Connect Signado to Codex
Connecting Codex takes two terminal commands and one browser sign-in. You need a Signado account with a workspace. If you do not have one yet, create it at app.signado.io first.
Add the server
codex mcp add signado --url https://mcp.signado.io/mcp
Sign in
codex mcp login signado
Codex prints an authorization URL. Open it in your browser, sign in with your Signado login, pick your workspace if you have more than one, and click Allow. The terminal then confirms:
Successfully logged in to MCP server 'signado'.
Verify it works
codex mcp list
The signado row should show OAuth in the Auth column. Then start a Codex session and send a test prompt: "Call the ping tool of the signado MCP server with the message hello". You should get a success reply echoing your message back.
If the login stalls on an older Codex
Recent Codex versions (0.138 and later) work out of the box. On older versions, add this under the [mcp_servers.signado] section of ~/.codex/config.toml:
oauth_resource = "https://mcp.signado.io/mcp"
On very old versions, also add experimental_use_rmcp_client = true at the top of the file, above all [mcp_servers.*] sections. Then run the login command again.
Connected? Ask Codex for "my 10 newest warm leads from signado" and watch real leads come back.
Next: see what you can ask.