Bug Description

When using browser_vision tool on a WSL2 Linux environment, screenshots fail with the error:

Failed to save screenshot to /home/<user>/.hermes/cache/screenshots/<id>.png: 系统找不到指定的路径。 (os error 3)

Root Cause

Browserbase runs as a remote browser service. The screenshot path /home/<user>/.hermes/cache/screenshots/ is a WSL local path that Browserbase remote servers cannot access. Even when the directory exists locally, the remote browser process cannot write to it.

Expected Behavior

browser_vision should work on WSL2 environments using Browserbase remote browser.

Environment

• OS: WSL2 Ubuntu 24.04
• Hermes version: v0.10.0 (v2026.4.16)
• Browser tool: Browserbase remote backend
• Browser tool status: Connected and functional (navigation, clicking, scrolling all work)

Suggested Fix

Add a config option like browser.screenshot_dir to redirect screenshot output to a path accessible by Browserbase, or implement a workaround where screenshots are saved via a local agent-side mechanism rather than by the remote browser process.

Additional Context

• All other browser tools work fine (navigate, click, type, scroll, console)
• The issue only affects browser_vision which needs to save a screenshot file
• The remote Browserbase service has no access to the WSL filesystem path