Type: url
Original: https://jannesklaas.github.io/ai/2025/07/20/claude-code-agent-design.html
Status: generated
Language: en
Summary
Jannes Klaas’s July 2025 blog post reports what he learned about agent design by inspecting Claude Code’s API requests through a proxy. He finds its design relatively simple — a single while(tool_use) agent loop with 14 tools — and attributes its ability to stay on track over long sessions to a few techniques: TODO lists for planning, fixed instructions appended to tool results, statically generated system reminders, sub-agents dispatched through a Task tool, and a call to Claude Haiku that extracts file paths from commands.