№ 01
stk
AI-NATIVE TOOLKIT 2026An opinionated toolkit for building, testing and shipping AI agents. Workspaces, evaluation harness, structured outputs. Designed for the kind of teams that ship.
PythonAgentsLLM Evals
stk.dev →
§ 02 — Selected Work
THINGS
I
BUILT.
Independent open-source projects under my own brand. Not client work — visible, dated, attributable, mine. The portfolio you see is the portfolio you get.
№ 02
Enferno
WEB FRAMEWORK 2014 → ongoingAI-native Flask framework. 800+ GitHub stars. Production scaffolding for serious applications — auth, admin, jobs, RAG, the works.
FlaskPythonPostgres
enferno.io →
№ 03
ReadyKit
SAAS STARTER 2024A SaaS starter kit on top of Enferno. Authentication, billing, admin, teams — every boring milestone shipped so you can focus on the actual product.
FlaskStripeTailwind
readykit.dev →
№ 04
OpenStadt
CIVIC TECH 2025Independent civic-tech project mapping public infrastructure equity across German cities. Open source, open data, openly accountable.
Open DataMappingPython
openstadt.org →
№ 05
ZigLag
OSS INVOICING 2025Self-hosted invoicing software built on the stk framework. MIT licensed. Replaced three SaaS bills in my own workflow.
stkSelf-hostedMIT
ziglag.com →