# GEXLOG SPX Options GEX Range Briefing

> GEXLOG SPX Options GEX Range Briefing is a paid API for AI agents from agent.gexlog.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-10).

Returns a date-range series of SPX options gamma exposure (GEX) market briefings, including key price levels, gamma regime, trade signals, and AI-generated narratives.

## Facts

- Endpoint: GET https://agent.gexlog.com/agent/range?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gexlog-spx-options-gex-range-briefing-73a71051
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_riu5aKhk0rqD_f_6CaBqr

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability gexlog-spx-options-gex-range-briefing-73a71051
```

Example prompt: Pull me the GEXLOG SPX gamma briefings from 2025-01-13 to 2025-01-17, up to 5 days — I want to see the GEX flip levels, trade signals, and the AI market narratives for each day.

## When to prefer this

Choose this endpoint when you need multi-day historical SPX gamma exposure briefings with AI-generated narratives and structured trade signals. It is ideal for reviewing how gamma regimes, GEX flip levels, and call/put walls evolved over a date range. Prefer this over a single-day endpoint when backtesting signals, doing weekly reviews, or building multi-day context for an SPX options trading decision.

## Known failure modes

- Missing required 'start' or 'end' parameters returns a validation error
- Date range with no available data (e.g. future dates or very old dates) may return an empty data array
- Payment failure (x402): agent must pay $0.05 USDC per call or receive a 402 Payment Required response
- 'limit' exceeded or malformed date strings (not YYYY-MM-DD) cause request rejection
- Service unavailability during off-hours if data generation has not completed for the requested range

## How this service works

Multi-day SPX options market dataset. Returns an array of daily briefings for a date range (max 30 days).

## Output

An array of daily SPX options market briefings, each containing: key gamma price levels (current SPX price, GEX flip, put wall, call wall, max gamma), a snapshot of live market data (SPX, ES, NQ, VIX), gamma regime classification and total GEX from the forecast, a primary trade signal (GO/CAUTION/WAIT) with confidence score, and two AI-generated market narratives (one from Claude, one from Gemini), along with the generation timestamp. The response also includes the total count of days returned and the start/end dates of the range.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "end",
  "start"
 ],
 "properties": {
  "end": {
   "type": "string",
   "description": "Range end date (YYYY-MM-DD)"
  },
  "limit": {
   "type": "integer",
   "description": "Maximum number of days to return"
  },
  "start": {
   "type": "string",
   "description": "Range start date (YYYY-MM-DD)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "end": {
   "type": "string",
   "format": "date"
  },
  "data": {
   "type": "array",
   "items": {
    "type": "object",
    "properties": {
     "levels": {
      "type": "object",
      "properties": {
       "current": {
        "type": "number",
        "description": "SPX spot price at generation"
       },
       "gex_flip": {
        "type": [
         "number",
         "null"
        ],
        "description": "GEX flip level, null if no zero crossing in observable chain"
       },
       "put_wall": {
        "type": "number"
       },
       "call_wall": {
        "type": "number"
       },
       "max_gamma": {
        "type": "number"
       }
      },
      "description": "Key price levels from options positioning"
     },
     "market": {
      "type": "object",
      "properties": {
       "es": {
        "type": "number"
       },
       "nq": {
        "type": "number"
       },
       "spx": {
        "type": "number"
       },
       "vix": {
        "type": "number"
       }
      },
      "description": "Current market data snapshot"
     },
     "forecast": {
      "type": "object",
      "properties": {
       "factors": {
        "type": "object",
        "properties": {
         "gamma": {
          "type": "object",
          "properties": {
           "regime": {
            "type": "string",
            "description": "Gamma regime classification"
           },
           "total_gex": {
            "type": "number"
           }
          }
         }
        }
       }
      },
      "description": "Market forecast including gamma regime and expected move"
     },
     "guidance": {
      "type": "object",
      "properties": {
       "signal": {
        "enum": [
         "GO",
         "CAUTION",
         "WAIT"
        ],
        "type": "string",
        "description": "Primary trade signal"
       },
       "confidence": {
        "type": "number"
       }
      },
      "description": "Trade guidance signals"
     },
     "generated_at": {
      "type": "string",
      "format": "date-time",
      "description": "When this briefing was generated"
     },
     "ai_narrative_primary": {
      "type": "string",
      "description": "AI-generated market narrative (Claude)"
     },
     "ai_narrative_secondary": {
      "type": "string",
      "description": "AI-generated market narrative (Gemini)"
     }
    },
    "description": "Full SPX options market briefing with gamma regime, lev
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gexlog-spx-options-gex-range-briefing-73a71051/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent.gexlog.com](https://www.zero.xyz/host/agent.gexlog.com/llms.txt)