Developers & Data

Fair-value data built from audited fundamentals, free to use with attribution (CC BY 4.0). Updated daily, across 35,000+ stocks. Below: the exports with their fields, copy-paste examples, and the routes for AI assistants and your own site.

Data exports (CSV & JSON)

Three ready-made, daily-fresh lists. Choose the format via the extension: .json or .csv. Optionally filter by sector with ?sector=technology.

Undervalued quality stocks (JSON) CSV Overvalued stocks (JSON) CSV Value traps (cheap but weak quality) (JSON) CSV

Fields

Field	Meaning
`ticker`	Exchange ticker symbol
`company`	Company name
`upside_pct`	Gap from price to our fair value in % (positive = undervalued)
`quality_score`	Quality score 0 to 100 (profitability, growth, balance sheet, moat)
`price_local`	Current price in the listing currency
`evidence`	Confidence tier: low, medium or high
`sector`	GICS sector
`country`	Listing country
`url`	Link to the stock page

Provenance: our fair value from multiple models on company-reported fundamentals (regulatory filings) plus third-party market data. Update frequency: daily. Every response carries snapshot_date, license and source.

Examples

curl

curl -s https://www.fairvalue-calculator.com/undervalued-stocks.json

Python (pandas)

import pandas as pd
df = pd.read_json("https://www.fairvalue-calculator.com/undervalued-stocks.json")
print(df["stocks"].apply(pd.Series)[["ticker","upside_pct","quality_score"]].head())

JavaScript

const r = await fetch("https://www.fairvalue-calculator.com/undervalued-stocks.json");
const { stocks } = await r.json();
console.table(stocks.slice(0, 10));

Google Sheets

=IMPORTDATA("https://www.fairvalue-calculator.com/undervalued-stocks.csv")

For AI assistants (MCP)

Connect Fair Value Calculator to ChatGPT, Claude, Perplexity and others via our MCP server. The assistant can then resolve a stock, fetch a preview and a fair-value verdict, and compare two stocks.

Set up integrations → Widgets for your site → Research datasets (CC BY) →

License & citation

Free to use under CC BY 4.0. Please attribute with a clickable link to the original source:

Source: Fair Value Calculator (fairvalue-calculator.com), accessed 2026-07-26.

For information and educational use, not financial advice. Rate limits protect the service; for higher frequency or a custom cut, write to [email protected].