## When to Use

- User wants to build an MCP server (stdio or Streamable HTTP)
- User wants to wrap a REST API as MCP tools
- User asks about MCP architecture, tool/resource/prompt schemas, or transports
- User wants to monetize an MCP server (free tier, API keys, x402 micropayments, Stripe subscriptions)
- User wants OAuth/bearer auth on a remote MCP server, or to deploy/list one
- User mentions `@modelcontextprotocol/sdk`, `mcp` Python package, FastMCP, or MCP in general

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