Technical articles on the Claude Certified Architect exam, Claude Code architecture, MCP integration patterns, and agent design — written for developers building with Claude.
A comprehensive breakdown of the Anthropic Claude Certified Architect (Foundations) exam — all five domains with exam weights, scenario question format, and a free study roadmap you can start today.
Claude Code applies two complementary OS-level isolation layers — filesystem containment and network proxying — to prevent prompt injection attacks from affecting the broader system, while cutting permission prompts by 84%.
Loading all MCP tool definitions upfront costs 150,000 tokens before any work begins. A filesystem-discovery pattern combined with local code execution cuts that to 2,000 tokens — here is how it works.
Tool search, programmatic tool calling, and usage examples are three beta Claude API features that independently address token bloat, inference latency, and parameter errors in production agents.
Multi-session AI agents fail in four predictable patterns: over-ambition, false completion, environmental chaos, and testing gaps. The harness architecture — initializer agents, JSON feature lists, git checkpoints — addresses each one.