CLAUDE_CODE_SYNC_PLUGINS_MCP_TIMEOUT_MS

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_SYNC_PLUGINS_MCP_TIMEOUT_MS is a Claude Code environment variable. Added between v2.1.143 and v2.1.212 and still present in v2.1.295. It is not in the official reference.

Status	Present in v2.1.295
Added	Added between v2.1.143 and v2.1.212
Category	Network and proxy
Official docs	Not listed

How to set it

For one session, export it in the shell that starts Claude Code:

export CLAUDE_CODE_SYNC_PLUGINS_MCP_TIMEOUT_MS=<value>
claude

To apply it to every session, add it to the env object of a settings file:

// ~/.claude/settings.json
{
  "env": {
    "CLAUDE_CODE_SYNC_PLUGINS_MCP_TIMEOUT_MS": "<value>"
  }
}

Related variables

CLAUDE_CODE_SYNC_PLUGINS_INSTALL_TIMEOUT_MS
CLAUDE_CODE_MCP_TOOL_IDLE_TIMEOUT
CLAUDE_CODE_SYNC_PLUGIN_INSTALL_TIMEOUT_MS: Timeout for synchronous plugin install.
CLAUDE_CODE_SYNC_SKILLS_INSTALL_TIMEOUT_MS
CLAUDE_CODE_SYNC_SKILLS_WAIT_TIMEOUT_MS
MCP_CONNECT_TIMEOUT_MS
MCP_TIMEOUT: MCP server connection timeout.
MCP_TOOL_TIMEOUT: Individual MCP tool execution timeout.

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_SYNC_PLUGINS_MCP_TIMEOUT_MS?

Added between v2.1.143 and v2.1.212 and still present in v2.1.295.

How do I set CLAUDE_CODE_SYNC_PLUGINS_MCP_TIMEOUT_MS?

Export it before starting Claude Code (export CLAUDE_CODE_SYNC_PLUGINS_MCP_TIMEOUT_MS=value), or add it to the "env" object in ~/.claude/settings.json to apply it to every session.

All variables, searchable: Claude Code environment variables.