Flesh out README.md with content from home.mdx

Mirror the What/Why/How/Where overview sections from `home.mdx` so
GitHub visitors see the same pitch as the docs landing page.

Also add a static Discord badge at the top, reframe the Discord bullet
in "Getting Started" around the builder focus described in the Discord
announcement post, and rename "About" to "Open development" with a
pointer to `CONTRIBUTING.md`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jonathan Hefner
2026-04-22 10:20:25 -05:00
co-authored by Claude Opus 4.7
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# Agent Skills
[Agent Skills](https://agentskills.io) are a simple, open format for giving agents new capabilities and expertise.
[![Discord](https://img.shields.io/badge/Discord-Join-5865F2?logo=discord&logoColor=white)](https://discord.gg/MKPE9g8aUy)
Skills are folders of instructions, scripts, and resources that agents can discover and use to perform better at specific tasks. Write once, use everywhere.
A standardized way to give AI agents new capabilities and expertise.
## Getting Started
## What are Agent Skills?
Agent Skills are a lightweight, open format for extending AI agent capabilities with specialized knowledge and workflows.
At its core, a skill is a folder containing a `SKILL.md` file. This file includes metadata (`name` and `description`, at minimum) and instructions that tell an agent how to perform a specific task. Skills can also bundle scripts, reference materials, templates, and other resources.
```
my-skill/
├── SKILL.md # Required: metadata + instructions
├── scripts/ # Optional: executable code
├── references/ # Optional: documentation
├── assets/ # Optional: templates, resources
└── ... # Any additional files or directories
```
## Why Agent Skills?
Agents are increasingly capable, but often don't have the context they need to do real work reliably. Skills solve this by packaging procedural knowledge and company-, team-, and user-specific context into portable, version-controlled folders that agents load on demand. This gives agents:
- **Domain expertise**: Capture specialized knowledge — from legal review processes to data analysis pipelines to presentation formatting — as reusable instructions and resources.
- **Repeatable workflows**: Turn multi-step tasks into consistent, auditable procedures.
- **Cross-product reuse**: Build a skill once and use it across any skills-compatible agent.
## How do Agent Skills work?
Agents load skills through **progressive disclosure**, in three stages:
1. **Discovery**: At startup, agents load only the name and description of each available skill, just enough to know when it might be relevant.
2. **Activation**: When a task matches a skill's description, the agent reads the full `SKILL.md` instructions into context.
3. **Execution**: The agent follows the instructions, optionally executing bundled code or loading referenced files as needed.
Full instructions load only when a task calls for them, so agents can keep many skills on hand with only a small context footprint.
## Where can I use Agent Skills?
Agent Skills are supported by a large number of AI tools and agentic clients — see the [Client Showcase](https://agentskills.io/clients) to explore some of them!
## Getting started
- **[Documentation](https://agentskills.io)** — Guides and tutorials
- **[Specification](https://agentskills.io/specification)** — Format details
- **[Example Skills](https://github.com/anthropics/skills)** — See what's possible
- **[Discord](https://discord.gg/MKPE9g8aUy)** — Join the discussion!
- **[Discord](https://discord.gg/MKPE9g8aUy)** — Share what you're building!
This repo contains the specification, documentation, and reference SDK. Also see a list of example skills [here](https://github.com/anthropics/skills).
## Open development
## About
Agent Skills is an open format maintained by [Anthropic](https://anthropic.com) and open to contributions from the community.
The Agent Skills format was originally developed by [Anthropic](https://www.anthropic.com/), released as an open standard, and has been adopted by a growing number of agent products. The standard is open to contributions from the broader ecosystem — see [`CONTRIBUTING.md`](CONTRIBUTING.md) for how to get involved.
## License