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Real-time Ethereum whale wallet tracking, DEX trades, net flow, and conviction scoring.
Deep Blue Alpha API is a free Cryptocurrency API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
REST API for Ethereum whale flow: 20,000+ tracked wallets, exchange in/out + DEX swap labels, 6 endpoints. Whale: 25K calls/day, $49.99/mo (founder rate). Business: 250,000 calls/day, webhooks, daily files.
Details from deepbluealpha.io.

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Hyperliquid funding on every dex (HIP-3 incl.), cross-dex spreads, event feed; free trial key
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The Deep Blue Alpha API is provided by Deep Blue Alpha (deepbluealpha.io). REST API for Ethereum whale flow: 20,000+ tracked wallets, exchange in/out + DEX swap labels, 6 endpoints. Whale: 25K calls/day, $49.99/mo (founder rate). Business: 250,000 calls/day, webhooks, daily files.
Yes. The Deep Blue Alpha API is listed in the Cryptocurrency category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Deep Blue Alpha API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The Deep Blue Alpha API supports CORS, so front-end JavaScript can call it directly.
Yes. The Deep Blue Alpha API is served over HTTPS, so it's safe to use in production.