this claude source code leak is wild the more you read into it >be anthropic >2025: "the model is the product" >2026: "actually the harness IS the product" >harness = how you make a model actually WORK >permissions, sub-agents, memory compaction, background tasks, failure recovery >basically the difference between a chatbot and an employee >anthropic literally publishes blog post saying "harness design is the key to agent performance" >weeks later ships source maps in npm package >50k lines of how the sausage gets made >competitors now know exactly how you wire permissions to sub-agents >how you compress context when tasks run long >how background agents hand off work >which tool calls chain into what >it's like toyota leaking their entire production system manual to hyundai >the engine (model weights) stayed secret >but the production line (harness) is the actual moat and everyone just got a tour >oh and attackers now have a map of exactly where to poke >prompt injection? now they know the permission flow >tool call manipulation? now they see the execution order >not an instant exploit but a cheat code for finding one >tldr: AI competition shifted from "who has the smartest brain" to "who built the best operating system around the brain" >and anthropic just open sourced their OS by accident >long live open sauce(Onchain Wizard)