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YFIN API Now Returns Plain CSV on Most Endpoints. Add format=csv to the Same URL.
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YFIN API Now Returns Plain CSV on Most Endpoints. Add format=csv to the Same URL.

Published: September 11, 2026

Related toolsQRep - Security Reports•Quants Agent•DUCKIT - CSV to DuckDB

YFIN API, my free Yahoo Finance API, now returns a plain CSV on most endpoints. Add format=csv to the same URL and get a normal table back, no JSON to unwrap.

Multiple tickers. Every endpoint takes a comma-separated list of symbols, up to 25 in a single call, so a whole watchlist comes back in one request. Most used endpoints are prices, profile, financials and analyst price targets.

Docs: tigzig.com/apis/yahoo-finance

If you would rather talk to an agent and have it pull the data for you, the data pull agent is sitting here: quants.tigzig.com

And no, the data pull agent is not allowed to analyze the data and give a recommendation. It can just pull the data and generate it for you. However, it also generates an AI technical analysis report, with the technical analysis piece done by a different AI pathway. And yes, it can pull mutual fund NAVs also, for India only.

YFIN, the free Yahoo Finance market data API: CSV on most endpoints, plus the full endpoint list

Working on something similar? How I work covers the rates, the availability and what I take on.