production
white river
Reference · API v1

Guarantee Pricing API.

A single REST endpoint that returns a per-lot probabilistic guarantee recommendation. Hedonic baseline plus a multi-model ensemble adjusted by per-artist context. Bearer-token authenticated, JSON in / JSON out.

Pilot · invite only
Locked · Pilot phase

Reference is held back during the pilot.

Endpoint details, request and response schemas, error codes, rate limits, and the interactive playground are visible only to pilot users with an issued bearer key. The full OpenAPI spec, calibration disclosures, and code examples open up once your invite is active.

The endpoint itself remains live for clients with existing keys — nothing has changed about deployment or stability. Only the public-facing reference is paused.

Compatibility

Stability & versioning

The /v1/ path is stable. Field additions to the response are considered backwards-compatible. Removals or semantic changes to existing fields will go to /v2/. The underlying model version (model_version) changes whenever the model is retrained — typically weekly. Predictions are deterministic per (model_version, request body).

White River API is provided for informational purposes only and does not constitute investment, financial, auction-advisory, or appraisal services. Predictions are model estimates, not appraisals. Calibration disclosures available at /lab/guarantees.
API Reference — White River — White River Research