Devin Desktop 3.12.28 adds per-session MCP controls and restores rejected first prompts
Released Nov 7, the Agent Command Center session-header menu now lists that session's MCP servers so you can view, toggle, or re-authenticate them, and if a local agent rejects the first prompt, Desktop puts the text back in the composer with the reason. The editor also moves to VS Code 1.141.2 and Electron 43.8.3 (Chromium security fixes), and permission requests from third-party ACP agents no longer crash the conversation view.