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Clarify commercial free tiers and remove retired offers (#677)

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Wilson Freitas
2026-09-13 17:03:32 -03:00
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@@ -708,25 +708,23 @@ A curated list of insanely awesome libraries, packages and resources for Quants
- [Teses da Bolsa](https://tesesdabolsa.com) - Brazilian stock and FII analysis with free essential fundamentals, one year of price history, Bazin and Graham valuations, and the latest CVM statements, without a credit card.
- [13F Insight](https://13finsight.com/) - Institutional holdings research with a free tier offering one year of holdings history and five AI questions per day, without a credit card.
- [PortfolioSavvy](https://portfoliosavvy.com/) - Public SEC ownership research web app for exploring 13F portfolios, insider activity, Schedule 13D/G filings, company facts, and latest filing workflows.
- [Earnings Feed](https://earningsfeed.com/api) - Real-time SEC filings, insider trades, and institutional holdings API.
- [Earnings Feed](https://earningsfeed.com/api) - SEC filings, insider transactions, and institutional holdings API with a permanent free tier of 5,000 requests per month and 15 requests per minute, without a credit card. [GitHub](https://github.com/earningsfeed/earningsfeed-python)
- [EDGAR Events](https://edgarevents.com) - `REST` - SEC filing events as typed JSON: 8-K item codes with materiality flags, SC 13D/13G activist stakes (holder, target, percent of class), merger forms, and S-1/424B IPO filings, polled over REST or pushed via HMAC-signed webhooks, sourced from data.sec.gov.
- [FilingPulse](https://filingpulse.io) - `REST` `MCP` - Real-time SEC EDGAR filings normalized to one JSON schema: Form 4 insider trades, 8-K corporate events, and S-1/IPO registrations, delivered via REST, HMAC-signed webhooks, and a hosted MCP server, with a permanent free tier (2,500 req/mo, full schema).
- [Insider Alert Bot](https://jaredmansu.github.io/insider-alerts/) - Real-time SEC Form 4 insider-trading alerts pushed to Discord, filtered to large buys, multi-insider cluster buys, first-time insider buyers, and notable executive sales on NYSE and NASDAQ listings, with a permanent free channel carrying every alert on a 45-minute delay and a $5/month tier that removes it.
- [Financial Data](https://financialdata.net/) - Stock Market and Financial Data API.
- [Financial Data](https://financialdata.net/) - Financial data API with a free personal-use plan allowing 300 requests per day for symbol lists and selected market data, including historical commodity and OTC prices. [GitHub](https://github.com/financialdatanet/fdnpy)
- [Filings Flow](https://filingsflow.com) - Free SEC 13F research web app covering 11,700+ institutional managers and 208,000+ filings from 2019 onward. Quarter-over-quarter position changes with share-based thresholds, confidential-treatment reveals badged, per-filing links to the EDGAR source document, and Excel export on every table. No account required.
- [Frostbyte](https://agent-gateway-kappa.vercel.app) - Real-time crypto prices for 500+ tokens via REST API with free tier, DeFi swap routing and portfolio tracking.
- [Frostbyte](https://agent-gateway-kappa.vercel.app) - Hosted API gateway providing cryptocurrency price data, with a permanent free allowance of 50 requests per day without signup or payment information. [GitHub](https://github.com/Robocular/frostbyte-api)
- [SaxoOpenAPI](https://www.developer.saxo/) - Saxo Bank financial data API.
- [RTPR](https://rtpr.io) - Real-time press release API delivering news from Business Wire, PR Newswire, and GlobeNewswire with sub-500ms latency. REST and WebSocket APIs for financial applications. Python and Node.js SDKs available.
- [RTPR](https://rtpr.io) - Financial press-release platform covering Business Wire, PR Newswire, GlobeNewswire, and AccessWire, with a permanent free Wire dashboard delayed five minutes and no credit card required.
- [Nasdaq Data Link](https://data.nasdaq.com/tools/full-list) - Financial data API with support for R, Python, Excel, Ruby, and many other languages (formerly Quandl).
- [Portfolio Optimizer](https://portfoliooptimizer.io/) - Portfolio Optimizer is a Web API for portfolio analysis and optimization.
- [Reddit WallstreetBets API](https://tradestie.com/apps/reddit/api/) - Provides daily top 50 stocks from reddit (subreddit) Wallstreetbets and their sentiments via the API.
- [System R](https://systemr.ai/) - AI-native risk intelligence API for trading agents. Position sizing, risk validation, and system health in one call.
- [Telonex](https://telonex.io) - Tick-level prediction market data (trades, quotes, orderbooks, on-chain fills) via REST API and Python SDK.
- [Portfolio Optimizer](https://portfoliooptimizer.io/) - Portfolio analysis and optimization API with anonymous free access to selected endpoints for up to 20 assets, subject to a shared one-request-per-second limit.
- [Reddit WallstreetBets API](https://tradestie.com/apps/reddit/api/) - Free WallstreetBets ticker mentions and sentiment API with historical date queries and a limit of 20 requests per minute per IP, without an API key.
- [Telonex](https://telonex.io) - Prediction-market data service with free market metadata and tag datasets without an account, while tick-level data requires paid access after five trial file downloads.
- [ValueRay](https://www.valueray.com/api) - Technical, quantitative and sentiment data for stocks and ETFs with risk metrics, peer percentiles and market regime signals. Optimized for AI/LLM agents.
- [VantageGrid](https://vantagegrid.pro/) - Quantitative trade-review workspace for futures and prop-firm traders, with MFE/MAE, R-multiple, Monte Carlo, drawdown, multi-account, and playbook-compliance analytics.
- [VantageGrid](https://vantagegrid.pro/) - Trade-review workspace with a permanent free tier for 25 trades per month, CSV imports and P&L, win-rate and R-multiple analytics without payment information.
- [VertData](https://vertdata.com) - Institutional-grade financial intelligence platform. Track 43K+ congressional trades (STOCK Act), SEC insider Form 4 filings, 25 superinvestor 13F portfolios, CFTC futures positioning, ARK ETF holdings, and short interest — all scored by AI for signal strength.
- [KeepRule](https://keeprule.com/en) - Curated library of decision-making principles and investment wisdom from masters like Buffett and Munger, featuring mental models for better investment thinking.
- [Agent Toolbelt](https://www.agenttoolbelt.live) - AI stock-research API returning structured analysis (investment thesis, valuation verdict, insider-signal read, earnings, bull-vs-bear, moat, watchlist ranking) for US equities from Polygon/Finnhub/FMP data. Optimized for LLM agents; free tier.
- [KeepRule](https://keeprule.com/en) - Investment decision frameworks with a permanently free library of investor principles and scenarios covering valuation, position sizing and risk discipline.
- [Agent Toolbelt](https://www.agenttoolbelt.live) - Stock-research and portfolio-review API with 250 free calls per month without payment information. [GitHub](https://github.com/marras0914/agent-toolbelt)
- [ML-Quant](https://www.ml-quant.com/) - Top Quant resources like ArXiv (sanity), SSRN, RePec, Journals, Podcasts, Videos, and Blogs.
- [RealMarketAPI](https://realmarketapi.com/en-US) - Market data API for gold, forex, cryptocurrencies, and stocks through REST, WebSocket, and MCP.
- [Probalytics](https://probalytics.io) - Prediction market data infrastructure for Polymarket and Kalshi, with REST API, ClickHouse SQL access, 200–500M orderbook snapshots/day at 1ms resolution, and Parquet bulk exports.