OpenTwo archives, queried live.
Every record below comes from The Met or Smithsonian Open Access and was filtered on that archive’s own rights field before it reached this page. 18 shown for “Andrea Palladio” — 64 records examined, 30 dropped by the rights gate.
Archives queried 2026-09-03 16:13 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
I quattro libri dell'architettura di Andrea Palladio . . .
Andrea Palladio · 1570
Prospetto Interno del Teatro Olimpico Nella Citta di Vincenza (View of the Stage of the Teatro Olimpico at Vicenza)
Andrea Palladio, Italian, 1518–1580 · ca. 1750
I quattro libri dell'architettura di Andrea Palladio
Andrea Palladio · 1570
Monument after Palladio with bust of Palladio and wolf with Romulus and Remus
Felice Giani, Italian, 1758–1823 · ca. 1810
Villa Barbaro, from I quattro libri dell'architettura di Andrea Palladio (Book 2, page 51)
Andrea Palladio · 1570
Altar and Tomb Design
Gilles-Marie Oppenord, French, 1672–1742 · 1749-1761
Portrait of the Caligrapher Andreas Gulden
Artist not stated in the record · 1653
The First Book of Architecture
Andrea Palladio · 1721
Sobralia andreae
Artist not stated in the record
I quattro libri dell'architettura di Andrea Palladio. Ne'quale dopo un breue trattato de' cinque ordini
Andrea Palladio · 1581
Sobralia andreae
Artist not stated in the record
Andropogon schlumbergeri var. andreae Hack. in A. DC.
Artist not stated in the record
Portrait of Andrea Palladio in half-length within an oval frame; a compass, carpenter's square, and plumb line rest on the plinth below the oval, from an unidentified edition of "Architecture de Palladio", revised by Giacomo Leoni and translated by Nicholas du Bois
Bernard Picart · 1716
The First Book of Architecture by Andrea Palladio
Pierre Le Muet · 1716
Design for the Base of the Monument to Andrea Doria
Baccio Bandinelli, Italian, 1488-1560 · mid-1530s
The Architecture of A. Palladio in Four Books containing a Short Treatise on the Five Orders (L'Architecture de A. Palladio en quatre livres... / Il quattro libri dell'architettura)
Andrea Palladio · 1715 [1716–20]
Architecture seen from below, design for plate 55 in Andrea Pozzo's "Perspectiva pictorum et architectorum"
Andrea Pozzo, Italian, 1642–1709 · 1685–1700
Design for a Corinthian Hall, in The Architecture of A. Palladio in Four Books containing a Short Treatise on the Five Orders (L'Architecture de A. Palladio en quatre livres... / Il quattro libri dell'architettura) (Volume 1, book 2, plate 28)
Andrea Palladio · 1715 [1716–20]
Where these records came from.
Two archives are wired, and only two. Each one is filtered on its own rights field — never on a title match, and never on the presence of an image file.
- The Met Collection API (Open Access)Rights field:
isPublicDomain. 24 matched · 24 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 2651 matched · 40 examined · 30 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.10 shown
These figures describe the pass run at 2026-09-03 16:13 UTC, during this request. A completed pass is kept for 24 hours and replayed for an identical search, which is what keeps repeated queries inside Smithsonian’s 30-requests-per-hour allowance. A pass in which either archive failed to answer is never kept — an outage must not be replayed as though it were a finding about the catalogue.
Wikimedia Commons and the Library of Congress are deliberately not wired. Wikimedia was confirmed, on a live query, to return CC-BY material inside the same result set as genuine public domain works, and filtering it safely has not been designed yet. loc.gov was blocked by bot detection during the source evaluation, so its rights vocabulary has never been observed — and nothing here is built on a field nobody has read.
An image file is a rights claim. It never travels without its field.