Conceptual Firefox DevTools MCP testing illustration with separate blank browser windows and a disconnected cable under a magnifying glass. Conceptual Firefox DevTools MCP testing illustration with separate blank browser windows and a disconnected cable under a magnifying glass.

Firefox DevTools MCP Testing: Separate Session Failures From App Bugs

A connection failure does not establish an app bug. Use our five-scenario Firefox DevTools MCP protocol, unexecuted 15-run ledger, diagnostic labels and issue-report worksheets to record the evidence before assigning blame.