Global Equity Valuations Database - Free API

Free, no-key, public HTTP API of key valuation ratios & multiples for the most followed U.S. and global stock indices, including sector-based indices.

For country and regional indices, historical trailing P/E, forward P/E, CAPE ratio, and dividend yield are available. For U.S. sector indices, trailing P/E, CAPE ratio, P/B, dividend yield, and EV/EBITDA is available. Global sector indices will be added to the database in Q3 2026.

To examine how the ratios is calculated, read the full data methodology document (PDF).

This is the free promotional tier of the Siblis Research Global Equity Valuations Database. The full API delivers daily data for ~70 indices across decades of history, plus statistics endpoints and bulk CSV downloads. Get your API key →

Note: The API provides valuation metrics at the stock index level only and does not include data for individual companies.

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What you get for free

• A subset of the most important global equity indices, including sector indices (see /v1/indices)
• Historical month-end snapshots (see /v1/dates)
• No signup, no API key, just curl / fetch / requests

What you don't get

• Daily data — the free tier is month-end only
• Most recent data — only specific historical month-ends are exposed
• The full ticker universe (~70 indices)
• The /stats and bulk-download endpoints

For full access, get your API key.

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Base URL

https://siblisresearch.supabase.co/functions/v1/free-data-api

All endpoints in this README append to that base.

Endpoints

List the free-tier tickers

GET /v1/indices

The ticker symbols returned here are the ones you use when calling the per-ticker endpoint below. They may differ from the symbols used by the commercial Siblis API — always call /v1/indices first to discover the exact symbols the free tier accepts.

{
  "indices": [
    { "ticker": "DAX",        "index_name": "DAX Index (Germany)",                "currency": "Local", "frequency": "daily" },
    { "ticker": "NDX",        "index_name": "NASDAQ 100 Index",             "currency": "USD", "frequency": "daily" },
    { "ticker": "WORLD", "index_name": "Developed World Index",  "currency": "USD", "frequency": "daily" }
  ],
  "_meta": { "tier": "free", "commercial_api": "https://siblisresearch.com" }
}

List the available dates

GET /v1/dates

{
  "dates": ["2025-12-31", "2025-09-30", "2025-06-30", "2024-12-31", "2024-06-30"]
}

Get a single ratio for a single ticker

GET /v1/<TICKER>/<ratio>

Where <ratio> is one of: pe-trailing, pe-forward, cape, pb, dividend-yield, ev-ebitda.

GET /v1/US-ENER/cape

{
  "ticker":     "US-ENER",
  "index_name": "U.S. Large Cap Energy Index",
  "currency":   "USD",
  "frequency":  "daily",
  "ratio":      "cape",
  "data": [
    { "trading_day (EOD)": "2024-06-30", "value": 28.72 },
    { "trading_day (EOD)": "2024-12-31", "value": 27.05 },
    { "trading_day (EOD)": "2025-06-30", "value": 26.67 },
    { "trading_day (EOD)": "2025-09-30", "value": 27.34 },
    { "trading_day (EOD)": "2025-12-31", "value": 26.36 }
  ]
}

There are no query parameters. Every call returns every available month-end for that ticker.

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Rate limit

500 requests per IP per UTC day. Above that you get HTTP 429:

{
  "error":    "rate_limit_exceeded",
  "message":  "Free tier is capped at 500 requests per day per IP. For higher limits, see https://siblisresearch.com.",
  "reset_at": "2026-05-25T00:00:00.000Z"
}

Most realistic clients will never hit this because responses are cached for an hour at the browser and a day at the CDN.

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Examples

curl

curl -s "$BASE/v1/SSE/cape"             # CAPE for SSE Composite Index (Mainland China)
curl -s "$BASE/v1/WORLD/pe-forward"  # forward P/E for Developed World Index

Python

import requests

BASE = "https://siblisresearch.supabase.co/functions/v1/free-data-api"

def fetch(ticker: str, ratio: str) -> list[dict]:
    r = requests.get(f"{BASE}/v1/{ticker}/{ratio}", timeout=30)
    r.raise_for_status()
    return r.json()["data"]

for point in fetch("N225", "cape"):
    print(point["trading_day (EOD)"], point["value"])

JavaScript / TypeScript (browser or Node)

const BASE = "https://siblisresearch.supabase.co/functions/v1/free-data-api";

async function fetchRatio(ticker: string, ratio: string) {
  const r = await fetch(`${BASE}/v1/${ticker}/${ratio}`);
  if (!r.ok) throw new Error(`HTTP ${r.status}`);
  const json = await r.json();
  return json.data as Array<{ "trading_day (EOD)": string; value: number }>;
}

const cape = await fetchRatio("N225", "cape");
console.table(cape);

Google Sheets

=IMPORTDATA("https://siblisresearch.supabase.co/functions/v1/free-data-api/v1/N225/cape")

(IMPORTDATA returns JSON as a single string. For a parsed table, use Apps Script or an add-on. The same call works directly inside Excel's Power Query → "From Web".)

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Stability and changes

The free tier's exposed tickers, dates, and naming are configured server-side and may change over time. The URL structure and response shape are stable and versioned (/v1/). When breaking changes are needed, a /v2/ route will be added in parallel before /v1/ is retired.

If you build something on top of this and need notification of changes, please open an issue on this repo.

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License

The code samples in this repository are MIT-licensed. The data returned by the API is © Siblis Research, Ltd. and is provided for non-commercial use. While every effort is made to ensure data accuracy, Siblis Research accepts no liability for any inaccuracies in the data. For commercial use, see siblisresearch.com.