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Sweep 23 Oct 2026 · 21:48Z Build v2.1.310 529 read Stable v2.1.308 Latest v2.1.310 Next v2.1.310 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.310 ·

Plugin MCP servers that run locally now keep an earlier copy of their settings

For plugin MCP servers run as local programs, Claude Code now also keeps their settings as they were before the environment is filled in

Under the hood Internal Changes
JSON All of v2.1.310
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
PluginsArea: what it touches
Internal ChangesKind: in v2.1.310,
Internal ChangesSection of the release

Unclear It is not clear what the extra copy of the settings is used for or whether it changes anything a user sees.

What

Plugins can bring MCP servers, which are add-on services that give Claude extra tools. Some run as a local program on your machine (stdio servers). For these, Claude Code used to produce only the fully filled-in settings. It now also keeps a second copy taken before the server's environment variables are finalised. Plugin MCP servers reached over the network (SSE or HTTP) now go through an extra processing step when plugins are listed.

Why

You set up plugin MCP servers the same way as before. This changes how Claude Code handles their settings behind the scenes.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear what the extra copy of the settings is used for or whether it changes anything a user sees.

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