{"uid":"cap_4njKPir7A05gXga1k2k3m","slug":"saylor-innovations-coin-denomination-reference-c80d79c1","name":"Saylor Innovations Coin & Denomination Reference","description":"Coin and denomination reference - issuing countries, materials, designers and images (Wikidata)","url":"https://saylorinnovations.com/api/numismatics/coin?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["name"],"properties":{"name":{"type":"string","description":"required coin or denomination name, 2-100 plain-text characters (query)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["found","name","wikidata_id","countries","materials","caveat"],"properties":{"name":{"type":"string","description":"Name"},"found":{"type":"boolean","description":"True when the lookup matched a record"},"image":{"type":["string","null"],"description":"Image URL"},"query":{"type":"string","description":"The query as the server interpreted it"},"caveat":{"type":"string","description":"Caveat to keep in mind when using this result"},"source":{"type":"string","description":"Data source the values come from"},"countries":{"type":"array","items":{"type":"string"},"description":"Countries"},"designers":{"type":"array","items":{"type":"string"}},"inception":{"type":["string","null"],"description":"Date the entity was founded or created"},"materials":{"type":"array","items":{"type":"string"}},"wikipedia":{"type":["string","null"],"description":"Wikipedia article URL"},"description":{"type":["string","null"],"description":"Short description"},"wikidata_id":{"type":"string","description":"Wikidata identifier"},"alternate_matches":{"type":"array","items":{"type":"object"},"description":"Other candidate matches"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_e8aT9WBTfhRjPhhzl5x5o","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up reference data for a coin or denomination by name, returning issuing countries, materials, designers, and image URLs sourced from Wikidata","exampleAgentPrompt":"Can you look up reference info on the Morgan silver dollar — I want to know what countries issued it, what it's made of, who designed it, and if there's an image available?","exampleUseCases":[{"title":"Identifying a coin's metal composition","prompt":"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?"},{"title":"Researching coin designer for an article","prompt":"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?"},{"title":"Enriching a numismatic catalog entry","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:54:10.839Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-coin-denomination-reference-c80d79c1"}