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US Market Data for AI Coding Assistants
Options Greeks · 0DTE Flow · SEC Filings · Short Volume · Fundamentals · Screener
Architecture · Compliance · Quick Start · Endpoints · Data Sources · FAQ
Full-stack market data for US equities — 13 layers · 30+ endpoints · 11 sources · zero-auth · only
requests.Official-source-first (V2.0): CBOE options with full Greeks + 0DTE flow, FINRA market-wide short volume, SEC EDGAR filing stream + a free market-wide screener, Treasury / CFTC / earnings calendar. Every source is labeled with its compliance tier, terms quoted verbatim — "official" does not mean "free to use".
A single self-contained Skill file that turns raw US stock data — scattered across many sources — into a toolkit an AI coding assistant can call directly. You no longer memorize Eastmoney secid prefixes, Yahoo crumb auth flows, or SEC EDGAR CIK mappings. That's all handled.
This project distributes code, not market data. Data is fetched by the user under each source's own terms. For commercial use, rely only on tier-S sources.
Compatible with Claude Code · Codex · OpenClaw. The Skill file is structured Markdown + embedded Python — any AI coding assistant with context injection can use it.
US Full-Stack Data · 13-layer architecture · V2.0
│
├── Market Data Sina + Tencent + Eastmoney push2 Real-time quotes, 25-78 fields
├── K-line Sina(back to 1984) + Yahoo chart Daily / weekly / monthly / minute
├── Technical Ind. MA/EMA + MACD + RSI + KDJ + Bollinger Pure Python, zero extra deps
├── Fundamentals Eastmoney + Yahoo + SEC XBRL Statements + key metrics + holdings
├── Fund Flow Eastmoney push2his Daily main/large/medium/small flow
├── Options Yahoo crumb Options chain (US only)
├── SEC Filing EDGAR submissions + XBRL 10-K/10-Q/8-K + 503 GAAP metrics (US)
└── Tools Eastmoney + Yahoo + SEC CIK Search + market list + news + ticker↔CIK
━━━ New in V2.0 (official-source-first) ━━━
├── Options·CBOE cdn.cboe.com official feed ⭐ full chain + IV + delta/gamma/vega/theta/rho + 0DTE + flow
├── Short Volume FINRA Reg SHO ⭐ market-wide daily short volume (12,112 symbols) + series
├── Filing Stream EDGAR daily index + FTS ⭐ Form 4 / 8-K / 13F same-day + full-text since 2001
├── Market Screener EDGAR frames ⭐ any XBRL tag across the whole market (1,842~5,309 co.) — free
└── Macro / Calendar Treasury + CFTC + Nasdaq ⭐ yield curve (1M~30Y) + COT + earnings calendar
Source terms differ a lot. "Official" does not mean "free to use". These tiers come from reading each source's actual terms of service on 2026-07-24. Quotes are verbatim.
| Tier | Commercial | Redistribute | Sources | Basis (quoted) |
|---|---|---|---|---|
| S | ✅ | ✅ | SEC EDGAR / Treasury / CFTC | EDGAR: "Anyone can access and download this information for free", "We allow scripted access". Hard limit 10 req/s, User-Agent required |
| B | ❌ | FINRA | Files are published for download, but terms prohibit "data mining, scraping or harvesting tools (including robots)" and state "non-commercial use" | |
| C | ❌ needs permission | ❌ | CBOE / Nasdaq / Yahoo / Eastmoney / Sina / Tencent | CBOE requires "approval in advance" + "execution of a license agreement"; Yahoo states personal use only |
| ⛔ Excluded | — | — | HKEX (CCASS) | Terms prohibit "any 'robot', 'bot', 'spider', 'scraper'..." and apply "whether or not for gain" → this tool ships no scraper for it |
A working HKEX shareholding layer was built, then removed. Shipping code that violates a source's terms would defeat the point of grading sources in the first place. This project distributes code, not data. For commercial use, rely only on tier S.
3 steps, 2 minutes.
# 1. Create the skill directory
mkdir -p ~/.claude/skills/global-stock-data
# 2. Download SKILL.md
curl -o ~/.claude/skills/global-stock-data/SKILL.md \
https://raw.githubusercontent.com/simonlin1212/global-stock-data/main/SKILL.md
# 3. Install the dependency
pip install requestsSEC_CONTACT in SKILL.md to your real name and email. SEC requires a declared User-Agent; requests without one are rejected as an Undeclared Automated Tool. The code raises a clear error if you forget.
Launch Claude Code and say "check AAPL's financials" — the skill activates on its own. Codex / OpenClaw users: paste SKILL.md into your system prompt or project context file; the embedded Python runs as-is.
Price — Sina / Tencent / Eastmoney quotes (25-78 fields) · Sina & Yahoo K-line (US back to 1984, daily→minute) · MA/EMA/MACD/RSI/KDJ/Bollinger computed locally.
Value — Eastmoney three statements + GMAININDICATOR (US 49 / HK 75 fields) · Yahoo quoteSummary (23 modules: financials, analysts, institutional holdings) · SEC EDGAR XBRL (503 GAAP metrics).
Flow & positioning ⭐ — CBOE options with full Greeks + IV + 0DTE + unusual-flow detection · FINRA market-wide daily short volume (12,112 symbols) · Eastmoney daily fund flow.
Filings & events ⭐ — EDGAR daily index (same-day Form 4 insider / 8-K / 13F, one day: 547 / 370 / 261) · full-text search since 2001 · 10-K/10-Q/8-K list.
