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Joel Green
efbc910eb5
The browse server was dying between Bash tool invocations in Claude Code because: 1. SIGTERM: The Claude Code sandbox sends SIGTERM to all child processes when a Bash command completes. The server received this and called shutdown(), deleting the state file and exiting. 2. Parent watchdog: The server polls BROWSE_PARENT_PID every 15s. When the parent Bash shell exits (killed by sandbox), the watchdog detected it and called shutdown(). Both mechanisms made it impossible to use the browse tool across multiple Bash calls — every new `$B` invocation started a fresh server with no cookies, no page state, and no tabs. Fix: - SIGTERM handler: log and ignore instead of shutdown. Explicit shutdown is still available via the /stop command or SIGINT (Ctrl+C). - Parent watchdog: log once and continue instead of shutdown. The existing idle timeout (30 min) handles eventual cleanup. The /stop command and SIGINT still work for intentional shutdown. Windows behavior is unchanged (uses taskkill /F which bypasses signal handlers). Tested: browse server survives across 5+ separate Bash tool calls in Claude Code, maintaining cookies, page state, and navigation. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>