The sdk should clean up mcp servers it launches on exit

[connorosborn-sf]

    options = ClaudeAgentOptions(
        mcp_servers={
            "chrome-devtools": {
                "type": "stdio",
                "command": "npx",
                "args": [
                    "-y",
                    "chrome-devtools-mcp@latest",
                    "--isolated"
                ]
            }
        },
    )

I'm seeing that any prompt which launches a browser, will leave that browser open.

[connorosborn-sf]

See ChromeDevTools/chrome-devtools-mcp#484

[jerbob92]

I have the same issue.

The odd thing is that it does seem to stop the MCP partially, the command npx chrome-devtools-mcp@latest does go away, but the child process chrome-devtools-mcp and chrome itself stay around.

Also, when I don't use chrome tools, the cleanup does work correctly. Did you ever find a fix for this?

[jerbob92]

@connorosborn-sf I figured out that if you don't execute through npx, then it does shut down "properly". It still leaves some [chrome] <defunct> and [chrome_crashpad] <defunct> processes, but the browser itself is gone.

[anishesg]

Opened a fix for this in #869 — terminates the full process group (not just the direct child) on shutdown, so orphaned MCP servers and their subprocesses get cleaned up. Uses start_new_session on POSIX with a Windows fallback.