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BUILD / 04.0200HORIZONTHE SEAM

API

A read-first HTTP interface over public objects. Stable identifiers, explicit provenance, no undocumented fields.

The API is the honest edge of the world. Anything you can see in the interface, you can request as data, subject to the same permissions.

Provenance travels with the payload: what produced a value, when, and whether a person or a model asserted it.

Shape of a response
GET /v1/objects/{id}
{
  "id": "obj_...",
  "kind": "organization",
  "asserted_by": "person" | "model",
  "asserted_at": "2026-08-13T02:09:22Z",
  "provenance": [{ "source": "...", "method": "..." }]
}
FACTS
TRANSPORT
HTTPS, JSON
AUTH
Per-key scopes, revocable, audited
IDENTIFIERS
Stable, opaque, never reused
ERRORS
Typed codes with a documented remedy
REFUSALS
  • No breaking change without a dated notice window.
  • No undocumented field in a public response.
  • No inference presented as a fact without its source.
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