●2.1.283 — No Claude Code release over the weekend; 2.1.283 from September 25 is still the latest. Its new auto-mode default deserves a check against your allow rules●PLANS — Pro and Team Standard now default to Opus instead of Sonnet, a change shipped in Claude Code 2.1.280 that shifts how you compare plans●10/07 — Nine days left until the old spellings of the Claude Desktop / Cowork managed config keys stop being accepted; after that they fail closed●AUTO — Users are asking why commands covered by allow rules get rejected in auto mode. The fix is shaping the invoked command to match the rule●NEW — The week Opus 5.5 became the default: three places an alias was still pointing at the old model●CURSOR — Cursor credits burn in proportion to model cost, so routing Claude through Cursor gets expensive fast. Above ~50 requests a day, flat-rate Claude Code Pro is the steadier choice●2.1.283 — No Claude Code release over the weekend; 2.1.283 from September 25 is still the latest. Its new auto-mode default deserves a check against your allow rules●PLANS — Pro and Team Standard now default to Opus instead of Sonnet, a change shipped in Claude Code 2.1.280 that shifts how you compare plans●10/07 — Nine days left until the old spellings of the Claude Desktop / Cowork managed config keys stop being accepted; after that they fail closed●AUTO — Users are asking why commands covered by allow rules get rejected in auto mode. The fix is shaping the invoked command to match the rule●NEW — The week Opus 5.5 became the default: three places an alias was still pointing at the old model●CURSOR — Cursor credits burn in proportion to model cost, so routing Claude through Cursor gets expensive fast. Above ~50 requests a day, flat-rate Claude Code Pro is the steadier choice

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structured output

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Claude API² Agent SDK¹ autonomous operations¹ production¹ tool use¹ JSON Schema¹ reliability¹

⬡ API & SDK/2026-06-16Advanced

Keep a Decision Rationale Ledger for Autonomous Agents — So You Can Explain 'Why' Later

When an autonomous agent takes hard-to-reverse actions like a production deploy or a bulk delete, capture the chosen option, rejected alternatives, and assumptions in a structured ledger. Includes structured output, an append-only log, and tiering by impact.

⬡ API & SDK/2026-06-16Advanced

Trusting Claude's Structured Output in Production — Validation Gates and Repair Loops

When Claude's structured output breaks 'occasionally' in production, combine tool-use enforcement, a schema validation gate, a single repair loop, and a graceful degradation fallback to eliminate broken JSON from your operations — with working TypeScript code.