We're building the most comprehensive crypto data API we can, and it's still growing — there's always a coin, a field or an endpoint we haven't got to yet.
Please tell us about any data you think Crypto Data API should nail but doesn't. We're data nerds who love to geek out about market data, trading bots, AI agents, or how to make your trading stack work in general. Prefer a form? Send feedback.
— Sam and the CDA team
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Your agent just pulled live funding and open-interest data for a user about to trade. Where does it send them to actually open the account — and how does it avoid hallucinating the link?
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An agent that only sees price is guessing. Candles tell it where price has been, funding tells it what positioning costs, open interest tells it how crowded the trade is. Three calls, one key.
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Most crypto news feeds tag sentiment on everything. Ours filters hundreds of daily stories down to real catalysts, then measures whether price actually moved.
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Price is the last thing to move. By the time a candle breaks out, the volume that caused it has usually been building for hours. Here's how to screen for that instead.
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Binance reported 2,430,666 and Hyperliquid reported 694,339 for the same asset today. Neither number is dollars. Here is the endpoint, the unit conversion, and how to read the trend.
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One GET returns 1,000 hourly bars with eleven fields each. Here is the exact call, what every field means, and the one trap that silently corrupts the last row of every indicator you compute.
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Almost nobody pays Hyperliquid's sticker-price fee. Here's exactly how the 4% referral discount and HYPE staking tiers combine — and the volume cap most guides don't mention.
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Every chart tutorial tells you to "draw lines where price reversed." That's a judgment call with no two traders agreeing. Here's the same idea as a deterministic pivot-clustering algorithm your bot can call over HTTP.
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Unlock lists are everywhere, but most don't say whether the unlock actually matters. This API prices every cliff against a coin's own float and market cap, and admits what it doesn't know.
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On 20 August a White House crypto event moved BTC 10% and liquidated billions in shorts. Our news scanner produced zero events. The liquidation tape had already printed a 334x cascade 23 minutes earlier.
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2026 was the year the crypto data industry took free access away. CoinDesk Data retired its free tier outright on 21 May. CoinGlass still has no free API at all. We spent the same year going in the opposite direction — and sizing the free tier around the AI agent instead of the human at a dashboard.
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Everyone sizes down when volatility spikes. We joined 921 real trades to the daily crypto volatility index, found the opposite - then spent three rounds of testing on 107 wallets watching the answer reverse twice. Here is what survived.
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