Mischa Sigtermans

Mischa Sigtermans - Building Products

I've been shipping products and building ventures for over a decade. First exit at 25, second at 30. Now Partner & CPO at Ryde Ventures, an AI venture studio in Amsterdam. Currently shipping Stagent and Onoma. Based in Hong Kong. I write about what I learn along the way. More about me.

Recent thoughts

Taylor is still immortal, but now he remembers
05/09
How I made my Claude Code projects call each other
05/05
I gave frustrated Tesla owners a place to go, 1.250 showed up in 24 hours
04/15
Every setting in my Claude Code config, explained
04/13
Opus 4.6 is the best model I've ever used
04/11
All thoughts →

Ventures

Onoma ↗

Memory layer for AI. Context across models, without exposing your identity.
Stagent ↗

Booking and management platform for agencies and artists.
Ryde Ventures ↗

AI venture studio building and investing in early-stage AI products.
True Identity ↗

Harder styles booking agency and music label.

exited
Pixelstart

Web design, ecommerce and development for DJs, artists and YouTubers.

exited

Packages

Laravel TOON ↗

TOON encoding for Laravel. Encode data for AI/LLMs with 40-60% fewer tokens than JSON.
Claude Personas ↗

Persona advisors for Claude Code. Channel Taylor Otwell or Steve Jobs with project memory.
Claude Parley ↗

Cross-session bridge for Claude Code. Ask one project what another knows, with memory.
Claude Ralph ↗

Autonomous coding loop for Claude Code. Define user stories, run, check back when done.
Laravel Sift ↗

Lightweight email domain extraction for Laravel. Filter public providers to identify business emails.
Laravel OG Kit ↗

Dynamic OG images for Laravel. Design social previews with your own HTML and CSS.

Books

The 5-Project Rule

Stop starting. Start finishing. The system I use to go from 14 scattered projects to 5 that get done.