527 field notes for people who ship.

Claude Code Aug–Sept 2026 Settings — 12 Worth Enabling Today

Twenty releases in three weeks buried a dozen settings that change how Claude Code behaves in production: output limits up to 128K characters, a restricted mode for untrusted repos, model-switch hooks, a live diff panel, per-agent prompt-cache TTLs and cache-miss diagnostics. We read the changelog from 2.1.238 to 2.1.261 so you do not have to. Here are the 12 worth enabling, with the exact JSON.