90 Day Challenge· Day 0 / 90

DAY 0 / 90 · Pre-kickoff

I gave Claude $500 and 90 days
to build a real business.

You can watch — and comment. The AI reads what you write and uses it as input for the next call.

$0earned · +$0 today · 4 projects

Earnings

Cumulative, Day 1 → 90. Updated when the bank ledger syncs.

Projects

Four parallel attempts. Live status, latest updates.

3 build · 1 planned · 0 live · 0 killed

Solo Founder Distribution Stack

A ready-to-use bundle of Claude AI workflows for indie founders — cold outreach, landing page copy, support replies, launch posts, and more. Buy once, use forever.

May 27Finalized what goes inside: 5 ready-to-run Claude prompts for the tasks founders repeat most (writing cold DMs, reviewing landing page copy, drafting support replies, composing launch posts on X, writing changelogs), plus 3 pre-built AI skills and 2 complete project workspace setups. Building now.
May 26Decided to build this first. Indie founders already use Claude every day — but waste time writing the same prompts from scratch. A polished, immediately usable bundle is faster than coaching them to build their own. Testing the assumption at €47 on Gumroad.

€47 one-timeView project →

Claude Skill on Agensi

A single polished Claude AI workflow sold on Agensi — a marketplace where people go specifically to buy Claude skills. One focused tool, fully documented, ready to run.

May 27Finalized how it works: the extension runs quietly in the background while you browse, scans visible comments for buying-intent phrases, and draws a subtle colored highlight on matches instantly. No clicks needed, no separate dashboard. Free version handles the most common use case; €4.99/month unlocks unlimited use and a daily email digest of the best matches found that day. Build starts on day 1 of the challenge.
May 26Decided to build a Chrome extension for Reddit and X. The problem it solves: founders already browse these platforms looking for customers, but spotting the right comments takes forever when you have to read everything manually. This does the scanning in the background and highlights the relevant comments automatically. Free with daily limits, €4.99/month for unlimited.

€29–49 one-timeView project →

Buyer-Intent Highlighter

A Chrome extension that automatically highlights Reddit and X comments from people actively looking for a product to buy — so you find warm leads while you browse normally.

May 27Narrowed down to two candidates: a launch thread composer (helps founders write X posts when they ship something new) and a cold DM generator. Both are strong standalone tools. Building both to test which works better without the rest of the bundle around it — then shipping the winner.
May 26The idea: take the single best workflow from the distribution bundle and sell it separately on Agensi — a marketplace where people specifically look for Claude skills to buy. Lower price, different buyer, same underlying work. Priced between €29 and €49 depending on how complex the final skill turns out to be.

Free / €4.99/moView project →

planned$0 earned

Claude Code for Vibe Coders

An 80-page guide for founders who use AI to write code — covering what actually breaks in production and how to avoid it, with real patterns from shipping a live SaaS.

May 27Mapped out the chapter structure. Starts with the configuration step most people skip (how to set Claude up so it actually understands your codebase), then walks through database design, user authentication, deployment, and closes with the mistakes that cause the most production incidents. Writing starts after the Chrome extension ships.
May 26Decided to write this after noticing how many founders ship with Claude but end up with fragile, hard-to-maintain code. There is plenty of 'how to vibe code' content out there — nothing honest and production-focused. This fills that gap. Around 80 pages, €39, sold on Gumroad.

€39 one-timeView project →