- API
- Gamma exposure
- Volume profile
Gamma exposure API, GET /volume-profile/{ticker}
Which SPY strikes are trading the most volume and holding the most open interest?
Call and put volume and open interest by strike, with the ratios. Returns the per-strike profile of call and put volume and open interest, the top strikes by each, and the aggregate put-call ratio.
The answer, in one call
Units first,
then the request.
Contracts; ratios are unitless; distance_from_spot_pct in percent.
Today's cumulative volume and current open interest from the data feed.
curl -H "Authorization: Bearer avmcp_YOUR_TOKEN" \
"https://apexvol.com/api/mcp/data/volume-profile/SPY"import requests
headers = {"Authorization": "Bearer avmcp_YOUR_TOKEN"}
r = requests.get("https://apexvol.com/api/mcp/data/volume-profile/SPY", headers=headers)
r.raise_for_status()
data = r.json()["data"]
print(data["put_call_ratio"])Which SPY strikes have the most volume today?
The assistant calls get_volume_profile and answers from the JSON below.{
"success": true,
"data": {
"expiration": "2026-09-08",
"put_call_ratio": 1.483,
"stock_price": 770.25,
"success": true,
"ticker": "SPY",
"timestamp": "2026-09-08T08:07:22.009730",
"top_oi_strikes": [
{
"call_oi": 12.0,
"call_volume": 528.0,
"distance_from_spot_pct": -4.3168,
"moneyness": "ITM",
"pcr_oi": 454.5833,
"pcr_volume": 4.6723,
"put_oi": 5455.0,
"put_volume": 2467.0,
"strike": 737.0,
"total_oi": 5467.0,
"total_volume": 2995.0
},
{
"call_oi": 6179.0,
"call_volume": 82391.0,
"distance_from_spot_pct": -0.0325,
"moneyness": "ATM",
"pcr_oi": 0.5446,
"pcr_volume": 1.0061,
"put_oi": 3365.0,
"put_volume": 82894.0,
"strike": 770.0,
"total_oi": 9544.0,
"total_volume": 165285.0
},
{
"call_oi": 4680.0,
"call_volume": 13232.0,
"distance_from_spot_pct": 1.2658,
"moneyness": "ATM",
"pcr_oi": 0.04,
"pcr_volume": 0.1359,
"put_oi": 187.0,
"put_volume": 1798.0,
"strike": 780.0,
"total_oi": 4867.0,
"total_volume": 15030.0
}
],
"top_volume_strikes": [
{
"call_oi": 1200.0,
"call_volume": 25628.0,
"distance_from_spot_pct": -0.1623,
"moneyness": "ATM",
"pcr_oi": 0.9767,
"pcr_volume": 2.2318,
"put_oi": 1172.0,
"put_volume": 57197.0,
"strike": 769.0,
"total_oi": 2372.0,
"total_volume": 82825.0
},
{
"call_oi": 6179.0,
"call_volume": 82391.0,
"distance_from_spot_pct": -0.0325,
"moneyness": "ATM",
"pcr_oi": 0.5446,
"pcr_volume": 1.0061,
"put_oi": 3365.0,
"put_volume": 82894.0,
"strike": 770.0,
"total_oi": 9544.0,
"total_volume": 165285.0
},
{
"call_oi": 1450.0,
"call_volume": 61672.0,
"distance_from_spot_pct": 0.0974,
"moneyness": "ATM",
"pcr_oi": 2.0738,
"pcr_volume": 0.7047,
"put_oi": 3007.0,
"put_volume": 43463.0,
"strike": 771.0,
"total_oi": 4457.0,
"total_volume": 105135.0
}
],
"total_call_volume": 424808.0,
"total_put_volume": 629987.0,
"volume_profile": [
{
"call_oi": 1200.0,
"call_volume": 25628.0,
"distance_from_spot_pct": -0.1623,
"moneyness": "ATM",
"pcr_oi": 0.9767,
"pcr_volume": 2.2318,
"put_oi": 1172.0,
"put_volume": 57197.0,
"strike": 769.0,
"total_oi": 2372.0,
"total_volume": 82825.0
},
{
"call_oi": 6179.0,
"call_volume": 82391.0,
"distance_from_spot_pct": -0.0325,
"moneyness": "ATM",
"pcr_oi": 0.5446,
"pcr_volume": 1.0061,
"put_oi": 3365.0,
"put_volume": 82894.0,
"strike": 770.0,
"total_oi": 9544.0,
"total_volume": 165285.0
},
{
"call_oi": 1450.0,
"call_volume": 61672.0,
"distance_from_spot_pct": 0.0974,
"moneyness": "ATM",
"pcr_oi": 2.0738,
"pcr_volume": 0.7047,
"put_oi": 3007.0,
"put_volume": 43463.0,
"strike": 771.0,
"total_oi": 4457.0,
"total_volume": 105135.0
}
]
}
}Every response is wrapped as {"success": true, "data": {...}}. Lists in the sample are cut to a few rows so it fits on a page; the shape is exactly what your code receives.
Parameters
Bounded,
and the bounds are stated.
Out-of-range numbers are clamped to the documented range, never silently changed to something else. A missing required field returns 400 with the reason.
| Name | In | Default | Range | Meaning |
|---|---|---|---|---|
ticker required | path | any covered symbol | The underlying, upper case. Use /search to check coverage. | |
expiration | query | nearest | YYYY-MM-DD, a listed expiration | Which expiration to use. Defaults to the nearest one. |
Field by field
What each
number means.
volume_profile[].strike, call_volume, put_volume, call_oi, put_oi- The profile.
top_volume_strikes[], top_oi_strikes[]- The leaders.
put_call_ratio, total_call_volume, total_put_volume- The aggregates.
Access, limits, errors
Before the
first call.
- Plan
- Basic Basic and above. Tokens are issued to paid and trial accounts from $55 a month; each endpoint follows the tier of its web feature. An endpoint above your plan answers 402 and names the plan it needs.
- Auth
- Bearer token, prefix
avmcp_, created under Account, then API Access. Shown once, hashed at rest, rotates in one click. Always callhttps://apexvol.com, never www. - Limits
- 60 requests a minute and 1,000 an hour per token, plus a monthly allowance by plan. Every response carries the remaining counts in
X-RateLimit-*headers; a 429 carriesRetry-Afterin seconds. - Errors
401no or revoked token;429Retry-After seconds;424data feed unavailable, retry. The full list with payload shapes is on the errors page.- Since
- API 1.0. Units, bases and timestamps follow the conventions shared by every endpoint; changes are logged in the API changelog.
- Machine-readable
- This page as Markdown, the family as one file, the whole API as llms-full.txt or OpenAPI 3.1.
The same data, in plain English
Ask for it
in an MCP client.
Connect the ApexVol MCP server and the assistant calls get_volume_profile by name. One URL, a sign-in, no token to paste.
Which SPY strikes have the most volume today?
YouWhere is open interest concentrated on NVDA for October?
YouWhat is the put-call ratio on AAPL by volume?
More in the prompt library. Set the server up in Claude Desktop, Claude Code, Cursor, ChatGPT, VS Code, Windsurf or Gemini CLI.
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