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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
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Claude Code v2.1.305 ·

Some HTTP MCP servers no longer have their tools listed at startup

Claude Code now skips listing tools and prompts up front for some plain HTTP MCP servers, as it already did for claude.ai proxy servers

You'll notice Improvements
JSON All of v2.1.305
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.305,
ImprovementsSection of the release

Unclear It is not clear which HTTP servers are affected or whether this is active for ordinary users.

What

MCP servers are outside programs that give Claude Code extra tools and prompts. When it connects to one, Claude Code can ask straight away for the full list of what the server offers, or put that off until later. It used to skip the up-front listing only for claude.ai proxy servers that said they had tools or prompts. It now also skips it for some servers that connect over plain HTTP, depending on checks of the server's address and settings.

Why

This changes which MCP servers have their tools and prompts fetched at startup, which could change how soon those tools appear.

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 which HTTP servers are affected or whether this is active for ordinary users.

See this entry in the whole of v2.1.305 →

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