Building an MCP Client: Discovery, Routing, and Dual-Era Fallback
A modern MCP client repeats its contract on every request. Its hardest compatibility decision is knowing when an old server is truly old and when a modern server is reporting a correctable error.
Visual edition planned
This lesson isn’t interactive yet.
It is part of the curriculum and will get the same treatment as Phase 1 — a visual cover, hands-on labs, derivations with numeric checks and a quiz. Until then, the original lesson is the best place to read it:
Part of Phase 13 — Tools & Protocols. Use the previous / next cards below to keep browsing the phase.