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Sweep 10 Nov 2026 · 02:18Z Build v2.1.322 539 read Stable v2.1.311 Latest v2.1.322 Next v2.1.322 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.275 ·

New internal repl_mcp_needs_auth event kind added, but unused

A new repl_mcp_needs_auth message kind exists internally but currently renders no content and nothing creates it

Group of 2 Nothing to try yet No documentation found In Development
JSON All of v2.1.275
Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
In DevelopmentKind: in v2.1.275,
In DevelopmentSection of the release

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What

A new event/message kind called repl_mcp_needs_auth was added internally alongside existing kinds like max_turns_reached and poll_events. It appears in the enumerations/state-key lists used for these message kinds, and in the renderer map that turns message kinds into visible content, repl_mcp_needs_auth is wired to a handler that always returns an empty array, meaning it produces no visible content.

Why

Nothing in the current code actually constructs a message of this kind, so this has no visible effect yet. It looks like groundwork for a future feature (likely related to an MCP server, a way of connecting external tools, needing authentication) that has not been wired up to actually fire.

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Names in the bundlerepl_mcp_needs_auth
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