Concepts
Freshness & caching
How often each dataset updates and how long you should cache.
Each reference page shows how often its data refreshes. There is no benefit in polling faster, and a cache on your side keeps you far from the hourly limit.
/v1/prices
Every trade; poll at most every 5 s.
/v1/coins, /v1/coins/{id}
10 s
/v1/coins/{id}/markets, /v1/global, /v1/liquidations
30 s
/v1/coins/{id}/ohlc, /chart, /v1/exchanges, /v1/dex, /v1/chains, /v1/market-status
60 s
/v1/categories, /v1/trending, /v1/new-coins, /v1/news, /v1/fear-greed, /v1/global/history, /v1/search
5 min
/v1/fear-greed/history, /v1/etf-flows
Daily (ETF flows after US close).
Timestamps: at and updatedAt are unix milliseconds; asOf is ISO 8601. All are UTC.