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Free academic US equity 1-minute bar data and global economic time series (ElkassabgiData).
About
Free academic US equity 1-minute bar data and global economic time series (ElkassabgiData).
Remote endpoints: streamable-http: https://elkassabgidata-mcp.elkassabgi.workers.dev/mcp
Security Report
3.8
Use Caution3.8High RiskThis is a comprehensive Cloudflare Workers API for a financial data service with substantial authentication and authorization infrastructure. The code demonstrates good security practices including rate limiting, session management, 2FA support, and audit logging. However, several moderate concerns exist: hardcoded admin email addresses and configuration constants in source code, potential excessive logging of user details in admin emails, and some input validation gaps in derived data endpoints. The permissions align well with the service's purpose (network access for OAuth/email, database for user management, env vars for secrets), but the combination of admin panel functionality and user data exposure warrants careful operational review. Supply chain analysis found 5 known vulnerabilities in dependencies (1 critical, 0 high severity).
4 files analyzed · 12 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install & Connect
Available as Local & Remote
This plugin can run on your machine or connect to a hosted endpoint. during install.
Documentation
View on GitHubFrom the project's GitHub README.
HF Data Library
Free 1-minute OHLCV bars for 1,391 U.S. stocks and ETFs, December 2002 → present, updated daily.
Website / downloads: https://hfdatalibrary.com · API: https://api.hfdatalibrary.com · DOI: 10.5281/zenodo.19501605
Data sources
| Period | Source | Coverage |
|---|---|---|
| Dec 2002 – Mar 2022 | PiTrading (consolidated tape, CTA/UTP) | All U.S. equity exchanges |
| Mar 2022 – present | IEX Exchange market data (HIST pcap files) | IEX exchange only, ~2–3% of consolidated volume — a reference point, not the full tape |
Post–March 2022 bars reflect IEX-only trading activity. Some tickers have no IEX trades on a given day. See Known Issues before using the post-2022 segment for research.
Upstream source attribution (required)
Bars dated 2022-03-07 onward are derived from IEX market data. If you redistribute or provide access to this data, include:
Data provided for free by IEX. By accessing or using IEX Historical Data, you agree to the IEX Historical Data Terms of Use.
IEX retains all rights in the underlying securities information.
License
The compilation, documentation, and pre-2022 portion are licensed CC BY 4.0 — cite Elkassabgi, A. (2026). HF Data Library: Free 1-Minute Intraday U.S. Equity Data. Zenodo. https://doi.org/10.5281/zenodo.19501605. Post–March 2022 bars additionally remain subject to the IEX Historical Data Terms of Use above.
Repository contents
This repo holds the website (index.html, pages/), the Cloudflare Worker API (api/), and the daily data pipeline (pipeline/ — IEX HIST pcap download, Go TOPS parser, bar building, 9-step cleaning, R2 upload). The data itself is distributed from https://hfdatalibrary.com, not from this repository.
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