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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 v2.1.307 ·

Tool-server connections now identify themselves to the server

When Claude Code connects as a tool server, its connection now sends the header x-tunnel-peer: tool-server

Under the hood Internal Changes
JSON All of v2.1.307
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Remote ToolsArea: what it touches
Internal ChangesKind: in v2.1.307,
Internal ChangesSection of the release

Unclear It is not stated how the tool-server option is switched on.

What

When the tool-server option is set, the live connection Claude Code opens to the server now carries an extra header, x-tunnel-peer: tool-server. A header is a small piece of labelled information sent with a request. Before, the connection sent only the Authorization and x-session-id headers.

Why

The server can now tell tool-server connections apart from other connections.

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 stated how the tool-server option is switched on.

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