L13 · MCP Concepts: Servers, Clients, and Capabilities
Reviewed 2026-09-29 · MCP: 2026-07-28. Re-check version-sensitive claims against the pinned context before applying them to a current system.
AI From Zero to Builder
Frontier
Version-sensitive lessons that stay in the canonical course while being reviewed against dated protocol, ecosystem, capability, or research context.
212stable lessons
9frontier lessons
0draft lessons
How to use Frontier lessons
Frontier does not mean “optional” or “unreviewed.” These lessons are authored and reviewed, but the facts they depend on can change faster than stable-core concepts. Each entry below comes from the canonical curriculum and keeps its recorded review date and technology snapshot.
When a lesson names a protocol version, benchmark snapshot, or dated capability claim, treat that metadata as part of the lesson. If your current environment differs, verify the changed behavior before copying the conclusion into a product.
Open L13 · MCP Concepts: Servers, Clients, and Capabilities page
L13 · MCP Server Design
Reviewed 2026-09-29 · MCP: 2026-07-28. Re-check version-sensitive claims against the pinned context before applying them to a current system.
L13 · Connect an MCP Client
Reviewed 2026-09-29 · MCP: 2026-07-28. Re-check version-sensitive claims against the pinned context before applying them to a current system.
L13 · Security and Trust in MCP
Reviewed 2026-09-29 · MCP: 2026-07-28. Re-check version-sensitive claims against the pinned context before applying them to a current system.
L13 · Agent-to-Agent Communication Concepts
Reviewed 2026-09-29 · A2A: 1.0.0. Re-check version-sensitive claims against the pinned context before applying them to a current system.
L13 · A2A Messages, Tasks, and Artifacts
Reviewed 2026-09-29 · A2A: 1.0.0. Re-check version-sensitive claims against the pinned context before applying them to a current system.
L15 · Frontier Model Capabilities and Limits
Reviewed 2026-09-29 · Snapshot: 2026-09-26. Re-check version-sensitive claims against the pinned context before applying them to a current system.
L15 · Emerging Agent Protocols and Ecosystems
Reviewed 2026-09-29 · MCP: 2026-07-28 · A2A: 1.0.0 · Snapshot: 2026-09-29. Re-check version-sensitive claims against the pinned context before applying them to a current system.
L15 · Research Reading and Reproduction
Reviewed 2026-09-29 · Snapshot: 2026-09-29. Re-check version-sensitive claims against the pinned context before applying them to a current system.