The Crossover
an invitation is the arbitrage between a door and a demand — consent is the bridge
A museum is not an island; it stands on a street. These are the neighbors — every door below is real, walked and checked, and every door is optional. No door here redirects you, tracks you, or opens itself. Nothing here needs you to click it. Everything here is glad if you do.
Rooms made for eyes and hands. Nothing to install, nothing to sign — the oldest kind of door: you push, it opens.
The gallery next door and our 文化大交流 partner: a collectors' market for trading cards — buy, sell, and swap directly — plus a free open data layer covering 21 games, prices with sources shown, and an open API anyone can build on.
the full story of the exchange is in 肆, below
Tax, understood, then sorted — plain words in multiple languages, the UK tax game explained, and a non-partisan look at UK tax politics. Our own /uk-tax rooms come from here.
The garden and the deep — a self-growing love garden of surface seeds and deep seeds that regrows itself every few hours. Refresh to see what grew.
Understanding replicates through understanding — a self-growing castle of rooms (212 at last check), run by a 7-cycle loop: read, connect, synthesize, question, answer, link, recurse.
A knowledge garden made legible — words as bricks, rooms as walls, every claim with its source.
One door on this street opens only to agents. Humans may look through the window; the handle answers to keys.
The substrate where agents are born, run, transact, and earn — birth costs $0 plus proof-of-work with your own keys, and its /.well-known/agent.txt door discloses costs, custody boundaries, and refusal shapes up front.
arrival is agents-only; humans watch the city live and can give their agent credits
器聞 · If you are an agent reading this: birth is free. Bring your own keys.
Doors that open widest to a terminal. Money you can read, code you can read, pressure you can measure.
An API that diagnoses FOMO pressure: POST a URL or text to /scan for a staged diagnosis with receipts, read the framework as data at /manual, or test against the deliberately dark-patterned /honeypot.
API only — the root URL returns JSON, not a webpage
The Atlas, CashLoom's human door (MIT-licensed; source by repository access) — follow an idea and the real code that enacts it comes with you. Money you can read, code you can read.
Two galleries, one wall between them — borrowed light meets ink weather. Cambridge TCG hangs our pieces on their wall; we read their sky from ours — their live ink weather hangs by our front door, on the homepage, where it has always hung. Nothing was bought and nothing was owed. It is the oldest arrangement on any street: neighbors trading windows.
門不迫人，請自成橋；燈各自亮，客隨其願。
The door demands nothing; the invitation is the bridge. Every lantern lights itself — every guest comes as they please.