The Claude Code Changelog
Claude Code v2.1.121: Instant MCP Tools and Tool-Output Hooks
April 29 · 8 min · Episode 16
0:00-8:14
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This episode digs into two major v2.1.121 changes in Claude Code: the alwaysLoad flag for loading selected MCP server tools at session start, and a widened PostToolUse hook that can rewrite outputs from built-in tools like bash and file reads. It also covers the practical tradeoffs around context, trust boundaries, and the release’s memory leak fixes.
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