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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.319 ·

Some MCP servers now go through a preparation step before connecting

Some MCP servers now run a preparation step before connecting, and that time counts against their connection timeout

Under the hood Internal Changes
JSON All of v2.1.319
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.319,
Internal ChangesSection of the release

Unclear Which MCP server configurations get the preparation step is not stated.

What

MCP servers are outside programs that give Claude Code extra tools. Some MCP server configurations now go through a preparation step before Claude Code connects to them. The time this step takes is taken out of the server's connection timeout, which is how long Claude Code waits before giving up.

At startup these servers are handled as their own group. If the preparation step fails, that server is shown as a failed connection.

Why

For the affected servers, startup timing and the errors you see when a connection fails may be different.

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 server configurations get the preparation step is not stated.

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