Lucianlabs — AI workbench

I build tools for
working with AI. Then I write it down.

I write about working with AI coding agents like Claude Code and Codex: the numbers I measured, how each experiment went, and what failed. Every tool I write about is free to use.

Notes

Recent notes10

How my tools work, numbers from experiments, and what went wrong along the way.

Tools

Tools I built7

Tools I built because I needed them while working with AI. All free; install steps and source code are on each project page and on GitHub.

All repositories
Plugin · Claude Code

PromptFilm

Describe it. Get a 3D film.

A Claude Code plugin that researches, plans scenes, builds a 3D HTML film that plays in the browser, reviews it and exports MP4.

FreeLearn more
400 templates

Lucian UX/UI Prompt

Try the interface. Take the prompt.

An interactive gallery of 400 UX/UI elements, from buttons and charts to hero, pricing and form animations. Copy the prompt or the working code.

FreeLearn more
Chrome extension

AI Chat Exporter

Hand off a long AI chat

Hand off ChatGPT, Claude, Gemini and Grok chats to another AI, or export them to PDF, Markdown, Word and HWPX. Everything runs in your browser.

FreeLearn more
Skill · Claude Code

claude-next

Keep your current task moving

Leave follow-ups with /next while Claude works. Each runs in its own turn after the current task ends.

FreeLearn more
Skill · Codex

Codex Token Xray

See where your tokens go

Reads real session logs to show how much tool output, skill bodies and instructions take up, then proposes changes before applying them.

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Skill · Codex

Astra Xray

Make your skills and instructions count

Finds truncated skill descriptions, duplicates and outdated instructions, then backs up and cleans only what you approve.

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Safety hook · Codex · Rust

DELETE-DENIED

Before an important folder is deleted

Inspects terminal deletion commands from Codex and blocks requests that would wipe a protected parent folder.

FreeLearn more

Films

Films3

Made with PromptFilm. Scenes are planned around real figures from public sources.

Read about the films
02:34 · 1:1

Blackwell

From the data center down to a single atom

00:49 · 9:16

New Element

Rebuilding the new-element scene from Iron Man 2

Side projects

Side experiments

Web apps I made to check things I was curious about, separate from the AI developer tools.

Web app

Saju Lab

A gentle way to explore Saju

Calculates the calendar in your browser without an account and explains your reading in plain words and cards.

Opens in a new tabOpen site

Claude Code beginner practice files

Sample client files, a finished dashboard and a step-by-step demo for building a work dashboard by asking in plain words. Free, no sign-up.

Get the files

Hi, I’m Lucian.

I build the tools I need for working with AI agents and share what I learn using them. Corrections and ideas are always welcome.

About me