OSS
Agent Substrate Puts Idle Agents on Kubernetes Behind gVisor, Multiplexing Many Actors Onto Few Workers
agent-substrate/substrate is a Go system on Kubernetes that maps a large set of 'actors' (agents) onto a smaller set of ready 'workers', betting on the fact that agent workloads sit idle most of the time. It manages standard OCI containers at the kernel level via gVisor, so it is harness-agnostic, with native support for ADK actor identity and persistent working memory, LangChain stateful agents, and sandboxed MCP servers as actors. It carries a 1,525-star count and a blunt disclaimer that it is in very early development and not an officially supported Google product.
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