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Saylor Innovations Coin & Denomination Reference
x402
Saylor Innovations Coin & Denomination Reference is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).
Looks up reference data for a coin or denomination by name, returning issuing countries, materials, designers, and image URLs sourced from Wikidata
Price / call$0.01
Success—
StatusUnknown
How this service works
Coin and denomination reference - issuing countries, materials, designers and images (Wikidata)
Output
A JSON object indicating whether the lookup matched a record, along with the coin's canonical name, Wikidata identifier, issuing countries, materials, designers, image URL, short description, inception date, Wikipedia URL, the interpreted query, a data caveat, the source, and any alternate candidate matches if ambiguous.
Example use cases
Identifying a coin's metal composition
“I found an old coin labeled 'Florin' — can you look it up and tell me what metal or alloy it's made from and which countries issued it?”
Researching coin designer for an article
“I'm writing about the history of the American Buffalo gold coin — can you find out who designed it and when it was first minted?”
Enriching a numismatic catalog entry
“I'm building a coin database and need the Wikidata ID, Wikipedia link, and a photo URL for the Byzantine solidus — can you pull that up?”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/numismatics/coin?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured reference data about a specific coin or currency denomination — including its issuing countries, metal composition, designer, and imagery — especially when building numismatic catalogs, enriching coin descriptions, or answering historical currency questions. Prefer this over general web search when you need structured Wikidata-backed fields rather than free-text paragraphs.
Side effects
- No match found (found: false) when the coin name is misspelled or too obscure for Wikidata coverage
- Ambiguous name returns alternate_matches instead of a definitive result
- Image URL may be null if Wikidata has no associated image
- Inception date may be null for ancient or poorly documented coins
- Caveat field warns of data quality limitations from Wikidata source
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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