Add the MCP server
From a terminal:
codex mcp add wikilayer --url https://wikilayer.org/mcp
codex mcp login wikilayer
The first command stores the Wikilayer endpoint. The second opens browser authorization; sign in to Wikilayer and approve access. codex mcp list then shows whether the server is connected.
What's next
Start a new Codex session and try the first steps. You can also install the Wikilayer skills for reviewing and translating wikis.