# GET /api/mcp/data/cross-index-gex > Which index has the most negative dealer gamma today? Runs the GEX calculation for each index ETF and returns a comparison table of total exposure, normalized exposure and flip level, with the full per-index payload underneath. - **Family:** Gamma exposure (https://apexvol.com/developers/gamma-exposure-api) - **Plan:** Premium and above. Every call needs `Authorization: Bearer avmcp_`; tokens are issued to paid and trial accounts under Account, then API Access. - **Units:** total_gex in dollars per 1% move; normalized_gex divides by market value so indices compare. - **Basis:** Same dealer convention and aggregation as /gex, per ticker. - **MCP tools:** `get_cross_index_gex` - **Background:** https://apexvol.com/learn/gamma-exposure-explained ## Parameters | Name | In | Default | Range | Meaning | |---|---|---|---|---| | `tickers` | query | SPY,QQQ,IWM,DIA | CSV of index ETFs | Which indices to compare. | ## Request ```bash curl -H "Authorization: Bearer avmcp_YOUR_TOKEN" \ "https://apexvol.com/api/mcp/data/cross-index-gex" ``` ## Response (captured 2026-09-08) Real response, lists cut to the rows nearest the money. The envelope is `{"success": true, "data": ...}`. ```json { "success": true, "data": { "comparison": { "DIA": { "flip_level": 549.4243, "normalized_gex": 109665.9343, "stock_price": 533.74, "total_gex": 58533095.7487 }, "IWM": { "flip_level": null, "normalized_gex": -7440286.7267, "stock_price": 295.82, "total_gex": -2200985619.4867 }, "QQQ": { "flip_level": null, "normalized_gex": -32228.4822, "stock_price": 718.88, "total_gex": -23168411.3125 }, "SPY": { "flip_level": null, "normalized_gex": -4194083.4797, "stock_price": 770.25, "total_gex": -3230492800.2033 } }, "indices": { "DIA": { "call_gex": 408125500.9471, "expirations_horizon_days": 90, "expirations_included": 9, "expirations_through": "2026-11-20", "expirations_total": 20, "flip_degenerate": false, "flip_level": 549.4243, "gamma_flip": 549.4243, "gex_ratio": 1.1674, "implications": { "directional_bias": "Balanced (call/put GEX 1.17)", "net_to_gross": 0.0772, "pin_at_spot": false, "positioning": "largest strike $540.00 (+1.2%); call wall $540.00 (+1.2%); put wall $530.00 (-0.7%); flip $549.42 (+2.9%)", "regime_code": "balanced", "support_resistance": "Flip at $549.42 (2.9% above spot): hedging amplifies moves below it, dampens above", "volatility_regime": "Balanced GEX (net 7.7% of gross, no dominant side)" }, "key_levels": { "call_wall": 540.0, "call_wall_unconstrained": false, "call_wall_value": 75356308.6812, "flip_degenerate": false, "flip_level": 549.4243, "key_strike": 540.0, "key_strike_net": 68976896.8278, "max_pain": null, "put_wall": 530.0, "put_wall_unconstrained": false, "put_wall_value": 44256843.2937, "spot": 533.74 }, "max_gex_strike": 540.0, "normalized_gex": 109665.9343, "put_gex": -349592405.1984, "stock_price": 533.74, "ticker": "DIA", "total_gex": 58533095.7487, "total_gex_billions": 0.0585 }, "IWM": { "call_gex": 2098181483.3277, "expirations_horizon_days": 90, "expirations_included": 16, "expirations_through": "2026-11-20", "expirations_total": 30, "flip_degenerate": false, "flip_level": null, "gamma_flip": null, "gex_ratio": 0.488, "implications": { "directional_bias": "Put-heavy (call/put GEX 0.49)", "net_to_gross": -0.344, "pin_at_spot": false, "positioning": "largest strike $290.00 (-2.0%); call wall $300.00 (+1.4%); put wall $290.00 (-2.0%)", "regime_code": "negative", "support_resistance": "--", "volatility_regime": "Negative GEX (dealers amplify moves)" }, "key_levels": { "call_wall": 300.0, "call_wall_unconstrained": false, "call_wall_value": 354716869.761, "flip_degenerate": false, "flip_level": null, "key_strike": 290.0, "key_strike_net": 609426189.0504, "max_pain": null, "put_wall": 290.0, "put_wall_unconstrained": false, "put_wall_value": 720542331.6019, "spot": 295.82 }, "max_gex_strike": 290, "normalized_gex": -7440286.7267, "put_gex": -4299167102.8144, "stock_price": 295.82, "ticker": "IWM", "total_gex": -2200985619.4867, "total_gex_billions": -2.201 }, "QQQ": { "call_gex": 7556293659.4015, "expirations_horizon_days": 90, "expirations_included": 16, "expirations_through": "2026-11-20", "expirations_total": 31, "flip_degenerate": false, "flip_level": null, "gamma_flip": null, "gex_ratio": 0.9969, "implications": { "directional_bias": "Balanced (call/put GEX 1.00)", "net_to_gross": -0.0015, "pin_at_spot": false, "positioning": "largest strike $700.00 (-2.6%); call wall $730.00 (+1.5%); put wall $700.00 (-2.6%)", "regime_code": "balanced", "support_resistance": "--", "volatility_regime": "Balanced GEX (net 0.2% of gross, no dominant side)" }, "key_levels": { "call_wall": 730.0, "call_wall_unconstrained": false, "call_wall_value": 666241251.0777, "flip_degenerate": false, "flip_level": null, "key_strike": 700.0, "key_strike_net": 670370841.253, "max_pain": null, "put_wall": 700.0, "put_wall_unconstrained": false, "put_wall_value": 936624637.4421, "spot": 718.88 }, "max_gex_strike": 700, "normalized_gex": -32228.4822, "put_gex": -7579462070.714, "stock_price": 718.88, "ticker": "QQQ", "total_gex": -23168411.3125, "total_gex_billions": -0.0232 }, "SPY": { "call_gex": 12388200841.1688, "expirations_horizon_days": 90, "expirations_included": 16, "expirations_through": "2026-11-20", "expirations_total": 32, "flip_degenerate": false, "flip_level": null, "gamma_flip": null, "gex_ratio": 0.7932, "implications": { "directional_bias": "Balanced (call/put GEX 0.79)", "net_to_gross": -0.1153, "pin_at_spot": false, "positioning": "largest strike $760.00 (-1.3%); call wall $775.00 (+0.6%); put wall $760.00 (-1.3%)", "regime_code": "negative", "support_resistance": "--", "volatility_regime": "Negative GEX (dealers amplify moves)" }, "key_levels": { "call_wall": 775.0, "call_wall_unconstrained": false, "call_wall_value": 969364047.7614, "flip_degenerate": false, "flip_level": null, "key_strike": 760.0, "key_strike_net": 1376738203.7852, "max_pain": null, "put_wall": 760.0, "put_wall_unconstrained": false, "put_wall_value": 1809628588.0631, "spot": 770.25 }, "max_gex_strike": 760, "normalized_gex": -4194083.4797, "put_gex": -15618693641.3721, "stock_price": 770.25, "ticker": "SPY", "total_gex": -3230492800.2033, "total_gex_billions": -3.2305 } } } } ``` ## Fields - `comparison..total_gex, normalized_gex, flip_level, stock_price`: The side-by-side table. - `indices.`: The full /gex payload per index. ## Errors - `401`: no or revoked token - `429`: Retry-After seconds - `403`: Premium plan required - `424`: data feed unavailable, retry - Full list: https://apexvol.com/developers/errors ## Ask it in an MCP client - Compare dealer gamma across SPY, QQQ and IWM. - Which index is in the deepest negative gamma? - Give me a cross-index gamma summary for the open. Conventions for units, bases and timestamps: https://apexvol.com/developers/conventions