The product · the registry
Open models, under one validation bar.
Models as first-class objects: declared inputs, carded outputs, deterministic against pinned snapshots. Measured, never ranked.
Compose a model → Try the walk in a browser →
Backdrop: a Gigantic Jet above a thunderstorm, photographed from the ISS, 3 July 2025 — NASA, public domain.
The builder
Four primitives, no code
A v1 model is a composition and nothing else: pick a pinned feed, a measurement to read off it, a transform to shape it, and a payout function — and the platform validates the whole before the model exists at all.
The bar
Validated before it exists, immutable once published
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Schema conformance and determinism
A model that cannot produce the same bytes twice against the same pinned snapshot is refused before anyone can run it.
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A forty-year backtest and degenerate-case flags
Every model is replayed across the pinned record on creation, and flagged if it always pays or never pays.
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A model card, automatically
Assumptions, limitations, license and authorship travel with the model, and every result is labelled with the model and version that produced it.
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Versions, not edits
A published model never changes; a change is a new version. Model runs bill as usage like any verb — the caller pays, and authors are never charged for use of their models.
Live today
The routes are serving; the public listing is not
GET /primitives, POST /models and
POST /models/{model_id}/runs compose, validate and run a model on
this build. A model stays private to its author until it is published, and nothing
is published here yet — so this page shows you the machinery, and declines to
invent the marketplace. When there are live figures to print, they will be printed
as measurements.