- API
- Options chain
- Options by delta
Options chain API, GET /options-by-delta/{ticker}
Which NVDA call is closest to 30 delta, and what does it cost?
The contract nearest a target delta with its strike, IV and quote. Returns the single call or put whose delta is closest to the target for the chosen expiration, with the actual delta, strike, bid, ask, mid and IV.
The answer, in one call
Units first,
then the request.
iv is a decimal (0.2569); iv_pct carries the same value in percentage points. Prices are dollars.
Delta from the chain row. delta is bounded to 0.01 to 0.99.
curl -H "Authorization: Bearer avmcp_YOUR_TOKEN" \
"https://apexvol.com/api/mcp/data/options-by-delta/NVDA?delta=0.30&option_type=call"import requests
headers = {"Authorization": "Bearer avmcp_YOUR_TOKEN"}
params = {"delta": "0.30", "option_type": "call"}
r = requests.get("https://apexvol.com/api/mcp/data/options-by-delta/NVDA", headers=headers, params=params)
r.raise_for_status()
data = r.json()["data"]
print(data["strike"])Which NVDA call is closest to 30 delta for the nearest expiration?
The assistant calls get_options_by_delta and answers from the JSON below.{
"success": true,
"data": {
"actual_delta": 0.2609,
"ask": 1.08,
"bid": 1.05,
"expiration": "2026-09-09",
"iv": 0.2569,
"iv_pct": 25.69,
"iv_units": "decimal",
"mid": 1.065,
"option_type": "call",
"stock_price": 230.3,
"strike": 235.0,
"target_delta": 0.3,
"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. | |
delta | query | 0.3 | 0.01 to 0.99 | Target absolute delta. |
option_type | query | call | call or put | Which side. |
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.
strike, actual_delta, target_delta- The contract chosen and how close it is.
bid, ask, mid- The quote.
iv, iv_pct, iv_units- Implied vol in both forms.
expiration, stock_price- Context for the pick.
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_options_by_delta by name. One URL, a sign-in, no token to paste.
Which NVDA call is closest to 30 delta for the nearest expiration?
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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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