r/datasets • u/DanielAPO • 1h ago
API [self-promotion] Free financial data API for AI agents and LLMs: full-text SEC filings, earnings call transcripts, 13F, congressional trades, short interest (a Financial Datasets alternative with a free tier)
Disclosure: I run this, it's Equibles. In May I posted the self-hosted version of the pipeline here. This is the hosted one, which now also covers non-US stocks and is built to be used by AI agents (over MCP) as well as by code (REST).
What's in it:
- SEC filings, full text (10-K, 10-Q, 8-K, proxies). You can search inside a filing and pull the exact lines, not just metadata
- financial statements and KPIs as reported, each tagged with fiscal period and filing date
- earnings call transcripts, by speaker
- 13F institutional holdings: holders of a stock, or a manager's full portfolio
- insider transactions (Forms 4 and 5) and congressional trades (House and Senate)
- short interest, daily short volume, fails to deliver, off-exchange volume, a squeeze score, and a model estimate of the next FINRA short interest
- executive compensation, government contracts, buybacks, going-concern flags, IPO filings
- prices for US, European, UK, Hong Kong and Chinese listings (end of day on the free plan), option chains on paid plans
- Fed economic series and CFTC data
How to get at it:
- MCP, for AI agents:
https://mcp.equibles.com/mcp(Claude, ChatGPT, Cursor and others) - REST: https://equibles.com/docs/api
- free plan: 100 requests a day across both, no card. Plus is $9.99 a month for 10,000 a day. Pro adds bulk CSV downloads (short interest, short volume, FTD, buybacks and a few more, one file per year)
- self-host: the open source core (AGPL-3.0) pulls the SEC data itself: https://github.com/daniel3303/Equibles
One detail for the backtesting crowd: short interest bulk rows carry FINRA's publication date, so you only use numbers that were public at the time.
Why "Financial Datasets alternative" in the title: it's the name I see most for financial data APIs aimed at AI agents. From their pricing page they don't have a free tier, and transcripts, congressional trades and short interest aren't on their list. If I've got that wrong, correct me and I'll fix the post.
So that's the pitch, a free financial data API for AI agents and the humans who build them. What would make it more useful as a dataset source for you: bulk files for more datasets, point-in-time snapshots, something else?