LaunchDevelopersOctober 5, 2026

Claude Code 2.1.290 adds hook telemetry and session-name commands

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Claude Code v2.1.290 adds serverToolUses to a mod's turn.step hook result, exposing the API-run tool calls (the advisor) with id, name, input, and start/end times. Plugin hooks gain agentId on tool.check so a hook can distinguish a subagent's permission check from the main session's.

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