MCP Protocol Mastery

Understand MCP 2026-07-28: stateless requests, server discovery, Tools, Resources, Prompts, Streamable HTTP, OAuth, MRTR, caching, and security controls.

Build MCP 2026-07-28 servers with stateless HTTP, explicit state handles, OAuth authorization, bounded results, safe retries, and auditable operations.

Compare Node.js and Go for an MCP server without treating a single benchmark as a universal ranking. This guide separates transport, JSON-RPC framing, tool execution, downstream I/O, memory, tail latency, deployment and team cost, then provides a reproducible workload protocol and a decision matrix for migration.

Implement the parts of a Go MCP transport that are easy to get wrong: protocol-profile selection, server-issued session state, JSON-RPC correlation, bounded event queues, cancellation, heartbeats, proxy buffering, authentication, and graceful shutdown. The guide treats legacy SSE as a compatibility path and does not present a partial transport as a complete production server.

Design a production MCP Gateway for MCP 2026-07-28 stateless core. Learn header routing, OAuth boundaries, backpressure, safe retries, caching, and load tests.

Build an MCP 2026-07-28 server with Node.js, TypeScript SDK v2, Zod, stdio, structured results, and reproducible Inspector tests with clear boundaries.

Master the craft of writing tools that LLMs can use reliably. This guide covers the anatomy of a great tool definition, 10 practical best practices for MCP tools and function-calling schemas, anti-patterns to avoid, testing strategies, and composition patterns — with before/after code examples.

A version-aware guide to MCP specification changes around remote HTTP, authorization, sessions, tool annotations, and capability discovery. It separates normative protocol requirements from OAuth profiles, SDK behavior, registries, and host conventions, then provides a migration checklist and tests for upgrading a server without turning hints or discovery metadata into security controls.

A version-aware guide to MCP registries and catalogs. Learn what a registry can prove about a server, how package and remote metadata should be reviewed, how enterprises can curate a private index, and how to design approval, provenance, credential, rollback, and deletion controls before an MCP capability reaches an Agent.

A production guide to composing MCP tool boundaries, A2A-style remote task delegation, and A2UI-style user interface contracts. Learn which boundary each approach serves, when a local workflow is safer, how to enforce identity and object authorization, and how to test artifacts, actions, cancellation, retries, privacy, and rollback.

A production guide to using MCP-style tool boundaries in multi-Agent systems without confusing schemas or protocol metadata for authorization. Learn how to combine trusted identity, object-level policy, limits, approval, concurrency control, audit, untrusted tool-result handling, and failure recovery around a pinned protocol implementation.

Design an enterprise OAuth boundary for a remote MCP server without confusing authentication with authorization. This guide covers protected-resource metadata, discovery, PKCE, JWT validation, JWKS rotation, delegated downstream access, tenant isolation, browser boundaries, and production testing.

A practical guide to evaluating MCP-based products without confusing a protocol with an app store. Learn how Hosts, Clients, Servers, Tools, Resources, identity, billing, approvals, and distribution fit together, when a capability should become a product, and which reliability, privacy, and supply-chain controls must be in place before publication.