Claude Code之父：Harness保质期只有半年，解开缰绳吧

TL;DR - Claude Code creator Boris Cherny argues that rapidly improving models make prompts, skills, hooks, and agent harnesses obsolete within months. Teams should repeatedly use ablation tests to remove scaffolding, loosen constraints, and emphasize self-verification for longer autonomous operation.

• Claude Code reportedly removed over 80% of its instructions for newer Claude models, retaining mainly safety, permissions, and static-analysis controls.
• Cherny recommends rebuilding system prompts line by line based on observed failures rather than assumptions inherited from older models.
• “Product overhang” describes how model capabilities advance faster than products expose them, creating opportunities through better tools and less restrictive interfaces.
• Agents should receive ambitious, clearly bounded tasks and mechanisms to verify their own output, enabling extended independent execution.