Is there a Yahoo Finance API?
Not a public one. Yahoo's developer site lists two APIs today, Fantasy Sports and Sign In With Yahoo, and nothing for market or company data. Yahoo's terms of service, last updated on 1 November 2026, say users must not access or collect data from its services by automated means, including scrapers and data mining tools, without Yahoo's express prior permission, and must not reach the services by any method other than the interface Yahoo provides.
On the website itself, historical prices, dividends and splits can be viewed for most quotes, and downloading them as a CSV file comes with a Yahoo Finance Gold subscription. The code libraries that read Yahoo's pages are written by other people, outside those terms, and can stop working whenever Yahoo changes its pages.
Is there a Google Finance API?
No. Google publishes no finance data API for developers. The official route is GOOGLEFINANCE, a function that works inside Google Sheets: =GOOGLEFINANCE("NASDAQ:NVDA", "price") fills a cell with Nvidia's price. Its other figures include the day's open, high, low and volume, market cap, P/E, EPS, the 52-week high and low, beta and shares outstanding, and it returns daily open, close, high, low and volume for past dates.
Google's help page sets the limits. Quotes may be delayed up to 20 minutes and are provided as is, for information only. The data is not for use by financial industry professionals. Historical data cannot be downloaded or read through the Sheets API or Apps Script; a program that tries gets #N/A. And nothing in GOOGLEFINANCE covers an income statement, a balance sheet or a cash flow.
Where the financial statements come from
Every US-listed company files its statements with the SEC in each 10-K and 10-Q. SN Data reads those filings and returns the income statement, balance sheet and cash flow in the same standard lines for every company, with the lines as each company reported them beside them, by fiscal year from 2007 or by quarter from 2008. Each period carries the address of the filing it came from.
In Google Sheets the SN Data add-on works like GOOGLEFINANCE: =SN("NVDA", "revenue", 2026) fills a cell with Nvidia's revenue for fiscal 2026. From code, one call returns a whole statement.
curl "https://shikshannivesh.com/api/v1/companies/NVDA/financials\ ?basis=standard&period=quarterly" \ -H "Authorization: Bearer sn_live_your_key"
Prices and statements in one sheet
The two sources sit side by side in Google Sheets. GOOGLEFINANCE fills the price column, delayed as Google describes, and =SN() fills the reported figures beside it: revenue, net income, free cash flow, margins and returns, by year, by quarter or for the last twelve months. A sheet of 50 companies uses 50 SN Data calls, kept for 6 hours however many cells use them.
What the free key covers
A free SN Data account's key answers 250 calls a day, at most 60 a minute, on the last 5 fiscal years of every covered company: statements, 145 ratios, segments, 8-K events, insider trades, planned sales, large holders, fund holders, House trades and short interest. The Individual plan, $19 a month, opens every year back to fiscal 2007 at up to 300 calls a minute.
So for prices, the working official route today is GOOGLEFINANCE in Google Sheets, with its 20-minute delay and its limits. For the statements behind a company, the SEC filings are the source, and SN Data returns them through a documented API with a free key.