Agent Substrate
High-density secure sandbox runtime for idle-heavy agent workloads
AI Agents / Orchestration · Apache-2.0 · 5.5k
Reviewed 2026-09-20 · last push 2026-10-19 · repo checked 2026-10-19
What's Good
Apache-2.0 (agent-substrate/substrate). Purpose-built execution runtime for agent-like workloads: microVM and gVisor sandboxes, sub-500ms resume claims, zero-trust isolation, and Kubernetes-based worker lifecycle with agent-aware scheduling. It is infrastructure for running agents at scale, not another agent SDK.
The Catch
Vs AgentBox and Flue: Substrate is the dense sandbox/runtime control plane on Kubernetes, not a developer ADE and not a TypeScript harness framework. Ops cost is real — you need cluster competence. README notes it is not an officially supported Google product.
Verdict
Apache-2.0 agent sandbox runtime. Reach for dense suspend/resume isolation on K8s; bring cluster ops.
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