# Agent Runtimes and kagent

> How an agent runtime starts, stops, and isolates work on Kubernetes, including kagent and Agent Substrate.

- Canonical URL: https://webofmike.com/agent-runtimes/
- Author: Mike Moore (https://webofmike.com/about/)
- Published: 2026-10-28
- Last modified: 2026-10-28
- Tags: AI Agents, Kubernetes, Platform Engineering
- Cite as: Mike Moore, "Agent Runtimes and kagent", Web of Mike (webofmike.com), 2026-10-28. https://webofmike.com/agent-runtimes/


An agent runtime is the thing that starts, stops, and isolates an agent while it works. kagent puts that on Kubernetes.

These posts cover the harness, the substrate that packs many agents onto few nodes, and what breaks when isolation is shared. Identity for those agents is in [Agent Identity](/agent-identity/).