Data API

Free, read-only, no key. Everything comes from the same tables that power this site. Attribution required: show "Data: Coinucation" with a link to coinucation.com where the data appears.

Endpoints

• GET /api/coins: search index of covered coins (id, name, symbol, rank, image).
• GET /api/coins/quotes?ids=bitcoin,ethereum: latest price, 24h and 7d change, market cap, volume, 7-day sparkline for up to 200 ids.
• GET /api/coins/history?ids=bitcoin&days=365: daily closes for up to 30 coins (7 to 730 days).
• GET /api/ticker: a dozen majors with price and 24h change.
• GET /feed: RSS of market wraps, analysis and headlines; /headlines/<category>/feed per category.

Example

curl "https://coinucation.com/api/coins/quotes?ids=bitcoin,ethereum"

Machine-readable

• OpenAPI 3.1: /openapi.json
• API catalog (RFC 9727): /.well-known/api-catalog
• Access notes for agents: /auth.md
• Site map for AI search: /llms.txt

Limits and freshness

About 60 requests per minute per client. Top 300 coins refresh every 20 minutes, ranks 301 to 1,000 every two hours, ETF flows daily. Responses carry cache headers; respect them. Heavy or commercial use: email editorial@coinucation.com.

Coming

ETF flow, gas and treasury endpoints, CSV downloads, and a documented free tier with keys for higher limits. See the methodology for how each series is built.