Agentic Builders Club

Session 4 · Welcome back

Key learnings from last week?

You built software with Claude - how?
Successes? Challenges?

Space / Page Down to advance

Agentic Builders Club

Session 4 · From idea to brief

This week, you write the brief

Tonight the idea is yours. No prompt sheet!

Claude help you elaborate by asking questions.

Tip: Start small; build your understanding & confidence.

Remember last week's black box?

Tonight: Requirements and Planning

This week: craft requirements and plan; Next week: build & iterate.

Open floor · ask us anything

Big questions worth asking

💷 Making money / value with AI

Valuable work, income, jobs - what's actually changing?

⚡ Speeding up your day

How to get faster at what I already do?

🧠 Getting better, not worse

Where to learn...
and how to keep my own edge?

🚀 From idea to business

Should I build it? sell it? a service or a product?

No wrong questions — pick a thread and ask away!

Where we're headed tonight

Idea → brief → PRD

💡An ideain your head

"I keep checking five websites to plan my weekend."

One sentence
Full of hidden guesses

→Q&A

📋A briefConcept document

What it does · why · UX

One page, plain English
Does it make sense?

→/to-prd

📄A PRDthe full write-up

Problem · Requirements · Scope

What real product teams write
Product Requirements Document

Introducing Claude skills: Type /to-prd, and Claude writes the requirements

Then the second skill refines it

Claude interviews you

ClaudeThe interviewer

Asks one at a time
Recommends an answer
Updates the PRD

→ asks ← you decide

YouThe one with the idea

Make the calls
"You decide" is fine
"Not what I meant!"

/to-prd wrote the document without asking you anything
/grill-me seeks out and clarifies ambiguiuty.

You don't need all the answers up front. You need to answer the questions.

Why let it grill you?

Fuzzy is cheap on paper

Avoid big misunderstandings

Mid-build

"Wait... where does the data even come from?"

Claude guessed — and built the wrong thing
An hour of building, thrown away
Build week stalls

Clarity achieved tonight

On paper

Same gap - caught by Q&A

The fix costs one sentence
The requirements get sharper
Build week flies

Small and sharp beats big and vague.

Before and after the grilling

Draft in; requirements out

📄 Draft PRD: Claude's guesses

Fetches weather for the garden
Shows useful information
Maybe some kind of alerts?

→/grill-me

📄 Refined PRD: Your decisions

Tonight's frost risk, one screen
Data from one free weather feed
Alerts: out of scope — version 2

Work with Claude to help you clarify, elaborate and document your thinking.

A peek ahead · fast finishers try this tonight

From plan to to-do list

📄 Your PRD

The problem
The requirements
The decisions you made
What's in / out of scope

→/to-issues

Step 1

Read the data, print the answer

Step 2

Turn it into a page

Step 3

Add the live feed

A good plan chops into small steps — each one small enough to run and show.

Tonight, in four moves

Co-author with Claude.

Pick your idea
Draft the brief with Claude — the what, not the how
Type /to-prd — Claude grows it into the full document
Type /grill-me and answer until the requirements are clear

Before you start · 2 minutes

Get set up

📁 my-project

📄CLAUDE.mdthe rulebook

✍️to-prdthe writer skill

🔥grill-methe interviewer skill

📋brief.mdyou write this tonight

1 Grab the starter kit from the Resources page

2 Unzip into a folder named after your project, open in VS Code

3 Tell Claude your idea in one sentence — draft the brief, then /to-prd, then /grill-me

It's all on the website — harbury-abc.uk/resources under "Session 4 -"