Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.267 ·

New MCP tool wrapper explicitly refuses cross-machine session-channel tools

Trying to call another machine's session-owned MCP tool locally now fails with a clear error instead of silently misbehaving

TierYou'll noticehow much it should matter to you
Useful2my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaMCPwhat it touches
KindBug Fixesin v2.1.267,
You'll notice

Trying to call another machine's session-owned MCP tool locally now fails with a clear error instead of silently misbehaving

What

When multiple machines are connected in a shared session and one machine owns a particular MCP tool (a tool exposed by a Model Context Protocol server), a new wrapper now catches attempts to run that tool from a different machine and throws a clear error explaining that the tool belongs to that other session and can't run locally.

Why

Previously such a call could fail silently or behave unpredictably; now the failure is explicit, making it obvious what went wrong instead of leaving the cause a mystery.

See this entry in the whole of v2.1.267 →