Connect Codex to ZERNO MCP

Codex supports Streamable HTTP MCP. Add ZERNO as a remote server and the agent reads tasks directly from your backlog.

Add the MCP server

Use URL https://zerno.one/mcp and complete OAuth. In terminal:

codex mcp add zerno-remote --url https://zerno.one/mcp
codex mcp login zerno-remote --scopes mcp

In the Codex UI, choose Settings → MCP Servers → Add custom MCP, select Streamable HTTP, and leave custom headers empty.

Verify

Ask: "What's the next task in my ZERNO backlog?" Codex should call zerno_list_tasks.

Troubleshooting

If tools do not appear, restart Codex. If OAuth fails, run mcp login again.

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