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
ImprovementsKind: in v2.1.286,
ImprovementsSection of the release
What
Some MCP servers (outside tool servers Claude Code connects to) require you to sign in through a web page. If Claude asks to start that sign-in again while an earlier one for the same server is still waiting, Claude Code now hands back the earlier link instead of starting a fresh sign-in. It does this only when all of these are unchanged and the earlier sign-in started recently:
the server's configuration
your account token
your signed-in identity
The reply explains that the link belongs to the sign-in that is already in progress, and tells you to run /mcp if the sign-in page showed an error. The sign-in can also now accept a callback address you paste in by hand.
Why
Previously every retry started a new sign-in and replaced the old one, so the link you had already opened could stop working partway through. Reusing it lets you finish the sign-in you started.
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 doubtHow recent the earlier sign-in must be for its link to be reused is not stated.
Anthropic's release notes agreeChanged list screens (/artifacts, /mcp, /skills, /hooks and others) to always line up each row's details in one column after the names