Screener & macro ⭐ — EDGAR frames (any XBRL tag across the whole market, free — net income CY2025Q1 = 5,309 companies) · Treasury yield curve (1M~30Y) · CFTC COT · Nasdaq earnings calendar.
Tools — stock search (CN+EN) · full-market list (US 5925+ / HK 18000+) · news by ticker · ticker↔CIK.
Full endpoint tables
| Endpoint | Data |
|---|---|
| CBOE official | Full chain + IV + delta/gamma/vega/theta/rho, plus 0DTE filtering and unusual-flow detection (vol/OI > 1 = new positioning) |
| Yahoo (fallback) | Options chain, all expiries — no Greeks |
| Endpoint | Data |
|---|---|
| FINRA Reg SHO | Market-wide daily short volume (12,112 symbols), per-symbol series, ratio ranking |
| Endpoint | Data |
|---|---|
| EDGAR daily index | Same-day Form 4 / 8-K / 13F / 144 — one day: 547 / 370 / 261 / 118 |
| EDGAR full-text | Search every filing body back to 2001 |
| EDGAR submissions / XBRL | Filing list + structured financials (503 GAAP metrics) |
| Endpoint | Data |
|---|---|
| EDGAR frames | One XBRL tag across the whole market in one call — a free screener |
| Endpoint | Data |
|---|---|
| Treasury / CFTC / Nasdaq | Yield curve (1M~30Y) · COT · earnings calendar (pre/post-market + EPS est.) |
| Endpoint | Data |
|---|---|
| Sina / Tencent / Eastmoney push2 | US/HK real-time quotes, 25-78 fields |
| Sina / Yahoo chart | K-line, daily→minute, US back to 1984 |
| Eastmoney datacenter / GMAININDICATOR | Statements + key metrics (bilingual) |
| Yahoo quoteSummary | 23 modules: financials / analysts / institutional holdings |
| Eastmoney push2his | Daily main/large/medium/small fund flow |
| Eastmoney search / push2 list / Yahoo search / SEC CIK | Search / full-market list / news / ticker↔CIK |
Every source is free, no API key. Yahoo crumb is auto-managed; SEC EDGAR only needs a declared User-Agent.
Just tell your AI assistant:
| Scenario | Prompt |
|---|---|
| 0DTE options flow ⭐ | "Show NVDA's 0DTE options flow — unusual activity" |
| Short volume ⭐ | "TSLA's short volume ratio trend this week" |
| Insider filings ⭐ | "Any Form 4 insider filings today for my watchlist" |
| Full-text filings ⭐ | "Which companies first mentioned 'HBM4' in an 8-K" |
| Market screener ⭐ | "Rank all filers by R&D expense for CY2025Q1" |
| Macro ⭐ | "What's the 10Y-2Y Treasury spread right now" |
| US / HK quote | "AAPL's price and PE" · "How's Tencent 00700 today" |
| K-line | "Pull TSLA's daily K-line for the past 6 months" |
| Statements / valuation | "Apple's latest income statement" · "BABA's PE/PB/ROE + target" |
| Institutional holdings | "Which institutions hold NVDA, and what %" |
| Technical analysis | "AAPL's MACD and RSI — any golden cross?" |
| Batch compare | "Compare valuations of AAPL MSFT GOOGL" |
| Source | Tier | Auth | Coverage |
|---|---|---|---|
| SEC EDGAR | S | real UA | US filings / XBRL / filing stream / full-text search / market screener |
| US Treasury | S | none | Yield curve (1M~30Y) |
| CFTC | S | none | COT reports |
| FINRA | B | none | US market-wide daily short volume (verify before commercial use) |
| CBOE | C | none | US options + Greeks + IV + 0DTE (needs Cboe's prior approval) |
| Nasdaq | C | none | US earnings calendar (terms unverified) |
| Eastmoney (push2 / push2his / datacenter / search) | C | none | US+HK quotes / fund flow / statements / search |
| Yahoo Finance | C | cookie+crumb (auto) | US+HK all categories (personal use only) |
| Sina | C | none | US+HK quotes, US K-line |
| Tencent | C | none | US+HK quotes |
Tiers: S = government data, commercial + redistribution OK · B = published files, verify before commercial use · C = needs prior approval or terms unverified, personal research only. See Compliance tiers for the quoted basis. All requests go through direct HTTP with a built-in thread-safe rate limiter (SEC capped at 8 req/s against the official 10).
Q: How does this relate to a-stock-data? Sister project. a-stock-data covers China A-shares; global-stock-data covers US and HK. Install both — they don't conflict.
Q: Does Yahoo Finance need an API key? No. The code fetches cookie + crumb automatically and refreshes on expiry.
Q: Any limits on SEC EDGAR?
Yes — a declared User-Agent and 10 req/s. Set SEC_CONTACT to your real email; the built-in throttle stays under the limit.
Q: HK options data? No. HK options aren't in Yahoo's coverage and need HKEX's paid feed. The options layer is US only.
Q: Running from a server in mainland China — can it reach Yahoo / SEC? They're overseas and may be flaky on a direct connection. Use a proxy, or lean on the Eastmoney / Sina / Tencent sources.
Q: Can I use it without Claude Code? Yes. SKILL.md is Markdown + embedded Python — Codex, OpenClaw, or any AI coding assistant can read it, and you can copy the Python into your own scripts.
See CHANGELOG.md.
This project provides data-access tools only. It is not investment advice. Investing involves risk.
If this saved you time, a coffee is appreciated ☕
Want a data endpoint that isn't here? Open an Issue; sponsors' issues go first.
Apache License 2.0 — Author: Simon Lin · X @linsizhen · Email: [email protected]