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How Skills work

A Skill is a single SKILL.md file with YAML frontmatter. When you point a markdown-aware agent at it, the agent reads the file as system context and learns:
  1. What domain this Skill covers (equity fundamentals, crypto futures, etc.)
  2. The base URL and auth header
  3. Every available endpoint, parameter, and response shape
  4. Edge cases and conventions (e.g. fiscal vs calendar quarters)
The agent then composes its own HTTP calls — no plugin runtime, no MCP server, just text.
All 19 Skills are open-source MIT at github.com/ArraysData/arrays-skills.

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Agent compatibility matrix

Skills work with any agent that supports the open Skill standard. See the full list of compatible agents at skills.sh/agent.

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Available Skills

19 skills across equities, crypto, ETFs, macro, and alternative data. Each is a SKILL.md you point your agent at.

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Equities

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Crypto

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ETF & Macro

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Alternative Data

Browse the source for any skill in the arrays-skills repo.

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Next step

Install your first Skill

Pick your agent and follow a 30-second guide.