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Sweep 03 Nov 2026 · 22:27Z Build v2.1.318 536 read Stable v2.1.311 Latest v2.1.318 Next v2.1.318 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.317 ·

Plugin MCP server copies are now re-checked

Claude Code now re-checks the MCP server copies that plugins provide, and loads a session owner from saved transcripts

Group of 2 Under the hood Internal Changes
JSON All of v2.1.317
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
PluginsArea: what it touches
Internal ChangesKind: in v2.1.317,
Internal ChangesSection of the release

What

Plugins are add-ons that extend Claude Code. Some of them provide MCP servers, which connect Claude Code to outside tools. Claude Code keeps copies of these servers.

  • Copy re-check: a new step re-checks these plugin copies and applies any differences under the reason plugin_copy_recheck. If the re-check fails, Claude Code logs "plugin copy re-check failed, its copies wait for the next plugin diff" and deals with them on the next plugin update.
  • Wider scope: a difference can now be scoped to a set of copies, and plugin candidates are passed into the step that brings servers back in line.
  • Session owner: separately, a sessionOwner field (sessionOwners for several) is now loaded from transcripts when a full conversation log is loaded.

Why

In practice, MCP servers provided by plugins are checked again outside the usual update moment. A failed check is not fatal, because the copies are simply handled at the next plugin update.

See this entry in the whole of v2.1.317 →

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