Cores API endpoint, Stock analytics

The answer, in one call

Units first,
then the request.

Vendor units: IVs and HVs in percentage points, price changes in percentage points, borrow in percent, market cap in dollars. The row contains a numeric field named error, a model-fit statistic, not a failure.

Vendor field names are returned as-is (iv30d, clsHv20d, ivPctile1y, slope, contango and so on).

curlBearer token from Account, then API Access

curl -H "Authorization: Bearer avmcp_YOUR_TOKEN" \
     "https://apexvol.com/api/mcp/data/cores/NVDA"

Pythonrequests, nothing else

import requests

headers = {"Authorization": "Bearer avmcp_YOUR_TOKEN"}
r = requests.get("https://apexvol.com/api/mcp/data/cores/NVDA", headers=headers)
r.raise_for_status()
data = r.json()["data"]
print(data["iv30d"])

In Claude, Cursor or ChatGPTthrough the MCP server, no code

You

Pull the cores row for NVDA.

The assistant calls get_orats_cores and answers from the JSON below.

ticker *any covered symbol

fieldsCSV of field names, or all

Tokens come with every paid or trial plan. Sign in and create one under Account, then API Access, or start a trial. Your ticker, your budget.

GET /api/mcp/data/cores/NVDA200, application/json, captured 2026-09-08

{
  "success": true,
  "data": {
    "absAvgErnMv": 5.561,
    "assetType": 3,
    "atmIvM1": 32.01,
    "atmIvM2": 33.46,
    "atmIvM3": 37.99,
    "atmIvM4": 37.7,
    "available_field_count": 340,
    "avgOptVolu20d": 3290792.75,
    "beta1m": 3.08,
    "beta1y": 1.93,
    "borrow2yr": 3.32,
    "borrow30": 3.42,
    "cOi": 8454385,
    "cVolu": 3549509,
    "clsHv20d": 44.92,
    "clsHvXern20d": 33.94,
    "contango": 1.26,
    "correlSpy1m": 0.49,
    "correlSpy1y": 0.41,
    "daysToNextErn": 0,
    "divYield": 0.4,
    "dlt25Iv30d": 32.6,
    "dlt75Iv30d": 34.55,
    "dtExM1": 15,
    "dtExM2": 43,
    "dtExM3": 78,
    "dtExM4": 106,
    "ernMvStdv": 4.4168,
    "exErnIv30d": 33.05,
    "impErnMv": 7.82,
    "impliedEarningsMove": 6,
    "iv30d": 33.05,
    "iv60d": 35.83,
    "ivHvXernRatio": 1.03,
    "ivHvXernRatio1y": 0.9,
    "ivHvXernRatioStdv1y": 6.49,
    "ivPctile1y": 12,
    "ivSpyRatio": 2.7984,
    "ivSpyRatioAvg1y": 2.37,
    "mktCap": 5561054100,
    "nextErn": "0000-00-00",
    "orHv20d": 37.86,
    "pOi": 7571013,
    "pVolu": 1906366,
    "pxCls": 228.45,
    "sectorName": "Technology",
    "slope": 1.2147,
    "slopeavg1y": 2.1043,
    "slopepctile": 25.79,
    "stkPxChng1m": 5.05,
    "stkPxChng1wk": 5.86,
    "stkVolu": 6443150,
    "ticker": "NVDA",
    "tkOver": 0,
    "tradeDate": "2026-09-04"
  }
}

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.
`fields`	query	curated subset	CSV of field names, or all	Which fields to return.

Field by field

What each
number means.

iv30d, iv60d, ivPctile1y, exErnIv30d: IV summaries.
clsHv20d, orHv20d, ivHvXernRatio: Realized vol and the ratio.
slope, contango, dlt25Iv30d, dlt75Iv30d: Skew and term.
impErnMv, absAvgErnMv, nextErn, daysToNextErn: Earnings.
borrow30, beta1y, correlSpy1y, mktCap: The rest.

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 call https://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 carries Retry-After in seconds.
Errors: 401 no or revoked token; 429 Retry-After seconds; 403 Pro plan required; 424 data 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_orats_cores by name. One URL, a sign-in, no token to paste.

Prompts that hit this endpointcopy one into Claude, Cursor or ChatGPT

You

Pull the cores row for NVDA.

You

Give me iv30d, clsHv20d and slope for AAPL from cores.

You

What is exErnIv30d versus iv30d on TSLA?

More in the prompt library. Set the server up in Claude Desktop, Claude Code, Cursor, ChatGPT, VS Code, Windsurf or Gemini CLI.

Stock analytics APIWhere a stock sits in its range and how its vol compares with the move, whether it is hard to borrow, what it pays and when, how it tracks SPY and its sector, and the 340-field analytics row the platform screens on. Options Data API: Chains, IV Rank & GreeksA REST options data API with 59 endpoints: options chains, IV rank, volatility risk premium, Greeks, dealer GEX, and earnings analytics. get_orats_cores in an MCP clientPrompts for Claude, Cursor and ChatGPT that call this tool.

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.

Start free trial Create a free account

Real market data, not a sandbox. See it live on AAPL.

What is in the raw analytics row the platform screens NVDA on?

Units first,then the request.

Bounded,and the bounds are stated.

What eachnumber means.

Before thefirst call.

Ask for itin an MCP client.

The rest of the family,and the explainer behind it.

Included withevery paid plan.