You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
Bug FixesKind: in v2.1.287,
Bug FixesSection of the release
What
An MCP server is an outside program that gives Claude Code extra tools. Claude Code can keep a saved copy of what a server offered on an earlier connection and reuse it when it connects again. If that saved copy is rejected after the connection is made, Claude Code closes the connection. Before, it closed it straight away. Now it closes only once no tool call (a single request to use one of the server's tools) and no background task is still using it. The next connection then asks the server directly what it offers.
Why
Tool calls that were already running on that server are no longer cut off just because the saved listing turned out to be out of date.
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 exactly which calls and tasks are counted as still using the connection.
