The Observatory
Instruments built with Claude Opus 5.5
Four instruments · one day

Built with Claude Opus 5.5

Each of these was designed and written with Claude Opus 5.5: a live globe of the planet’s signals, a command centre for watching AI agents work, a galaxy you can fly through made from source code, and five thousand years of history on one planet. They run in your browser, with no sign-in.

04instruments5live public data feeds0build steps · plain HTML
InstrumentsOpen one ↓
Live feedsISS · 51.6°
01 · PLANET

Earth Pulse

A cinematic 3D globe of what the planet is doing right now: earthquakes, wildfires, volcanoes, storms and the ISS, with a real satellite view of each event and a 24-hour replay.

DATAUSGS earthquakes & ShakeMaps · NASA EONET events · NASA GIBS imagery · Where the ISS at? · Open-Meteo

Open the globe
ReplayHuman in the loop
02 · AGENTS

Agent Mission Control

A multi-agent AI run replayed as a space-station command centre. You can scrub through every tool call, handoff, error, cost and human approval.

DATASimulated agent runs on the public FastAPI repo · import your own trace JSON

Enter the command centre
1,210 files1,441 imports
03 · CODE

Codebase Galaxy

The FastAPI repository as a galaxy you can fly through. Files are stars, imports glow as filaments, tests orbit as moons, and hotspots pulse red. Trace a request or replay the last 500 commits.

DATAA scan of github.com/fastapi/fastapi (MIT) · git history

Fly the galaxy
1,361 events3200 BCE → today
04 · HISTORY

Anno Mundi

Five thousand years of history on one planet. Scrub a timeline from the first writing in Sumer to today and watch wars, elections, revolutions and crashes ignite where they happened, with historical borders, voyages drawn across the oceans, 21 guided stories and an interactive card for every event.

DATA1,361 curated events up to 2026 · live Wikipedia images & extracts · historical-basemaps borders

Travel through time

A small collection of instruments for looking at things that are usually hard to see.

  • Everything is static HTML, CSS and JavaScript. The 3D rendering uses three.js.
  • Earth Pulse reads public APIs directly from your browser. If a feed is unavailable, it falls back to a bundled snapshot.
  • On claude.ai, the apps can also call Claude to write briefings. On this site those features stay hidden.