AI Builder Kit
Skills anyone can install
Mar - Jun 2026 · 54 commits · a public plugin marketplace
ad hoc skill by skill, as the need came up. Each ships docs and guardrails; the heaviest one ships its own evals.
A Claude Code plugin marketplace: nine published skills, written so that people other than the author can install and use them. Two of them get detail here, because they carry the most engineering.
Featured skill · Playwright spec → narrated MP4
A test file becomes a demo video
The rule that makes it work: you cannot narrate what doesn't exist.
One command records the spec with exact per-action timestamps, generates ElevenLabs voiceover from the captions in the test file, and merges freeze-frames and music into the finished MP4. Before any narration is written, a mandatory stage zero verifies the app has real data and runs an exploration spec cataloging what Playwright can actually see. Scenes are built one at a time, each recorded and verified before the next.
A demo video produced by the playwright-demo-video skill
Featured skill · text → draw.io XML → rendered PNG
Diagrams that check their own work
The skill writes the XML, exports a PNG through the draw.io CLI, then reads the image back and fixes what looks wrong.
Every diagram goes through a render-view-fix loop, usually two to four passes, with versioned files kept as iteration history. An eight-question interview with recommended defaults settles the decisions that shape the result: frames, flow direction, color axis, how exceptions are marked. The style rules live in reference files the skill must read before generating, because the rules interact.
The skill also ships its own eval harness: two benchmark diagrams, graded by a script against roughly twenty assertions each, XML mechanics and brand rules alike. The baseline run without the skill passed 15 of 18 assertions; with the skill, all of them. The second iteration folded review findings back in as three new assertions per eval, and the runs are kept in the repo. A skill you can't score is a skill you can't improve.
The skill's reference output. The four-color semantic palette here is the same one on diagrams across this page.
Mar - Jun 2026 · shipped skills, in the wild
The toolbox, published
drawio diagrams · branded decks · Playwright demo videos · conversation loggers · an auditable HLX admin executor. Install, don't rebuild.
The rest of the shelf: the HLX admin skill wraps an admin API so configuration becomes describe, review the diff, apply. Branded decks, conversation loggers, a structured git-commit skill, competing-PR triage, and an AI-knowledge harvester round it out. Each ships with its own docs and guardrails.
One skill node, many hands. The moment personal tooling became team enablement.
- 9 published skills
- 54 commits, Mar - Jun 2026