Tools, agents, and playful machines.

In-browser apps

fly a drone through a 3D gate course

chat with a language model that runs in your browser

search agent skills by what they do

play the bot, or hand the seat to a browser-run model or your own agent

markdown editor
Split-pane markdown editor — live preview, right-to-left aware, copy as HTML, Markdown, or rich text.
pdf editor
Open a PDF and mark it up — signature, text, pen, highlight, boxes, lines, images — plus rotate, reorder, delete, append and extract pages.
json ⇄ yaml ⇄ toml ⇄ toon converter
Convert between JSON, YAML, TOML, and TOON — auto-detects the input, points at the exact parse error, and shows the token-count savings of TOON's compact tabular arrays.
graphing calculator
Plot functions on an interactive canvas — pan, zoom, multiple expressions, shareable links.
json formatter & validator
Pretty-print, minify, validate — with precise error positions.
jwt encoder / decoder
Decode a JWT's header, payload and time claims — or encode and HMAC-sign a new token.

synthsound
A playable polyphonic synthesizer — two oscillators, ADSR, filter, delay, played with QWERTY or an on-screen keyboard.
beatssound
A 16-step drum machine — synthesized kick, snare, hat, and clap, with tempo and swing.
Local AImodel
Chat with a small language model that runs entirely in your browser — no server, no API key.
chessboard
A chessboard with an open seat for an agent — play the built-in bot, hand the seat to Edge AI (a small model that runs in your browser), or let your own agent take it through the site's WebMCP tools.
shader playgroundgpu
Living shaders — fbm flow, metaballs, grid warp, palette waves — reacting to time, mouse, and scroll.
postcardscanvas
Seeded generative art — type any seed and it paints the same piece every time.
skill oracleoracle
Semantic discovery across agent skills — search by meaning, ranked by trust and popularity signals.
fpv simflight
A first-person drone flight simulator — fly a quad through a course of gates with a game controller, on-screen sticks, or the keyboard.

The API key was always the weird partJul 16, 2026
Consumer AI subscriptions are starting to authenticate the apps you use — no developer key, no token bill. It's a real shift in who holds the meter, and it lasts exactly as long as the labs allow it.
You can't scale what you have to rememberJul 15, 2026
MCP is dropping the session. That reads as a loss until you remember why every protocol that mattered ended up stateless — and what it actually costs to get there.
The control question already has an answerJul 8, 2026
The argument over whether capable AI systems could be kept in check is effectively over. It wasn't won — the careful people just stopped holding the line, and an unattended ransomware agent showed what that costs.

inkjet ↗
2,824 downloads
Open-source CLI for pocket Bluetooth thermal printers — text, images, and QR codes from the terminal. Ships an agent-first SKILL.md so AI agents can discover and drive it autonomously.