Chapter 12: MCP Integration and External Protocols
"Protocols are the language systems use to communicate; good protocols turn integration into composition rather than coding." -- Adapted from Designing Distributed Systems
Learning Objectives: After reading this chapter, you will be able to:
- Understand the technical background behind MCP (Model Context Protocol), its design philosophy, and the core problems it solves
- Master the use cases, performance characteristics, and selection strategies for 8 connection configuration variants
- Analyze in depth the design logic behind 7 configuration scopes and the three-layer security strategy
- Understand the Bridge system's bidirectional communication architecture, SSE sequence number continuation, and multi-session security design
- Master the complete pipeline of MCP tool discovery, mapping, naming, and permission models
- Design enterprise-grade MCP security strategies, configure allowlists/denylists, and IDE integration
- Understand how MCP integration collaborates with the tool system (Chapter 3), hook system (Chapter 8)