Agent Skills add plug‑in style abilities to Claude via progressive loading and sandboxed execution—simpler than MCP for repeatable work.

Check more stories related to machine-learning at: https://hackernoon.com/c/machine-learning.

You can also check exclusive content about #agentic-ai, #prompt-engineering, #anthropic-agent-skills, #ai-workflows, #llm-applications, #ai-automation, #enterprise-ai-tools, #deterministic-ai, and more.

This story was written by: @superorange0707. Learn more about this writer by checking @superorange0707's about page,

and for more stories, please visit hackernoon.com.

- **Agent Skills** are *modular capability packs* for Claude: metadata + instructions + resources/scripts that Claude can load **only when relevant**.

- The killer feature is **progressive disclosure**: Claude initially reads just `name` + `description`, then loads full instructions only after the user agrees, and executes code in a **sandbox**.

- **Skills ≠ MCP**: Skills are “inside-Claude” workflow modules; **MCP** is an open protocol for connecting models to external tools/data via client/server.

- Best practice: use **Skills for standardised internal work** (docs, spreadsheets, review checklists) and **MCP for external systems** (databases, SaaS APIs, live data).