StockFit API

Financial data API for public company filing access

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About StockFit API

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.

StockFit API is built for investors, quant developers, and research platforms that want to go straight to the facts without draining their pockets.

For years I kept hitting the same wall: every time I started a side project that needed real financial data, I'd burn 80% of my time just parsing SEC filings - and never get to the actual idea.

The weird truth is that most "premium" financial data sitting behind $500–$2,000/month paywalls is actually already public on SEC's EDGAR. Every 10-K, 10-Q, 13F, insider Form 4, and proxy statement is there, for free. The catch is that EDGAR is almost aggressively hostile to practical use. XBRL filings are tagged inconsistently across filers, formats drift between fiscal years, Q4 isn't even reported as a standalone period (you have to derive it from the 10-K and the 9-month Q3 figures), and the same financial concept can map to half a dozen different tags depending on who filed. Every fintech dev I know has written, and thrown away, their own EDGAR parser at least once.

StockFit API is what I wished existed instead. It ingests EDGAR daily through a real XBRL pipeline (Arelle under the hood), reconstructs missing periods, normalizes thousands of raw concepts into a curated schema, and hands you clean JSON. Financial statements, ownership, insider transactions, ETF holdings, 13F institutional holdings, executive comp - all from one REST API with proper OpenAPI docs and an MCP server for LLM agents. The free tier is generous enough to test the product.

My goal is simple: institutional-grade SEC data, accessible for everyone. No scraping, no XBRL rabbit holes, no $2k/month minimums.

✦ Good to know

Free tier available with no credit card required for exploring data.
Every financial value is timestamped to its SEC filing with full audit trail.
Integrates with AI assistants via MCP—compatible with Claude, Cursor, and VS Code.
Personal plan covers 1 year of historical data; higher tiers offer 20+ years.
Daily updates from SEC EDGAR and supports 10-K, 10-Q, 8-K, S-1, 13F, and more.

Taken from the product's own website and re-checked automatically.

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