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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.234 ·

claude mcp serve gains transport plumbing, still stdio only

The MCP serve command reads transport and port options internally, but stdio is the only choice offered.

Under the hood Nothing to try yet In Development
JSON All of v2.1.234
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
MCPArea: what it touches
In DevelopmentKind: in v2.1.234,
In DevelopmentSection of the release

Transport and port options are parsed and reported in telemetry, but only stdio is registered and reportable.

What

The MCP server command now reads transport and port options internally and reports the transport in its startup telemetry. The reported value is always stdio, and the command registers only -d, --debug and --verbose, so there is no way to pick another transport on this build.

Evidence

Start the Claude Code MCP server

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.234 →

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