Meridian 1.58.1

August 12, 2026

Change what an AI assistant is allowed to do, without disconnecting it and starting over.

Fixed

• Change an assistant’s permissions without starting over — the MCP Clients screen listed what each app was allowed to do but gave you no way to change it. Granting one extra permission meant revoking the app entirely and re-approving every permission from scratch. Each app now has an Edit button that opens its permissions with the current ones already ticked, so you can add or remove one and save.
• Newly added permissions are no longer out of reach — an app was stuck with whatever you approved the first time, so anything Meridian added later simply could not be granted to it. The permissions screen now also tells you how many are still ungranted, instead of leaving an assistant to report an unexplained “permission denied”.
• Revoking moved somewhere safer — it used to be a one-click button sitting in the list beside each app, with nothing next to it to say what it would do. It now lives inside that app’s permissions screen, behind a confirmation.