What is interview-coach?

A conversational interview coach that acts as an interviewer, guides a selected interview format, scores answers against a rubric, and gives improvement advice. It supports system-design, coding, behavioural, and SRE incident-review interviews for listed roles.

It is for mock interviews, including system design, coding, behavioural questions, and SRE post-incident discussions.

Practising alone can make it hard to recreate interview pressure or judge the quality of an answer. A guided conversation and scoring rubric provide structured practice and feedback.

How allengaller/gutter-interview-skills configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to allengaller/gutter-interview-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/allengaller/gutter-interview-skills/master/.claude/skills/interview-coach/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/allengaller/gutter-interview-skills

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/allengaller/gutter-interview-skills/interview-coach/github.svg)](https://agentmods.dev/skills/allengaller/gutter-interview-skills/interview-coach)

Your own site

<a href="https://agentmods.dev/skills/allengaller/gutter-interview-skills/interview-coach"><img src="https://agentmods.dev/badge/skills/allengaller/gutter-interview-skills/interview-coach/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/allengaller/gutter-interview-skills/interview-coach"><img src="https://agentmods.dev/badge/skills/allengaller/gutter-interview-skills/interview-coach.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 213 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,505 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00213	$0.01505
Opus 5.5	$0.00085	$0.00602
Sonnet 5.5	$0.00043	$0.00301
Haiku 4.5	$0.00021	$0.00151

Measured 2mo ago against content hash 9b34f45b07e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

interview-coach 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 2mo 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.

.claude/skills/interview-coach/SKILL.md · 108 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

19 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

2mo ago Changed · +4 lines · +40 tokens per session 9b34f45b07e4
2mo ago First seen · 104 lines · 173 tokens per session scan A d3781bf3a83c

Subscribe to this mod's changes

interview-coach is a skill published in the GitHub repository allengaller/gutter-interview-skills (5 stars, last pushed 2mo ago), with no licence file. It adds 213 tokens to every session and 1,505 once invoked, about $0.0009 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 2026-08-31.

Learning and teaching

interview-coach next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
interview-coachallengaller/gutter-interview-skills	Skill	5	2mo ago	none	A	213	Claude Code
hr-onboardingnexu-io/open-design	Skill	107k	today	Apache-2.0	A	62	Claude Code, Codex
book-mirrorgarrytan/gbrain	Skill	33k	today	MIT	A	138	Claude Code
lean-formalizewanshuiyin/Auto-claude-code-research-in-sleep	Skill	19k	2d ago	MIT	A	81	Claude Code
exam-forecastanthropics/claude-for-legal	Skill	10.0k	5d ago	Apache-2.0	A	73	Claude Code
eli5companion-inc/feynman	Skill	10k	6d ago	MIT	A	63	Claude Code, Codex
deck-course-modulenexu-io/html-anything	Skill	9.5k	2d ago	Apache-2.0	A	25	Claude Code, Codex

gutter-interview-skills: Skill for Claude Code