My self-hosted AI agents were slow, and I spent a while assuming the model was the problem. It wasn't. Most of every request was the agent describing its own tools to the model, over and over, for tools it never used. On 2026-08-15 I trimmed the tool schemas on five specialist agent profiles by 47%. The trim itself was a few lines of YAML. The part that cost me the most time was a duplicate key that made the change look applied while disabling nothing at all. Where the time was go...