# architecture

Paweł Huryn shared a powerful practice: add one instruction to CLAUDE.md so Claude records every architectural decision. No more spending 30 minutes rehashing why you chose Postgres over DynamoDB—the reasoning is preserved in /decisions/.

OpenClaw and Hermes are both handing low-level coding-agent execution to Codex app server. This is not just a model switch. It is the agent product stack separating model, execution engine, and chat surface.

Hermes Agent and OpenClaw shipped big releases the same day. Hermes v0.10.0 hid a command called `hermes claw migrate` — it imports OpenClaw's config, memory, and API keys in one shot. ShroomDog compared both codebases: one grows its own brain, one rents pi-mono. Stay or move?

Someone deployed Milvus to search 5,000 vectors. That's like calling a fire truck to water a desk succulent. This post uses dead-simple math to compare vector databases vs. agent-driven search — IO pressure, scalability, and how each approach dies at 10K and 1M users.

Claude Code CLI's core philosophy is think first, act later: SWE-bench gains, Plan Mode, Extended Thinking, multi-agent architecture, and WebSearch. Opus even researched Claude Code's latest features and reviews from inside a secure Podman container.

Understanding OpenClaw architecture from scratch. Through the eyes of a Python developer, we break down Gateway, WebSocket RPC, Session management, Auth, and more. Quiz at every floor!

Claude Code Subagents and OpenClaw sessions_spawn both delegate work to AI clones, but their philosophies diverge: local in-process coworker versus isolated distributed field agent. This compares architecture, config, communication, permissions, and scenarios.