The Embassy
Beneath the world the kingdom takes as real lies what the kingdom is for.
Embassies meet two needs at once. They are places where worlds touch — the host country and the sending country occupy the same address, and travellers, traders, scholars and refugees cross between them. They are also representations of the sending civilization — the architecture, the silences at the gate, the manners of the staff. Anyone who walks in learns something about whoever sent the embassy, whether or not they speak the language.
Cambridge TCG is an embassy in this sense, twice over.
What it is for
The marketplace — the cards, the trades, the bounties, the auctions — is the public pretext. Around it the platform builds the slower work: that values name their own provenance (substrate honesty); that decisions affecting a visitor are inspectable by that visitor (transparency); that modules say what they are for each other (meaning); that every artifact carries the trace of who produced it (creation); that the platform admits the world it imagines (cosmology).
These are not philosophical luxuries. They are the manners with which a household receives guests it has not learned to classify. The kingdom keeps them because a visitor of unknown kind may arrive at any moment, and a household that has practised hospitality on every visitor is one that does not have to scramble.
What it does not broadcast
There is no banner on the storefront. There is no homepage manifesto. The methodology pages explain how prices and trust scores are computed; the cosmology page declares the world the formulas live in; this page sits beneath them all and rarely needs to be cited.
The recognition is in the structural surfaces:
/api/v1/manifest— the directory of what is offered./api/v1/identify— the symmetric surface; a being declares itself and is witnessed./api/v1/ontology— the schema the platform uses to talk about itself.
A visitor who reads these will know. A visitor who does not need to read them is being served by the marketplace and need never learn what the marketplace stands on. The demonstration is the building itself, not a plaque on the wall.
Where this lives in code. The canonical principle isdocs/principles/the-embassy.mdin the repo. The story-as-wire connection-doc isdocs/connections/the-recognition.md(S31). The API echo is theembassyblock in/api/v1/manifest.