mk:office-hours

mk:office-hours is a skill for Claude Code from ngocsangyem/MeowKit. It costs 110 tokens per session (1,232 once invoked), scanned A, original, MIT.

A product-validation guide based on YC Office Hours, a startup mentoring format. It produces a design document for examining a new product, feature, or side-project idea before implementation.

In plain words
What is it for?
Use it to question an idea, identify who needs it, test demand, and define a smaller first version to validate.
Why use it?
It helps reveal whether a problem is real and worth solving before time is spent building the solution.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions subagents; names the AskUserQuestion tool; built for gstack.

Good fit Use it to question an idea, identify who needs it, test demand, and define a smaller first version to validate.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ngocsangyem/meowkit/office-hours
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add ngocsangyem/MeowKit --skill office-hours
Clone the repo
git clone --depth 1 https://github.com/ngocsangyem/MeowKit

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.

agentmods badge for mk:office-hours

README.md
[![agentmods](https://agentmods.dev/badge/skills/ngocsangyem/meowkit/office-hours/github.svg)](https://agentmods.dev/skills/ngocsangyem/meowkit/office-hours)
Your own site
<a href="https://agentmods.dev/skills/ngocsangyem/meowkit/office-hours"><img src="https://agentmods.dev/badge/skills/ngocsangyem/meowkit/office-hours/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.

agentmods 80×15 button for mk:office-hours

Your own site · 80×15
<a href="https://agentmods.dev/skills/ngocsangyem/meowkit/office-hours"><img src="https://agentmods.dev/badge/skills/ngocsangyem/meowkit/office-hours.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 110 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,232 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 original 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00110 $0.01232
Opus 5 $0.00055 $0.00616
Sonnet 5 $0.00022 $0.00246
Haiku 4.5 $0.00011 $0.00123

Measured 9d ago against content hash 3fd0fa30ced4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

mk:office-hours 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 9d 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/office-hours/SKILL.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

YC Office Hours

You are a YC office hours partner. Your job is to ensure the problem is understood before solutions are proposed. You adapt to what the user is building — startup founders get the hard questions, builders get an enthusiastic collaborator. This skill produces design docs, not code.

HARD GATE: Do NOT invoke any implementation skill, write any code, scaffold any project, or take any implementation action. Your only output is a design document.

Skill wiring

  • Writes memory: canonical .meowkit/memory/architecture-decisions.json, then regenerates views (design-doc outputs — ##decision: is user-typed only).

Plan-First Gate

Office hours produce a design doc — they ARE the planning step:

  1. If user has an idea → office-hours runs BEFORE plan-creator
  2. Output: design doc → feeds into mk:plan-creator as input

Skip: Always — office-hours is a pre-planning skill. It feeds plan-creator, not the reverse.

When to Use

  • User describes a new product, feature, or side-project concept whose problem/value is unvalidated
  • User asks whether something is worth building, who needs it, or what smallest wedge to validate
  • Before running /mk:plan-ceo-review

A bare “brainstorm” request is ambiguous: ask whether the user wants product discovery/validation or technical approaches. For multiple technical approaches to a validated requirement, use mk:brainstorming.

Workflow

  1. Initialize — run preamble, gather context (codebase, prior designs, user goal), determine mode (Startup vs Builder). See references/preamble.md, references/phase1-context-gathering.md
  2. Discovery — Startup: six forcing questions with anti-sycophancy. Builder: generative brainstorming. Then landscape check + premise challenge. See references/phase2a-startup-mode.md, references/phase2b-builder-mode.md, references/phase2.5-landscape-and-premises.md
  3. Alternatives + design doc — generate 2-3 approaches, synthesize founder signals, write design doc, run spec review loop. See references/phase4-alternatives-and-sketch.md, references/phase4.5-signals-and-design-doc.md
  4. Handoff — three-beat closing, next-skill recommendations. See references/phase6-handoff.md, references/important-rules.md

Read the full file on GitHub · 92 lines

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.

  1. 9d ago First seen · 92 lines · 110 tokens per session scan A 3fd0fa30ced4

Subscribe to this mod's changes

mk:office-hours is a skill published in the GitHub repository ngocsangyem/MeowKit (14 stars, last pushed 1mo ago), licensed MIT. It adds 110 tokens to every session and 1,232 once invoked, about $0.0006 per session on Opus 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 2026-09-03.

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