Install K8gentS — Kubernetes RCA MCP Server in Codex

What you need first

• Codex, installed.
• Docker, which gives the docker command the server starts with.
• Your own value for YOUR_AI_API_KEY.

Steps

1. Run this in a terminal. It writes the server into ~/.codex/config.toml, which the Codex CLI, its IDE extension and the ChatGPT desktop app share.

codex mcp add k8gents --env AI_API_KEY=YOUR_AI_API_KEY -- docker run -i --rm -e AI_API_KEY docker.io/jdoornink/k8gents:0.1.1

2. Replace YOUR_AI_API_KEY with your own value.
3. Start Codex again and type /mcp: the server is listed.

Check it worked

Ask Codex: List the tools of k8gents.

If it does not start

Cannot connect to the Docker daemon

Docker is not running. Start it, then restart Codex.

The server starts, but its tools fail

A YOUR_… placeholder is still in the config, or its value is wrong.