Flow DEX API

Endpoint

Parameters

Request

curl -H "X-Api-Key: YOUR_API_KEY" \
  "https://lab.flashalpha.com/v1/flow/dex/SPY"

import requests

resp = requests.get(
    "https://lab.flashalpha.com/v1/flow/dex/SPY",
    headers={"X-Api-Key": "YOUR_API_KEY"}
)
resp.raise_for_status()
data = resp.json()
print(f"Live net DEX: ${data['live_net_dex']:,.0f}")

const resp = await fetch(
  "https://lab.flashalpha.com/v1/flow/dex/SPY",
  { headers: { "X-Api-Key": "YOUR_API_KEY" } }
);
if (!resp.ok) throw new Error(`HTTP ${resp.status}`);
const data = await resp.json();
console.log(`Live net DEX: $${data.live_net_dex.toLocaleString()}`);

{
  "symbol": "SPY",
  "as_of": "2026-10-30T13:45:43.8290563Z",
  "underlying_price": 760.425,
  "expiry": null,
  "live_net_dex": -30692234816,
  "strikes": [
    {
      "strike": 50,
      "call_dex": 5036089,
      "put_dex": -175043.24,
      "net_dex": 4861045
    },
    {
      "strike": 55,
      "call_dex": 149360.62,
      "put_dex": -3324.12,
      "net_dex": 146036.5
    }
  ],
  "endpoint_version": "2026.09.30",
  "data_as_of": {
    "node": "fa5",
    "equity_feed": "2026-10-30T13:45:43.822Z",
    "equity_options_feed": "2026-10-30T13:45:43Z",
    "index_feed": "2026-10-30T13:45:43.102Z",
    "index_options_feed": "2026-10-30T13:45:42Z",
    "futures_feed": "2026-10-30T13:45:28.31Z",
    "futures_options_feed": "2026-10-30T13:45:27.486Z",
    "flow_feed": "2026-10-30T13:45:00Z",
    "oi_feed": "2026-10-29T20:00:00Z",
    "macro_feed": "2026-10-29T21:00:20Z"
  }
}

Response Fields

Errors

About Flow DEX

Flow DEX is the live counterpart to /v1/exposure/dex. The settled version uses morning OPRA-broadcast OI and stays frozen all day; this endpoint runs the same delta-exposure math on the OI simulator's effective open interest, so net DEX and the per-strike profile keep moving as positioning shifts. Use it to track directional dealer hedging pressure in real time.

Common Use Cases

• Read directional bias off live_net_dex - track the sign and magnitude intraday and flag the moment net DEX flips, marking a shift in net dealer directional positioning
• Estimate hedging flow with GEX - combine live_net_dex with live net GEX to size the share volume dealers must trade to stay delta-neutral as spot moves
• Detect skew from per-strike DEX - compare strikes[].call_dex vs strikes[].put_dex to surface call-skewed (upside-chasing) or put-skewed (downside-hedged) positioning
• Locate the directional center of gravity - scan strikes[].net_dex for the strikes carrying the heaviest directional exposure that price tends to gravitate around
• Diff against settled DEX - contrast net and per-strike DEX with /v1/exposure/dex to see where directional positioning has actually moved since the open
• Confirm GEX signals - use the DEX direction to corroborate a regime read from Live Flow GEX before committing to a directional trade

Related

Related reading

• Flow vs exposure endpoints: which GEX API to use - when to reach for live flow vs the settled exposure endpoints
• Effective open interest: live GEX from flow - the effective-OI methodology this DEX is recomputed on

Complementary endpoints

• Delta Exposure (DEX) - the settled morning baseline to diff this live DEX against
• Live Flow GEX - live gamma to pair with directional delta exposure
• Live Flow Levels - walls and flip that frame where directional pressure builds
• Flow Summary - a one-call digest of live positioning across the flow endpoints