- API
- Implied volatility
- Skew
Implied volatility API, GET /skew/{ticker}
How steep is NVDA's put skew today compared with its own history and its sector?
Put-call skew slope, curvature and the percentile of today's skew. Returns the current skew slope and its forecast, the smile curvature with an interpretation, where today's slope sits against its one-month and one-year averages, and the ratio to the sector ETF. Other views return the history or the curvature only.
The answer, in one call
Units first,
then the request.
slope and curvature are the data feed's surface parameters (unitless); percentile.current is 0 to 100; market_width.vol is in percentage points.
Slope is measured on the smoothed vol surface at the 30-day tenor. Read it against percentile.avg_1y rather than as an absolute.
curl -H "Authorization: Bearer avmcp_YOUR_TOKEN" \
"https://apexvol.com/api/mcp/data/skew/NVDA"import requests
headers = {"Authorization": "Bearer avmcp_YOUR_TOKEN"}
r = requests.get("https://apexvol.com/api/mcp/data/skew/NVDA", headers=headers)
r.raise_for_status()
data = r.json()["data"]
print(data)Is NVDA's put skew steep right now compared with the last year?
The assistant calls get_ticker_analytics and answers from the JSON below.{
"success": true,
"data": {
"current": {
"slope": 1.2147,
"slope_forecast": 1.0845,
"slope_forecast_inf": 1.0637,
"slope_inf": 0.9391
},
"curvature": {
"deriv": 0.0594,
"deriv_forecast": 0.0391,
"deriv_forecast_inf": 0.0532,
"deriv_inf": 0.058,
"interpretation": "smile",
"mispricing": 0.0203
},
"market_width": {
"vol": 0.58,
"vol_inf": 0.63
},
"percentile": {
"avg_1m": 0.9104,
"avg_1y": 2.1043,
"current": 25.79,
"stdv_1y": 1.29
},
"price": 230.3,
"sector": "Technology",
"sector_relative": {
"etf_slope_ratio": 0.4
},
"ticker": "NVDA"
}
}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. | |
view | query | analysis | analysis, history, curvature | Which block to return. |
days | query | 252 | 20 to 1000 | History length for view=history. |
Field by field
What each
number means.
current.slope, slope_forecast- Today's skew slope and the model forecast.
percentile.current, avg_1m, avg_1y, stdv_1y- Today's slope percentile and the averages it is compared with.
curvature.interpretation, mispricing- What the smile shape says.
sector_relative.etf_slope_ratio- Skew relative to the sector ETF.
Access, limits, errors
Before the
first call.
- Plan
- Pro Pro 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;403Pro plan required;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_ticker_analytics by name. One URL, a sign-in, no token to paste.
Is NVDA's put skew steep right now compared with the last year?
YouHow does AAPL's skew compare with its sector ETF?
YouShow me the skew history for SPY over 6 months.
More in the prompt library. Set the server up in Claude Desktop, Claude Code, Cursor, ChatGPT, VS Code, Windsurf or Gemini CLI.
Included with
every paid plan.
From $55 a month, tier-matched: your token queries the data your plan includes and Pro unlocks the full surface.
Real market data, not a sandbox. See it live on AAPL.