How Anthropic Skills Change Agent Tooling — and How to Build a Custom Skill for Milvus to Quickly Spin Up RAG

This post introduces Anthropic Skills as a modular alternative to MCP-style tool definitions for AI agents. It details the structure of a Skill (SKILL.md, scripts/, templates/, resources/) and provides a hands-on tutorial for creating a custom Skill for Milvus. This Skill automates the setup of Milvus collections and RAG pipelines from natural language prompts, including environment setup, intent parsing, Milvus schema and index configuration, and data ingestion with embedding generation. The implementation demonstrates how Skills can significantly reduce the boilerplate and complexity of setting up RAG systems, lowering the barrier to entry for new developers and improving consistency for experienced teams.