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Claude Code v2.1.271 ·

MCP connector prewait now overridable via CLAUDE_CODE_MCP_CONNECTOR_PREWAIT_MS

New CLAUDE_CODE_MCP_CONNECTOR_PREWAIT_MS environment variable overrides how long Claude Code waits for remote MCP servers to start

TierUse it nowhow much it should matter to you
Useful3my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaMCPwhat it touches
KindNew Featuresin v2.1.271,
Use it now Notable No documentation found

New CLAUDE_CODE_MCP_CONNECTOR_PREWAIT_MS environment variable overrides how long Claude Code waits for remote MCP servers to start

What

Claude Code can connect to MCP servers (external tool providers using the Model Context Protocol). Before starting a session, it may wait briefly for remote MCP servers to become ready. That wait behavior is now controlled by a new environment variable, CLAUDE_CODE_MCP_CONNECTOR_PREWAIT_MS, which can set an explicit deadline and a local-only override. This replaces a simpler check that only looked at whether CLAUDE_CODE_ENVIRONMENT_KIND was set to "bridge".

Why

This gives more direct control over MCP startup timing than the previous environment-kind check allowed, which is useful for tuning how long Claude Code waits on remote MCP servers before a session begins.

Read from
Names in the bundleCLAUDE_CODE_MCP_CONNECTOR_PREWAIT_MS
How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: CLAUDE_CODE_MCP_CONNECTOR_PREWAIT_MS

See this entry in the whole of v2.1.271 →