THE SHORT VERSION
Gideon 0.5 reads from open data published by museums, libraries, and collector communities. Every source is credited here. We don't claim their data as our own; we cite it, link back, and respect each licence.
Wikidata ↗CC0 1.0
All 14 categories · cross-category baselineEntity-level metadata for every Gideon category. Images sourced via Wikimedia Commons live under per-file licences · reviewed before publication.
Open Library ↗CC0 1.0 (metadata)
BooksInternet Archive's open book catalogue. Covers served from covers.openlibrary.org as pointers.
MusicBrainz ↗CC0 1.0 (data) · CC BY-NC-SA 3.0 (some art)
VinylOpen music metadata. Cover Art Archive imagery rendered on demand subject to per-release licence.
Metropolitan Museum of Art ↗CC0 1.0 (Open Access only)
Art and DesignWe ingest only objects marked Public Domain (isPublicDomain=true). Primary images served from images.metmuseum.org.
Cleveland Museum of Art ↗CC0 1.0
Art and DesignCleveland's Open Access program · ~63K works with high-resolution CC0 imagery. Filtered to cc0=1 & has_image=1.
Art Institute of Chicago ↗CC0 1.0 (public-domain images)
Art and DesignAIC's REST API · we ingest only works flagged is_public_domain with a valid IIIF image_id.
Grand Comics Database ↗CC BY 3.0
ComicsCanonical series identifiers and metadata. Current Wave 1 ships a curated 20-series seed; full CC BY 3.0 dump ingestion is the Wave 1.5 follow-up.
United States Mint ↗Public Domain (US Govt)
CoinsUS coin series catalogue. Curated seed pending full API integration.
Smithsonian Open Access ↗CC0 1.0
Coins · supplementalNumismatic holdings + historical context. Paired with US Mint for the coins category.
pokemontcg.io ↗Free · attribution required · commercial OK
Trading Cards · Pokémon (English)Full English Pokémon TCG catalogue (~16K cards). Attribution: "Pokémon TCG data sourced from pokemontcg.io".
TCGdex ↗CC BY-NC 4.0
Trading Cards · Pokémon (Japanese + 10 other languages)Multi-language Pokémon TCG database (~16K cards per language). The Hoard ingests the Japanese set today; other languages available for future expansion. Non-commercial license · review before any monetised feature touches this data.
pokemon-card.com (via type-null/PTCG-database) ↗MIT (dataset) · attribution required · commercial OK
Trading Cards · Pokémon (Japanese - full catalogue)Complete Japanese Pokémon TCG catalogue (~22K cards incl. ex/SAR/secret rares) compiled from the official pokemon-card.com database. Card images and game content remain © The Pokémon Company; used nominatively for card identification. Dataset compilation under MIT.
Scryfall ↗Free · attribution requested · commercial: consider asking
Trading Cards · Magic: The GatheringMagic: The Gathering oracle_cards bulk dump (~30K unique entries). Crediting Scryfall + Wizards of the Coast. We will write to scryfall@ before public launch.
YGOPRODeck ↗Free · attribution requested
Trading Cards · Yu-Gi-Oh!Full Yu-Gi-Oh! TCG/OCG card database (~13K cards) mirroring Konami's official data.
TCG sports curated ↗Editorial · facts only
Trading Cards · SportsCurated grail-tier sports rookies (T206 Wagner, '52 Mantle, '79 Gretzky, '86 Jordan, '00 Brady, '03-04 LeBron). No free canonical API exists for vintage sports cards; TCGplayer partnership is the Wave 1.5 path.
Vintage Tech curated · CHM + cameras + audio ↗Editorial · facts only
Vintage TechCurated chronology of canonical computers, consoles, cameras, and audio gear. Computer History Museum + Canon Camera Museum + Smithsonian computing collections are the upstream references; real-API ingestion is a Wave 1.5 follow-up.
See a credit we've missed? Write to legal@thehoard.social and we'll fix it.