Claude Skills vs MCP: What’s the Difference?
Skills and MCP are complementary rather than direct replacements. They solve different layers of the agent stack: Skills teach a procedure; MCP exposes capabilities and data.
Quick answer
Use a Skill when Claude needs to know how to perform a repeatable workflow. Use MCP when Claude needs to call an external tool, query a service or access data outside its normal environment. Strong workflows often use both.
Choose Skills for procedural knowledge
A Skill can encode a review checklist, document workflow, deployment procedure or domain-specific method without requiring an external server.
Choose MCP for external capability
An MCP server can expose APIs, databases, SaaS products and internal systems as tools or resources Claude can access.
Use both when the workflow spans systems
A Skill can teach Claude the multi-step process while MCP provides the external actions or information that process requires.
Decision rule
Need repeatable instructions? → Skill
Need external tool/data access? → MCP
Need project-wide rules? → CLAUDE.md
Need procedure + external actions? → Skill + MCPOfficial Claude documentation
Claude Code changes quickly. Use Anthropic’s documentation as the source of truth for current configuration fields and behavior.
Open Anthropic docs →Related Claude tools and guides
Frequently asked questions
Do Skills replace MCP?
No. Skills package procedural knowledge, while MCP connects Claude to external capabilities and data.
Can a Skill use tools exposed through MCP?
A workflow described by a Skill can use tools available to Claude, including MCP-provided tools when configured and permitted.
Which should I build first?
If Claude lacks know-how, start with a Skill. If Claude lacks access to a system or data source, add MCP.