How Skills work
A Skill is a singleSKILL.md file with YAML frontmatter. When you point a markdown-aware agent at it, the agent reads the file as system context and learns:
- What domain this Skill covers (equity fundamentals, crypto futures, etc.)
- The base URL and auth header
- Every available endpoint, parameter, and response shape
- Edge cases and conventions (e.g. fiscal vs calendar quarters)
All 14 Skills are open-source MIT at github.com/ArraysData/arrays-skills.
Agent compatibility matrix
| Agent / IDE | Status | How to install |
|---|---|---|
| Claude Code | ✅ Supported | Install guide → |
| Cursor | ✅ Supported | Install guide → |
| Windsurf | ✅ Supported | Same as Cursor — add to project rules |
| OpenAI Codex | ✅ Supported | Install guide → |
| ChatGPT (custom GPTs) | ⚠️ Workaround | Paste SKILL.md contents into instructions |
| Other markdown-aware agents | ✅ Generally compatible | Add SKILL.md to agent context |
Available Skills
17 skills across equities, crypto, ETFs, macro, and alternative data. Each is aSKILL.md you point your agent at.
Equities
| Skill | What it does |
|---|---|
arrays-data-api-equity-fundamentals | Company profiles, financials, executive comp, KPIs |
arrays-data-api-equity-estimates-and-targets | Analyst estimates, price targets, earnings guidance |
arrays-data-api-equity-events | Dividends, splits, earnings calendar, transcripts, SEC filings, IPO, M&A |
arrays-data-api-equity-ownership-and-flow | Institutional holdings, insider & congress trades |
arrays-data-api-stock-metrics | Financial + technical metrics (ROE, margins, RSI, MACD, PE…) |
arrays-data-api-stock-screener | Screen stocks by country, sector, financials, events |
arrays-data-api-options | Option contracts, strikes, expiry, options OHLCV |
Crypto
| Skill | What it does |
|---|---|
arrays-data-api-spot-market-price-and-volume | Spot price / volume / OHLCV (Binance, Hyperliquid) |
arrays-data-api-crypto-futures-data | Perp OHLCV, funding rates, open interest, long-short ratios |
arrays-data-api-crypto-metrics-and-screener | On-chain metrics (MVRV, NUPL, SOPR…), fear & greed, token screener |
arrays-data-api-crypto-exchange-flow | Exchange inflow / outflow / netflow |
arrays-data-api-company-crypto-holdings | Which companies hold which crypto |
ETF & Macro
| Skill | What it does |
|---|---|
arrays-data-api-etf-fundamentals | Holdings, info, country/sector weightings, fund flow |
arrays-data-api-macro-and-economics | Treasury, CPI, GDP, forex, commodities, VIX |
Alternative Data
| Skill | What it does |
|---|---|
arrays-data-api-news | Market news articles |
arrays-data-api-social-feeds | X/Twitter handle feeds, post lookup, account metadata |
arrays-data-api-polymarket | Prediction markets — pricing, positions, holders, trade history |
Browse the source for any skill in the arrays-skills repo.
Next step
Install your first Skill
Pick your agent and follow a 30-second guide.