A builder open-sourced an 883-commit, 8-month agent harness after abandoning it as overengineered

r/ClaudeAI (51 upvotes, 61 comments)·medium signalXBlueskyLinkedInCopy link

The author spent eight months and billions of tokens on two 20x Claude accounts building a harness where the LLM is a replaceable worker and the system owns planning, state, permissions, context, verification and evidence, then kept adding code graphs, RAG, deterministic orchestration, isolated workers, crash recovery, model routing, replayable runs and self-improvement experiments until they were spending more time extending it than using it. They released it MIT and explicitly warn readers off the agents.md and claude.md files in the repo as stale. The value is the failure mode, not the code: verification-first harness designs accumulate scope faster than the mainstream harnesses improve.