Add OAuth auth to FastAPI + FastMCP (Scalekit)

When to use this skill vs the FastMCP skill

Use THIS skill when:

• You need custom FastAPI middleware, routes, or dependency injection alongside MCP tools
• You're adding MCP to an existing FastAPI application
• You need more control over request handling than FastMCP's built-in ScalekitProvider offers

Use the mcp-auth-fastmcp-scalekit skill instead when:

• You're building a standalone MCP server and don't need FastAPI-specific features
• You want the simplest possible setup (5-line auth config)