Codex CLI

Codex CLI reads MCP servers from ~/.codex/config.toml. Connecting to a remote server like Land Insights uses Codex’s newer HTTP client, which you turn on with one setting.

Add this to ~/.codex/config.toml:

experimental_use_rmcp_client = true

[mcp_servers.land_insights]
url = "https://mcp.landinsights.co"

Then sign in:

codex mcp login land_insights

This opens your browser to log in to Land Insights and approve access. There’s no API key, and you don’t need to register a client — Land Insights handles that automatically.

Remote MCP support in Codex is new and still changing. If experimental_use_rmcp_client isn’t recognized in your version, check the Codex MCP docs for the current setting name.

Now let’s run you through some examples to get you up and running. See what you can do →