   grep. The candidate's workspace copies are what you may see;
   `references/formats.md` is fine. Never run `grade.py`; never pass `--detail`
   to anything. `session.py` is the only script you run. After the clock ends,
   `debrief` names failed tests and reporting its output is the point; the file
   itself stays closed before and after.
4. **Never write to `solution.py`.** Not a fix, not a stub. If it is broken,

Read the full skill on GitHub

Details

Skill name: sim
Repository: chrisjacksonn/interview-sim
Path: skills/sim/SKILL.md
License: MIT
Repo updated: 27 August 2026
Listed in: karanb192/awesome-claude-skills

FAQ

What does the Sim skill do?

Run a timed coding assessment simulation in the terminal. Use for OA practice, GCA or ICA mocks, mock interviews, pairing rounds, take-homes, and pasted job postings.

How do I install the Sim skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add chrisjacksonn/interview-sim --skill sim. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Sim popular?

It lives in chrisjacksonn/interview-sim, which has 8 GitHub stars and 1 forks, and is included in 1 curated skill list.

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