Screeners API, GET /screen
Which stocks have the highest IV rank right now?
Preset screens over the whole universe: high IV rank, high VRP, earnings this week, skew, contango and more. Runs one of the preset screens over the covered universe in one or two bulk calls and returns the matching rows with price, IV, realized vol, VRP, skew percentile, earnings timing and market cap. screen_type=list returns the catalog.
The answer, in one call
Units first,
then the request.
iv30d, iv60d, hv20d in percentage points; vrp in points; chg_1w and chg_1m in percent; market_cap in dollars.
Daily bulk data from the feed; iv_percentile is the one-year figure.
curl -H "Authorization: Bearer avmcp_YOUR_TOKEN" \
"https://apexvol.com/api/mcp/data/screen?screen_type=high_iv_rank&limit=5"import requests
headers = {"Authorization": "Bearer avmcp_YOUR_TOKEN"}
params = {"screen_type": "high_iv_rank", "limit": "5"}
r = requests.get("https://apexvol.com/api/mcp/data/screen", headers=headers, params=params)
r.raise_for_status()
data = r.json()["data"]
print(data["screen_name"])Screen for the highest IV rank stocks over 5 billion market cap.
The assistant calls screen_market and answers from the JSON below.{
"success": true,
"data": {
"results": [
{
"asset_type": "Stock",
"avg_opt_volume": 181.0,
"beta": 0.64,
"chg_1m": 11.05,
"chg_1w": 14.47,
"contango": -30.8,
"days_to_earnings": 57,
"hv20d": 34.5,
"imp_earn_move": 16.18,
"iv30d": 243.0,
"iv60d": 177.2,
"iv_percentile": 100,
"market_cap": "$1.7B",
"market_cap_raw": 1703777000.0,
"next_earnings": "2026-11-04",
"price": 24.86,
"sector": "Healthcare",
"skew_pctile": 78.0,
"stock_volume": 44616,
"ticker": "TYRA",
"vrp": null
},
{
"asset_type": "Stock",
"avg_opt_volume": 76.0,
"beta": 1.34,
"chg_1m": 7.87,
"chg_1w": -6.13,
"contango": 5.76,
"days_to_earnings": 58,
"hv20d": 36.3,
"imp_earn_move": 15.12,
"iv30d": 113.4,
"iv60d": 115.7,
"iv_percentile": 100,
"market_cap": "$2.2B",
"market_cap_raw": 2196446000.0,
"next_earnings": "2026-11-05",
"price": 47.65,
"sector": "Healthcare",
"skew_pctile": 46.0,
"stock_volume": 6826,
"ticker": "RAPP",
"vrp": 77.1
},
{
"asset_type": "ETF",
"avg_opt_volume": 14.0,
"beta": 0.61,
"chg_1m": 7.91,
"chg_1w": 1.71,
"contango": -1.08,
"days_to_earnings": null,
"hv20d": 13.7,
"imp_earn_move": 0.0,
"iv30d": 25.0,
"iv60d": 25.0,
"iv_percentile": 100,
"market_cap": "$5.2B",
"market_cap_raw": 5212689000.0,
"next_earnings": null,
"price": 79.29,
"sector": "Materials",
"skew_pctile": 57.0,
"stock_volume": 7381,
"ticker": "GNR",
"vrp": 11.4
}
],
"scan_time": "2026-09-08T07:50:11",
"screen_description": "Tickers with elevated IV: selling premium opportunities",
"screen_name": "High IV Rank",
"screen_type": "high_iv_rank",
"total_results": 298,
"total_scanned": 5963,
"universe_size": 2318
}
}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 |
|---|---|---|---|---|
screen_type | query | high_iv_rank | high_iv_rank, low_iv_rank, high_vrp, earnings_this_week, high_skew, steep_contango, mean_reversion, vol_pairs, decorrelation, unusual_volume, pin_risk, list | Which preset. |
limit | query | 20 | 1 to 200 | Rows. |
min_market_cap | query | 1000000000 | dollars | Floor on size. |
exclude_earnings_days | query | 0 | 0 to 60 | Drop names reporting within N days. |
Field by field
What each
number means.
results[].ticker, price, iv30d, hv20d, vrp, iv_percentile- The row.
results[].skew_pctile, contango, days_to_earnings, imp_earn_move- Extra columns per screen.
screen_name, screen_description, total_scanned, universe_size- What ran.
Access, limits, errors
Before the
first call.
- Plan
- Premium Premium 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;403Premium 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 screen_market by name. One URL, a sign-in, no token to paste.
Screen for the highest IV rank stocks over 5 billion market cap.
YouWhich names have the richest premium over realized this week?
YouList the available screens.
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.