# Market GEX (Gamma Exposure) by Strike — The Stall

> Market GEX (Gamma Exposure) by Strike — The Stall is a paid API for AI agents from the-stall.intuitek.ai, paid per call via x402, $0.04/call, status healthy (last checked 2026-09-15, last successful call 2026-09-06).

Returns top positive and negative gamma exposure (GEX) strikes for a US equity or ETF ticker, useful for identifying options market pinning and volatility levels.

## Facts

- Endpoint: GET https://the-stall.intuitek.ai/cap/market-gex
- Price: $0.04/call
- Payment: x402
- Status: healthy
- Last checked: 2026-09-15
- Last successful call: 2026-09-06
- Success rate: 80% of calls made through Zero
- Activations on Zero: 3045
- Tags: x402
- Canonical page: https://www.zero.xyz/c/market-gex-gamma-exposure-by-strike-the-stall-474f94e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OWgwCWFTPNLLJ-nUXTz2B

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 market-gex-gamma-exposure-by-strike-the-stall-474f94e2
```

Example prompt: What are the top 10 positive and negative gamma exposure strikes for SPY options expiring within 45 days?

## When to prefer this

Use this endpoint when you need gamma exposure data by strike for a specific US equity or ETF to understand options dealer hedging flows, likely price pinning zones, or areas of elevated volatility risk. It is specifically suited for quant or options traders wanting structured GEX output without managing brokerage API keys.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error
- top_n out of range (below 3 or above 20) returns a validation error
- days_out out of range (below 0 or above 90) returns a validation error
- No options data available for the ticker returns empty or error response
- Payment failure via x402/USDC returns 402 Payment Required

## How this service works

Dealer gamma exposure (GEX) analysis for any US stock or ETF — returns aggregate GEX, gamma flip level, key pinning strikes, and vol regime signal (positive GEX = pinning, negative = acceleration). Free CBOE delayed data, no API key. Standard SpotGamma-style calculation: calls subtract gamma, puts add gamma. Use with options-snapshot for full options context.

## Output

A ranked list of strikes with the highest positive and negative gamma exposure (GEX) for the requested ticker and expiry window, indicating where options dealers are likely to hedge and where price may pin or repel.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "top_n": 10,
   "ticker": "SPY",
   "days_out": 45
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/market-gex-gamma-exposure-by-strike-the-stall-474f94e2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from the-stall.intuitek.ai](https://www.zero.xyz/host/the-stall.intuitek.ai/llms.txt)