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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.309 ·

New internal names, and some MCP servers now filtered out

Claude Code adds several new internal names, and a filter now leaves out some MCP servers it used to keep

Under the hood Internal Changes
JSON All of v2.1.309
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
InternalsArea: what it touches
Internal ChangesKind: in v2.1.309,
What probably matters to youSection of the release

Unclear Which MCP servers the filter now leaves out is not identified.

What

Claude Code adds several new names to its internal lists, among them cron_fire_texts, ccs_mods_dont_run_here, artifact_mcp_swap, api_reconnect and transcript_waiting_messages. Separately, a filter over MCP servers (outside programs that give Claude Code extra tools) now also leaves out some servers.

Why

Some MCP servers may not show up where they did before.

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 doubtWhich MCP servers the filter now leaves out is not identified.

See this entry in the whole of v2.1.309 →

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