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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.0.65 ·

MCP Tool Deferred Loading

Entry
JSON All of v2.0.65
EntryKind: in v2.0.65,
ChangesSection of the release

What: MCP tools can now be loaded on-demand to reduce initial token overhead. How to use:

  • Configure in settings; MCP tools marked for deferred loading won't count against initial token budget
  • Tools load when needed during conversation

Details:

  • New "MCP tools (deferred)" category shows in /context breakdown
  • Deferred tools excluded from main token total until used
  • Evidence: deferredToolTokens: H at line 380202, defer_loading property in fQ1() at line 457318

See this entry in the whole of v2.0.65 →

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