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mcp-builder
Anthropic's official guide skill for building high-quality MCP servers that wrap external APIs cleanly.
ArchitectureADVANCEDby Anthropic
Claude CodeClaude DesktopClaude.aimcpintegrationapi
Key Information
Install / Load
/plugin install example-skills@anthropic-agent-skills
How This Skill Works
Official Anthropic skill that turns the agent into an MCP server author. It encodes the patterns from Anthropic's own MCP work: designing tool surfaces, naming, input schemas, error handling, and testing.
Use it when you want the agent to scaffold or harden a Model Context Protocol server that exposes an external API as agent-callable tools. Pairs naturally with the MCP Inspector for testing. See /docs/understanding-mcp for background.
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dependency-upgrader
Upgrades dependencies safely: reads changelogs, identifies breaking changes, migrates code, and verifies with the test suite — one risk group at a time.