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Sweep 12 Nov 2026 · 23:00Z Build v2.1.323 540 read Stable v2.1.311 Latest v2.1.323 Next v2.1.323 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.323 ·

Finishing an MCP sign-in from a pasted link now needs approval or /mcp

The tool that completes MCP sign-in from a callback link now asks first, and refuses pasted links when it cannot ask

You'll notice Improvements
JSON All of v2.1.323
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 v2.1.323,
ImprovementsSection of the release
What

Some MCP servers, connections that give Claude extra tools, need you to sign in. A tool lets Claude finish that sign-in from the callback link (the address the browser lands on afterwards). It used to run without asking. Now:

  • When prompts are avoided, as in dontAsk mode, or the session is not interactive, a pasted link is refused and you are told to run /mcp in the session's terminal and sign in there.
  • Otherwise Claude Code asks for permission, with No as the default and no option to always allow it.
  • The check that the link matches the sign-in that was started now happens before the tool runs.

The tool is controlled by a setting Claude Code receives from its server.

Why

Claude can no longer quietly finish a sign-in using a link it was given in the conversation.

Read from
Names in the bundle/mcp
Feature flag
tengu_cobalt_ferrule Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.323: off

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.323. It isn't a statement about your account. What a flag value here can and cannot tell you

How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeFixed /mcp and /plugins opening an MCP server's page with the cursor on "Disable" when the server needs authentication but still holds its…

See this entry in the whole of v2.1.323 →

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