Service metadata

Code snippets

curl "https://api.oanor.com/betadispersion-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/betadispersion-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/betadispersion-api/v1/meta");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/betadispersion-api/v1/meta",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "benchmark is any universe symbol (default SPY). window is 60-756 trading days (default 252). class filters to equity/sector/commodity/bond/crypto (default all). Beta is cov(asset,benchmark)/var(benchmark) on daily returns. Read fresh per call, nothing cached.",
        "source": "Yahoo Finance daily closes, live",
        "classes": [
            "equity",
            "sector",
            "commodity",
            "bond",
            "crypto"
        ],
        "service": "betadispersion-api",
        "universe": [
            "SPY",
            "QQQ",
            "IWM",
            "EFA",
            "EEM",
            "XLK",
            "XLF",
            "XLE",
            "XLV",
            "XLI",
            "XLU",
            "XLP",
            "XLRE",
            "GLD",
            "SLV",
            "USO",
            "DBC",
            "TLT",
            "HYG",
            "BTC-USD",
            "ETH-USD"
        ],
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/asset": "Beta profile of one instrument vs the benchmark (symbol=XLK, benchmark=SPY, window=252).",
            "GET /v1/screener": "Rank the universe by beta to a benchmark (benchmark=SPY, window=252, class=all).",
            "GET /v1/dispersion": "Beta dispersion across the universe with a risk-appetite read (benchmark=SPY, window=252)."
        },
        "description": "Beta screener / beta dispersion — ranks a cross-asset universe by beta to a benchmark (default S&P 500), live from Yahoo Finance daily closes (no key, nothing stored). screener ranks the universe (filterable by class) by beta, each with correlation and R-squared; asset returns one instrument's beta profile; dispersion returns the spread of betas across the universe (high-minus-low, mean beta, risk-on share) as a risk-appetite read. The systematic-risk / market-sensitivity ranking cut — distinct from the BYO CAPM/beta calculator, the total-risk Sharpe/Sortino screener, the correlation matrix and the price APIs.",
        "universe_size": 21,
        "upstream_status": "ok",
        "highest_beta_vs_spy": "ETH-USD"
    },
    "meta": {
        "timestamp": "2026-06-12T10:34:54.773Z",
        "request_id": "63ce27f6-8fb5-4d63-9b96-3ab53e233db0"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}