Overview
Agent Substrate is a Kubernetes-layer system purpose-built for running AI agent workloads at scale. It multiplexes a large set of stateful "actors" (agents) onto a smaller pool of ready "workers" (Kubernetes Pods), leveraging the fact that agents are idle most of the time. It achieves 30x+ oversubscription with sub-second actor activation and full state persistence across hibernation cycles.
Key Features
- Actor-to-worker multiplexing with 30x+ oversubscription on Kubernetes
- Sub-second suspend/resume with full RAM and filesystem state persistence
- Framework-agnostic — works with ADK, LangChain, Claude Code, and any OCI container
- Sandboxed execution via gVisor for secure isolation
- MCP server deployment as durable Substrate Actors
Use Cases
- Running thousands of concurrent AI agents on minimal Kubernetes infrastructure
- High-density stateful coding environments (Claude Code, Codex) with session persistence
- Deploying sandboxed MCP tool servers as durable actors
- Cost-efficient agent infrastructure for production agentic applications
Technical Details
- Built on Kubernetes, bypasses control plane for low-latency scheduling
- Uses gVisor for kernel-level container isolation
- Compatible with Agent Executor (AX) for distributed agent runtime coordination
- Supports standard Kubernetes autoscaling alongside agent-specific scheduling