StockFit API – structured SEC EDGAR data with a free tier

What it does

Access company financials, ownership, ETF/MF exposure, insider trades, filings, and much more! All structured directly from SEC XBRL. 250+ million facts, 5+ million filings. No adjusted metrics and everything fully traceable. Everything is updated daily. Free tier, no credit card. REST API + MCP server for using it in your favorite AI Tools. StockFit API is built for investors, quant developers, and research platforms that want to go straight to the facts without draining their pockets.

Auditable financial data updated daily. Modern infrastructure for today's Investors, and tomorrow's AI Driven Platforms. “ StockFit is the only financial API I’ve found that provides a true Point-In-Time (PIT) Temporal Rollback Ledger out of the box. Exposing the exact SEC amendment trail allowed me to mathematically eliminate Lookahead Bias from my quantitative execution engine in a single weekend. It is an absolute game-changer for deterministic backtesting. ” Connect StockFit to Claude, Cursor, or VS Code via MCP. Your API key becomes an AI tool. Comprehensive coverage of US equities and ETFs, sourced from official SEC filings. Income statement API, balance sheet API, cash flow statement…from developer.stockfit.io

In the maker’s words, at launch

Spent a lot of engineering time to make this possible: Daily updated fund holdings for more than 2200 funds, growing daily.

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