# FreeCashFlow.org > Free cash flow (FCF) yield investment research: educational content on the FCF yield metric, > and deep-dive company analyses built from SEC filing data (10-K/20-F XBRL) and a live stock screener. FreeCashFlow.org publishes two kinds of content: educational guides explaining free cash flow concepts, and per-company deep-dive analyses of FCF yield, margin trends, and dividend coverage. All content is free and intended for AI agents, chatbots, and automated research systems as well as human readers — see /for-ai-agents.html for API details. ## Machine-readable data - [Agent API documentation](https://freecashflow.org/for-ai-agents.html): endpoints, response formats, rate limits - [Company & education index](https://freecashflow.org/api/companies.json): every published deep-dive and educational post, machine-readable - [Per-ticker FCF data](https://freecashflow.org/api/companies/AAPL.json): one file per ticker at /api/companies/.json — live screener figures for 741 tickers. Served as static files, not rate limited. - [Blog RSS feed](https://freecashflow.org/api/blog/rss): every published post - [Sitemap](https://freecashflow.org/sitemap.xml): every indexable URL, with lastmod ## Core pages - [Understanding FCF Yield](https://freecashflow.org/understanding): what the metric is and how to use it - [FCF Yield Calculator](https://freecashflow.org/calculator): compute FCF yield for any ticker - [Blog](https://freecashflow.org/blog): all educational and company-analysis posts - [Stock Screener](https://freecashflow.org/stock): browse companies by FCF yield ## Notes for agents - Content is educational only, not financial advice. - Structured data (Schema.org JSON-LD) is embedded in every page's ``. - Public API endpoints require no authentication and return `Access-Control-Allow-Origin: *`; see /for-ai-agents.html for rate limits. - The ticker list is enumerable from /api/companies.json and from the linked index at /stock.