Stefan Kummerlöw Design × Frontend × AI

AI + Design Lab

Experiments &
Playgrounds

A few things I built while exploring AI-native workflows. Side projects using language models, agents, and structured output.

A Berlin bear sitting with a heat pump in its lap

Next.js · Mapbox · Open Data

Wärmenetz-Karte Berlin

Berlin's municipal heat planning on a map. Blocks and building outlines load live from the city's WFS services, switchable by planning year.

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A photo with a cut line around the person, scissors, and the finished cutout next to the hole it left

Claude Skill · Local AI

Batch person cutout

Cuts people out of a folder of photos and sorts the results by person. Everything runs locally, so no photo leaves the machine.

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InDesign panels and a prompt for a 4x3 image grid, turned into a magazine spread

MCP · Adobe InDesign

InDesign for Claude

Describe a layout and Claude builds it in InDesign. It works on a copy, and every change is a single undo step.

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Claude Code Template Illustration

Template · CLI Tool

Claude Code product template

A small, opinionated, stack-agnostic starting point for building digital products end-to-end with Claude Code

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Daily Plan

Agents · Automation

Daily Plan

AI-native daily planner. Pulls live tasks from Asana + Calendar, auto-runs at login via launchd.

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Gen UI Playground

Tool-calling · Generative UI

Gen UI Playground

Structured tool-calling: the model outputs defined UI components directly to a canvas.

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Email Tone Analyzer

LLM · Communication

Email Tone Analyzer

Paste a draft, get a tone read. Helps you catch when you sound passive-aggressive before hitting send.

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