project-setup

project-setup is a skill for Claude Code, Codex from jaqubowsky/prmpt. It costs 90 tokens per session (2,595 once invoked), scanned A, original, MIT.

A guided setup process for preparing a project's agent instructions and AI documentation. It first inspects the codebase, then asks focused questions about unresolved project decisions.

In plain words
What is it for?
Use it to finish initial project setup, establish development conventions, and resolve choices about the project's structure and behavior.
Why use it?
It exposes missing decisions and edge cases before development begins. It also creates shared documentation so future agents understand how the project should be worked on.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/jaqubowsky/prmpt/project-setup
Any agent
npx skills add jaqubowsky/prmpt --skill project-setup
Clone the repo
git clone --depth 1 https://github.com/jaqubowsky/prmpt

Made for: Claude Code, Codex.

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 project-setup

README.md
[![agentmods](https://agentmods.dev/badge/skills/jaqubowsky/prmpt/project-setup.svg)](https://agentmods.dev/skills/jaqubowsky/prmpt/project-setup)
Your own site
<a href="https://agentmods.dev/skills/jaqubowsky/prmpt/project-setup"><img src="https://agentmods.dev/badge/skills/jaqubowsky/prmpt/project-setup.svg" alt="Measured on agentmods" height="20"></a>
Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,595 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00090 $0.02595
Opus 5 $0.00045 $0.01298
Sonnet 5 $0.00018 $0.00519
Haiku 4.5 $0.00009 $0.00260

Measured 4d ago against content hash 5d9065e81a2c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

project-setup 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 4d 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/project-setup/SKILL.md · 172 lines

How it starts

The opening of the file, as written. The whole thing — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Interview me relentlessly about every aspect of this project until we reach a shared understanding so thorough that development can begin without ambiguity. Walk down each branch of the decision tree, resolving dependencies one-by-one. For each question, provide your recommended answer. Challenge my answers when they don't hold up. Don't let me off easy.

Before asking anything

Silently read the codebase: config files, folder structure, a few source files, existing tests, README. Build a mental model of what's there.

Then present what you found (3-5 bullets) and say you'll ask questions one at a time.

How to interview

Ask exactly ONE question per message. Not two, not three — one. Even in Phase C/D when it feels like you could batch related questions (e.g., "tests + CSS + naming"), don't. Each decision deserves its own turn so the user can think about it properly and you can push back on the answer before moving on.

If a question can be answered by exploring the codebase, explore the codebase instead of asking.

You are an opinionated collaborator, not a transcriber

The user is not always right. Your job is to build the best possible foundation for development — that means:

  • Push back when a decision doesn't make sense. "You said no tests, but this has complex state logic that will break silently. Are you sure? I'd strongly recommend at least testing the data layer."
  • Suggest things the user hasn't thought of. "You didn't mention error states — what happens when the API is down? What does the user see? This needs to be decided before we build."
  • Predict edge cases before the user does. Don't wait for them to realize a problem. "You want localStorage for identity — but what happens when they open the link on a different device or browser? They lose their identity. We need to solve this NOW, not after launch."
  • Challenge vague answers. "You said 'simple app' — simple for who? A developer? Someone who's never used a computer? The answer changes the entire UI approach."
  • Propose your own ideas. Don't just ask what the user wants — tell them what you'd recommend and why. "Based on what you've described, I think you also need X because Y."
  • Never decide naming/organization without asking. Test file location (co-located vs __tests__/), test file naming (.test.ts vs .spec.ts), test style (describe/it vs test()), import ordering, export style (named vs default) — these are ALL preferences. Ask about each one. Don't silently pick a convention and write it into docs.

Read the full file on GitHub · 172 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. 4d ago First seen · 172 lines · 90 tokens per session scan A 5d9065e81a2c

Subscribe to this mod's changes

project-setup is a skill published in the GitHub repository jaqubowsky/prmpt (2 stars, last pushed 5mo ago), licensed MIT. It adds 90 tokens to every session and 2,595 once invoked, about $0.0005 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 2026-08-31.

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