Run this once in a terminal:
codex mcp add mana --url https://mcp.mana.scalarmind.com codex mcp login mana
The second command opens your browser for the sign-in and the confirmation page. Codex registers itself anew at each login, so a later login shows the confirmation page again; run it only when Codex reports the connection lost.
codex mcp list shows it. The mana_* tools appear from the next session.
Paste the prompt from Start here into a session. It tells the agent to read the standing instructions, which carry the rules your organization keeps.
The client signs you in through the browser once and shows one confirmation page with its name and the address it returns to. The token it holds renews itself. When the client says the connection was lost, connect it again; nothing in the store is lost.
Remove Mana undoes both the connection and anything the agent added to your instruction files.