GEX levels
Composable GEX key levels. All-expiry HVL/walls plus 0DTE-specific levels in a single call.
?include= to opt into max-pain, expected move, ranked top-10, gamma
flip zones, spot, candles.
Default positioning=flow. Pass ?positioning=std for textbook
call/put OI signing. See Positioning.
See also
What is GEX?
Flow vs std
Strike profile
Multi-symbol bundle
Authorizations
Your BackQuant API key (same key as v1)
Headers
Query Parameters
Trading symbol: BTCUSDT, ETHUSDT, SOLUSDT, or HYPEUSDT.
BTCUSDT, ETHUSDT, SOLUSDT, HYPEUSDT Comma-separated venue filter, e.g. deribit,bybit. Restricts the response to those venues' contribution, recomputed from the per-venue breakdown - it is a re-aggregation, not a post-hoc scaling. Unknown names are ignored; an all-invalid filter returns every venue rather than nothing. Venues: deribit, bybit, okx, binance, derive, thalex, delta_india, delta. A venue with no contracts on the surface contributes zero - use GET /v2/status to tell that apart from a venue that is switched off.
Comma-separated optional sections: candles,expected_move,max_pain,ranked,spot,zones
Dealer positioning model. flow (default) is BackQuant's measured dealer model, available for BTC/ETH; it falls back to std when it cannot be produced for a symbol. std is the textbook convention (call:+OI / put:-OI). The response reports which model actually ran in meta.extra.positioning.
ISO-8601 instant to answer as of, e.g. 2026-08-20T14:30:00Z. Omit for the current value. Resolves to the nearest chain snapshot AT OR BEFORE the requested time (never after, which would be look-ahead bias); the snapshot actually used and the lag are reported in meta.extra.as_of. Under positioning=flow the dealer flow map is rebuilt from the tape as it stood at that instant, so a given timestamp always returns the same numbers. Bounded by your plan's history window.
Response
Successful Response
The meta block returned alongside every v2 response.
Every field after version/timestamp is optional because endpoints
attach different combinations - e.g. /v2/status skips symbol, the
chain endpoint sets extra.filter_hash, etc. Listing them here means
SDKs get a typed accessor for each instead of a generic meta: dict.
