Small apps, built with AI, built to last.

BreizhVibe is my set of vibe-coding skills and tools for web development for associations, festivals, clubs and small businesses
wavedevsimpl is my basic specification for quick and reliable app prototyping.

Methodology

- start simple with wavedevsimpl skill
- keep track of modifications via code tracking tool,
- keep history of prompts and detailed answers in md. Prompts name should follow rule : YMD-AIprovider-n.md

See the apps Case study: Youl Vat Read the skill

0: framework, Composer, npm or build step
1: folder to upload by FTP. Changing host means copying it
1: SQLite file holds the whole database

What we’ve already built

Real tools, coded with Claude, each on the stack that suits it.

Youl Vat

Live

“Good will” in Breton.

Volunteer scheduling for festive events, first built for the Fest-noz Vras Kalanna in Quimper. The public reads the planning, volunteers sign up for a free slot, organisers run the whole day from it.

Public planning, readable on any phone
Sign-up without an account, full slots refused
Overlap warnings and balanced workloads
Day-of check-in, CSV and JSON export
Trilingual: brezhoneg, français, English

PHP 8, SQLite, wavedevsimpl

View on GitHub Read the case study

Stokekstra

Prototype

Inventory in your pocket.

A mobile app for stock spread over several sites, warehouses and shops. Everything fits in one grid: products as rows, locations as columns, quantities where they meet.

Product × location grid with totals
Move stock between sites with a tap, or drag and drop
Works offline, data stays on the phone
File import and export
Demo data and one-tap reset

React Native, Expo, Zustand, MMKV

View on GitHub Read the article

WaveSupaCrud

Open source

The admin Supabase was missing.

An admin interface for Supabase databases, free plan included: browse, filter and edit your tables, and back up your data. Essential when you code with AI.

Tables, filters and pagination
“Glass” theme, light and dark
Backup from the menu
Vanilla JavaScript, no runtime framework
Tailwind CSS compiled once, nothing to build in production

JavaScript, Tailwind, Supabase

View on GitHub Read the article

SkridCMS

In the works

“Skrid” means writing in Breton.

A simple website editor: write and update the pages of a small site yourself, then host it like everything else. One folder, any PHP host.

PHP 8, no database, wavedevsimpl

GitHub Project

Read the case study

Skrid editing a page of wave.bzh: every editable text outlined, the Skrid bar at the bottom.

Vibe coding, with guardrails

Vibe coding is fast, but left alone an AI happily reaches for frameworks, cloud services and build pipelines that break in three years. For web tools, the wavedevsimpl skill is the packaged set of instructions Claude follows on every project, so each app comes out the same simple, durable shape.

1
Describe the need

A festival’s volunteer rota, a stock list, a website to edit. Plain words, real constraints, who’s public and who’s admin.
2
Claude builds it

With the wavedevsimpl skill loaded: same layout, same libraries, same security rules, and decisions recorded in the project’s CLAUDE.md.
3
Test on a copy

Never on the real database. Public pages checked at 375 px wide, export working before go-live.
4
Upload one folder

FTP it to any shared PHP host. The database creates itself on first launch. Nothing to install.

PHP 8 + SQLite + vanilla HTML, CSS and JS

Boring on purpose. PHP runs on every cheap host, SQLite turns the database into a file, and no dependency means nothing to update.

PHP first, JavaScript second: Pages are rendered by PHP; JavaScript is only a small add-on for filtering, confirmations or a rich-text editor. One language to read, so the people who maintain the tool can open a file and understand it.
Cheapest possible hosting: Any shared PHP host. Nothing to install server-side.
Change host painlessly: The database is a file. Migrating is copying the folder.
Maintained for years: No npm install, no build that breaks. Fine for non-specialists.
No external service: No Firebase or Supabase quotas, paused free tiers or changing terms.

Rules every app follows

SQLite in WAL mode, foreign keys on, busy timeout set on every connection.
Zero-install schema: created on first run, migrated automatically when it changes.
Business rules where concurrency matters live in SQL, not in PHP.
One JSON API with whitelisted tables and columns; private fields stripped for visitors.
Shared admin password, CSRF token on every POST, everything escaped.
Mobile first, relative paths everywhere, and a CSV/JSON export before go-live.

When it’s the wrong tool

BreizhVibe says so honestly and proposes something else when a project needs:

several servers behind a load balancer
dozens of concurrent writes per second
real per-user accounts with fine roles
a real-time collaborative interface

Useful tips

Tutorials, step by step

Three small tools we use on every project, each on one page: try a site on your Mac, log in to your server with a key, and publish with one command while you watch the deployment.

All tutorials

Go further

The wavedevsimpl skill Tutorial: optimise your images All the code on GitHub

A tool for your association or business?

Describe it in plain words: who uses it, what they need to do, what must stay private. I will tell you if BreizhVibe is the right fit.

Write to me on LinkedIn