01What problem it solves
Agents that wait on humans or long tools must survive process restarts. The durable kernel composition persists runs, leases work, and resumes approvals.
02Read next
Durable AI agents (commercial intent) and Agent OS Gamma.
New: Decision Runtime — closed-set judgments for Agent OS. Read the guide →
HazelJSDurable Kernel
Durable Kernel is HazelJS architecture language for AgentRuntime + DurableRunStore + DurableJobStore + crash-safe HITL. There is no DurableKernel class or npm package — do not look for one.