Claude Code v2.1.248 · 27 Aug 2026
Peer address row in the info panel
The info panel can show a Peer address row, unavailable unless CLAUDE_CODE_MESSAGING_SOCKET is set.
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All of v2.1.248
Use it now Tier: how much it should matter to you
3 Useful: my rating, 1 to 5
3 Signal: worth watching, 1 to 5
Cross-Session Messaging Area: what it touches
Improvements Kind: in v2.1.248, 27 Aug 26
What probably matters to you Section of the release
What
The diagnostics info panel can now show a "Peer address" row. When messaging is enabled but the CLAUDE_CODE_MESSAGING_SOCKET environment variable is not set, the row reads unavailable followed by the reason.
Evidence
unavailable \u2014
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
See this entry in the whole of v2.1.248 →
27 Aug 2026 · 876 entries, this one is #131.
Use it now64 You'll notice420 Nothing to try yet95 Under the hood297
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Names in this entry
env CLAUDE_CODE_MESSAGING_SOCKET Set by Claude Code, not by you: in sessions that bind an inbox socket , Claude Code exports that socket's path to hooks and Bash commands when it binds the socket. In a session that starts with messaging on, Claude Code binds the socket before any hook runs. Other sessions on the machine deliver messages to this path. Each session exports its own socket rather than one inherited from a parent, and messages arriving on it go through the session's inbound controls . Settings env blocks can't set it. Requires Claude Code v2.1.224 or later
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Hard to understand Too vague Looks wrong Not relevant to me Too long Missing the detail I wanted Duplicate of another card
Clear Learned something new I can act on this Good catch
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.
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In v2.1.248 What probably matters to you release-page order
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Per-server timeouts for SDK-hosted MCP servers
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