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 .
Start here
- What Is a Cloud-Native Agent Harness? (kagent) When a desktop coding harness stops fitting: what a cloud-native agent harness is, and how kagent splits harness, template, instance and sandbox on Kubernetes.
- kagent Agent Substrate: Thousands of Agents kagent Agent Substrate is built to run thousands of AI agents on tens of pods. I stood it up on kind: snapshot restores, autoscaling, and every gotcha I hit.
- Agent Runtimes Have an Autoscaler, Not a Scheduler Agent runtimes optimize for density and reject when full. That is not scheduling. Three failure modes at capacity, and who gets to call an agent critical.
Every post in this hub
- How AI Agents Sharing a Sandbox Leak Each Other's Data
A finance AI agent leaked bank balances into company Slack by sharing compute with another agent. Reproduced in Docker, then fixed with separate sandboxes. - What Is a Cloud-Native Agent Harness? (kagent)
When a desktop coding harness stops fitting: what a cloud-native agent harness is, and how kagent splits harness, template, instance and sandbox on Kubernetes. - Agent Runtimes Have an Autoscaler, Not a Scheduler
Agent runtimes optimize for density and reject when full. That is not scheduling. Three failure modes at capacity, and who gets to call an agent critical. - Regression Tests for kagent Agents with agentevals
kagent records agent sessions as ADK events. agentevals scores chat-message trajectories. I built the bridge, and a suite that catches an ungrounded agent. - kagent v1.0: Claude Code Harness on Kubernetes
kagent v1.0.0-alpha1 swaps its agent API for AgentInstance: checkpoint and fork a conversation, resume from a golden snapshot, run Claude Code as the harness. - Substrate Scope: a Live Visualizer for Agent Substrate
Substrate Scope is an open source live visualizer for Agent Substrate: worker bays, restore queues, snapshot storage, telemetry, and per-agent activity. - Revenant: A Gateway-Native, Always-On Agent Runtime
Revenant is an always-on agent runtime in Rust where an AI gateway owns every key, budget, and failover, and a hard liveness rule means no turn goes silent. - kagent Agent Substrate: Thousands of Agents
kagent Agent Substrate is built to run thousands of AI agents on tens of pods. I stood it up on kind: snapshot restores, autoscaling, and every gotcha I hit.