Level lifetime sample count
Updated
What is Level lifetime sample count?
Level lifetime sample count is a market-data metric that BlackForge measures for every listed pair on the major spot exchanges, in real time. How many price levels both appeared and disappeared inside the window: the sample behind the median level lifetime. It reports what the order book or trade tape showed, not what price will do next.
The facts
| Unit | count |
|---|---|
| Family | Book churn |
| Key | levelLifetimeSampleCount |
| Quote-relative | No |
| Nullable | Yes |
| Plottable | Yes |
| Available from | Max plan |
Live across every venue
Level lifetime sample count for BTC-USDT, as measured in the latest closed window on each venue. Observed . A venue with no reading for this window shows n/a. Nothing is invented.
| Venue | Symbol | Level lifetime sample count |
|---|---|---|
| Binance | BTCUSDT | 3,820 |
| Bitget | BTCUSDT | 4,164 |
| Bybit | BTCUSDT | 1,662 |
| Coinbase | BTC-USDT | 814 |
| Gate | BTC_USDT | 1,715 |
| Kraken | BTCUSDT | 3,408 |
| Kucoin | BTC-USDT | 412 |
| Mexc | BTCUSDT | 11,419 |
| Okx | BTC-USDT | 2,089 |
Query it
Level lifetime sample count is one field on the wide row /v1/latest returns for a pair. Set $BF to the API base and read it at .values.levelLifetimeSampleCount:
curl -H "x-api-key: $BLACKFORGE_API_KEY" \
"$BF/v1/latest?exchange=binance&symbol=BTCUSDT"
# read the value at: .values.levelLifetimeSampleCountRelated
Liquidity added and removed, price levels changed, and how long a level survives before it is pulled.
Defined in the glossary: Liquidity added and removed, Resting order lifetime.
← All Book churn and every other metric · Coverage by venue
What is Level lifetime sample count?
Level lifetime sample count is a market-data metric that BlackForge measures for every listed pair on the major spot exchanges, in real time. How many price levels both appeared and disappeared inside the window: the sample behind the median level lifetime. It reports what the order book or trade tape showed, not what price will do next.
How is Level lifetime sample count measured?
BlackForge computes Level lifetime sample count from each venue’s own order book and trades for every listed pair, in real time, and records it as count. The value is stored exactly as observed.
Which plan includes Level lifetime sample count?
Level lifetime sample count is available from the Max plan upward, and on pay-per-call over x402. See pricing for the full plan ladder.
Does Level lifetime sample count predict where price will go?
No. Level lifetime sample count is a measurement of what the order book or trade tape showed in the window. It carries no view on future price, and BlackForge scores nothing: every metric is a measurement, not a call.