The Avena Engine.
Every deal score on this site is produced by the infrastructure below: an open methodology, cryptographic proof, two world-first AI instruments, open standards, and an event-sourced architecture — Europe's deepest technical data infrastructure for property. This page is the door. Everything behind it is live.
Every weight published: Avena Score, hedonic AVM (±3% RMSE backtest), APCI cycle index. Version-controlled, audit-trailed.
Every weight set ever shipped, with rationale. Nothing edited silently.
Machine-generated daily disclosure of what Avena does NOT know. Honesty as architecture.
The daily AI panel on European property — the first longitudinal record of machine beliefs about a real asset class.
The European Property AI Benchmark — major AI models scored daily against institutional ground truths.
DELPHI: A Daily Longitudinal Survey of Machine Beliefs About a Real Asset Class (Kolstad, 2026).
APIP v1.0 data exchange, AVP attestations, APON network — open standards, convened by the Avena Foundation.
The ISIN of European property: permanent identifiers with signed credential chains.
CC BY 4.0 dataset · DOI 10.5281/zenodo.19520064 · DCAT-AP catalogue · daily git mirror.
REST + MCP + webhooks, OpenAPI 3.1. One key, every surface. npm and PyPI clients.
Memo Engine, AVM, Portfolio Risk, Index Family. Desk €2,500/mo; free designated-authority tier.
Regulatory radar, Monte Carlo scenarios, developer credit stress, policy engine — every signal surface.
Architecture, event sourcing, defensibility, causal graph. The technical truth before you ask.
The full live cockpit — indices, anomalies, validation, briefings.