Pick any production AI agent (Claude Code, Cursor, Manus, Devin, Copilot, etc.) and identify as many of the 9 harness components as you can from its public docs, blog posts, or your own usage.
Agent: Claude Code
Loop: ReAct-style, Think → Tool Call → Observe
Tools: Read, Write, Edit, Bash, Search (~15 tools)
Permissions: Allowlist + bash sandboxing
Context: Auto-compaction at 80% capacity
Memory: CLAUDE.md + session persistence
Errors: Injects errors into context, retries
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