Office Hours

This is YC-style office hours in two modes: startup mode hits you with six forcing questions to expose demand reality and find your narrowest wedge, while builder mode is looser brainstorming for side projects and hackathons. It triggers on phrases like "is this worth building" or "help me think through this" and writes a design doc when you're done. The gbrain setup pulls prior sessions, your builder profile, recent design docs, and eureka moments so you're not starting cold. Use it before you write any code or run plan reviews. It's opinionated by design: the forcing questions are meant to make you uncomfortable if your idea is vague, which is the point.

skills.sh installs: 623
GitHub stars: 141K
last updated: Aug 21, 2026

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Install

$ npx -y skills add garrytan/gstack --skill office-hours --agent claude-code

Installs into .claude/skills of the current project.

Files

Shared preamble (load first)

This skill follows gstack shared preamble 4e82fa4c839f (AskUserQuestion format, voice, writing, completeness and completion rules). If your Read of that file, headed by this id, is still in context, do not read it again; otherwise Read ~/.claude/skills/gstack/office-hours/sections/preamble.md in full before the command below. A section or subsection here with a shared heading replaces the shared one.

Preamble (run first)

~/.claude/skills/gstack/bin/gstack-skill-start --skill "office-hours" --model "claude"

SKILL.md on GitHub

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Details

Repository: github.com/garrytan/gstack
Category: Office & Documents
First seen: Jun 3, 2026

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