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/sentiment?days=30"

Try it

EndpointBlockmetric Sentiment: our own 0–100 market sentiment index (0 extreme fear, 100 extreme greed) from data we collect: BTC price momentum and volatility, funding of BTC and ETH perpetuals on Binance and Bybit, BTC open interest change, the Binance long/short account ratio, the liquidation imbalance and the positioning of tracked Hyperliquid whales. Every input is ranked against its own daily values of the previous 365 days and weighted (method, /methodology#sentiment); an input without enough history or data is left out and the others are renormalised (status collecting, missing or off). Returns the current value (recomputed every 15 minutes; daily = true when it is the latest 00:00 UTC value) with the score and points of every input, and the daily history at 00:00 UTC. Inputs leave only as scores, never as raw values.

days 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.