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/exchange-flows?hours=24"

Try it

EndpointOn-chain exchange flows: inflow, outflow and net (in − out) per exchange and asset over a window, from every scanned transfer into or out of the exchange’s own proof-of-reserves addresses (all sizes on Ethereum, Arbitrum and Base; large transactions on Bitcoin). Internal moves between two addresses of one exchange are left out. coverageFrom = first hour with data (earlier flows are unknown, not zero).

hours integer

exchange string

asset string

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.