Firefox DevTools MCP 0.10.2 released

Firefox Tooling Announcements
1

Firefox DevTools MCP (firefox-devtools-mcp) 0.10.2 is out on npm.

New tools:

  • press_key — sends a single key, optionally with modifiers, to a snapshot element or the focused element (Return, Escape, Tab, arrows, ctrl+shift+t, …).
  • type_text — types text key by key into the focused element, with an optional key to press afterwards.
  • set_network_cache — bypass or restore the HTTP cache, for the selected tab or browser-wide. Useful before a performance measurement or when verifying a change a cached asset would otherwise hide.

Other changes:

  • navigate_page and new_page take an optional wait argument (none, interactive, complete), so an agent can wait for the load event before deciding a page is done.
  • Windows: per-user Firefox installs are now detected, instead of failing with “unable to find binary in default location”.
  • aarch64 Linux: geckodriver is now resolved on all platforms, fixing “Unable to obtain browser driver” when a native geckodriver is on PATH.
  • Several Windows path fixes for --output-file, --log-file and saveTo.
  • New generated reference page documenting every tool and its parameters: docs/tools.md (firefox-devtools-mcp/docs/tools.md at main · mozilla/firefox-devtools-mcp · GitHub)

Install:

claude mcp add firefox-devtools npx @mozilla/firefox-devtools-mcp@latest

codex mcp add firefox-devtools – npx @mozilla/firefox-devtools-mcp@latest

For internal Firefox development, swap firefox-devtools-mcp with firefox-devtools-mcp-moz in order to benefit from additional tools, such as chrome-privileged script execution.

Special thanks to all the contributors who filed issues and submitted patches for this release: freema, f3tch (github), jasonanovak and shoemoney.

Full changelog: https://github.com/mozilla/firefox-devtools-mcp/releases/tag/v0.10.2
Repository and issues: GitHub - mozilla/firefox-devtools-mcp: Model Context Protocol server for Firefox DevTools - enables AI assistants to inspect and control Firefox browser through the Remote Debugging Protocol · GitHub
Public chatroom: https://chat.mozilla.org/#/room/#firefox-devtools-mcp:mozilla.org