CLAUDE_CODE_CHROME_LATE_MCP_SERVER

Updated October 31, 2026 by Alex Sorokoletov

CLAUDE_CODE_CHROME_LATE_MCP_SERVER is a Claude Code environment variable: When true, loads the alternate late Claude-in-Chrome MCP server module and skips installing the Chrome native host early. Added in v2.1.311 and still present in v2.1.315. It is not in the official reference.

Status	Present in v2.1.315
Added	Added in v2.1.311
Category	MCP
Official docs	Not listed

How to set it

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

export CLAUDE_CODE_CHROME_LATE_MCP_SERVER=<value>
claude

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

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

Related variables

CLAUDE_IN_CHROME_MCP_SERVER_NAME
CLAUDE_CODE_CHROME_MCP_ORG_DENIED: When set, forces Claude-in-Chrome to be treated as denied by organization policy, with the cause reported as parent_org_policy.
CLAUDE_CODE_MCP_SERVER_NAME: Added in v2.1.85 to identify which MCP server a helper process was acting on behalf of.
CLAUDE_IN_CHROME_MANAGED_MCP_REFUSAL
CLAUDE_CODE_ARTIFACT_MCP: Enables MCP runtime-capability support for artifacts; on by default.
CLAUDE_CODE_DISABLE_MCP_TASK_BACKGROUND: Turns off automatic backgrounding of MCP tool tasks.
CLAUDE_CODE_ENABLE_REFRESH_MCP_TOOLS: Enables an on-demand MCP-tool refresh capability, grouped with CLAUDE_CODE_ENABLE_TASKS and CLAUDE_CODE_ENABLE_REMOTE_RECAP.
CLAUDE_CODE_HOST_GUARDS_ARTIFACTS_MCP: On a desktop host, the artifacts MCP entry is skipped unless this is set to true, which keeps that entry enabled.

Frequently asked questions

What does CLAUDE_CODE_CHROME_LATE_MCP_SERVER do?

When true, loads the alternate late Claude-in-Chrome MCP server module and skips installing the Chrome native host early.

Which Claude Code version has CLAUDE_CODE_CHROME_LATE_MCP_SERVER?

Added in v2.1.311 and still present in v2.1.315.

How do I set CLAUDE_CODE_CHROME_LATE_MCP_SERVER?

Export it before starting Claude Code (export CLAUDE_CODE_CHROME_LATE_MCP_SERVER=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.