CLAUDE LABJP
2.1.278 — The auto mode classifier now runs server-side by default on the Claude API, Enterprise, Bedrock, Vertex and Foundry. You are not billed for the classifier, and /status gained an Auto mode server lineTASKOUT — The TaskOutput tool is gone. taskOutputMaxChars and TASK_MAX_OUTPUT_LENGTH no longer do anything, and background output is read with Read instead10/07 — The old management-configuration key spellings are accepted until noon PT on October 7, seventeen days from now. After that, entries that still use them stop working until you rewrite themBUNPANIC — Reports are coming in of the newest build crashing on launch alone. Earlier builds still run on the same machine, which points at the release rather than the environmentNEW — Deciding what belongs in Cowork and what belongs in Claude Code, using the approval boundary as the lineSONNET4.5 — A date in a deprecation table is a floor, not an end date. Sonnet 4.5 is still active and no deprecation notice has been posted2.1.278 — The auto mode classifier now runs server-side by default on the Claude API, Enterprise, Bedrock, Vertex and Foundry. You are not billed for the classifier, and /status gained an Auto mode server lineTASKOUT — The TaskOutput tool is gone. taskOutputMaxChars and TASK_MAX_OUTPUT_LENGTH no longer do anything, and background output is read with Read instead10/07 — The old management-configuration key spellings are accepted until noon PT on October 7, seventeen days from now. After that, entries that still use them stop working until you rewrite themBUNPANIC — Reports are coming in of the newest build crashing on launch alone. Earlier builds still run on the same machine, which points at the release rather than the environmentNEW — Deciding what belongs in Cowork and what belongs in Claude Code, using the approval boundary as the lineSONNET4.5 — A date in a deprecation table is a floor, not an end date. Sonnet 4.5 is still active and no deprecation notice has been posted
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PreToolUse

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Claude Code/2026-08-07Advanced

The Write Your Permission Mode Never Stops — Auditing an Agent-Scoped PreToolUse Gate Across 150 Payloads

Workflow subagents auto-approve file edits regardless of your session permission mode. I measured the remaining boundary — an agent_id-scoped PreToolUse hook — across 150 payloads, found 54 silent pass-throughs, and rebuilt it to fail closed.

Claude Code/2026-06-12Intermediate

Stopping Claude Code Before It Runs a Destructive Command — a PreToolUse Screening Hook

How I wired a PreToolUse hook that screens every Bash command Claude Code is about to run: the settings.json setup, the Python screening script, what exit code 2 really does, and the false positives I tuned out over several weeks.