API explorer

Pick an endpoint, fill in parameters, send. Requests run on our server through the real API, with your own key when you are logged in or without a key on the free tier. No key ever reaches the page.

Request

curl -s -H "X-Blockmetric-Access: public" \
  "https://api.blockmetric.io/v1/flow/BTC?hours=24"

Try it

EndpointTaker flow of one coin: buy / sell volume of the aggressor per bar, delta and cumulative volume delta (CVD), summed over the perpetual venues, per venue (Binance spot separately where collected), by print size (under $10k, $10k–100k, $100k–1M, $1M and more; a print = the fills of one taker order) and for tracked Hyperliquid whales (USD they bought minus sold, either side of the trade), plus the volume profile (taker volume by price, point of control, 70 % value area) of the window. Free keys: BTC, ETH and HYPE, last 24 hours. Coins without a Hyperliquid market answer 404. Licence review: byVenue shows Hyperliquid only; total, bySize and the profile still sum every venue, in bars of at least 5 minutes (venue=hyperliquid keeps 1-minute bars); venue=binance|bybit answers 403 source_restricted.

coin * string

venue string

hours integer

stepMinutes integer

Keyless free tier: 24 h of history, a few requests a minute per address.

Get a free key for 30 days of history and your own limits.

Choose an endpoint, fill in parameters and send. The response appears here with its status, headers and timing.

Parameters, response fields and a real example of every endpoint: API reference.