HazelJSAgent OS vs the ecosystem
Durable agents in your TypeScript backend — DNA packaging, crash-safe HITL, Skillgate, and local apply. Not Nest + LangGraph + workers.
Stay on Nest if AI is thin. Choose HazelJS Agent OS when agents need DNA, crash-safe HITL, Skillgate, and local apply — clone Meridian to see the full path.
vs NestJS
HazelJS vs NestJS
NestJS structures backends well. HazelJS Agent OS keeps familiar modules/DI and adds DNA packaging, crash-safe HITL, Skillgate, and local apply — clone Meridian to see it.
Read comparisonvs NestJS + LangChain
NestJS + LangChain vs HazelJS
Nest + LangChain works but creates two paradigms. HazelJS Agent OS unifies durable agents, DNA, Skillgate, and local apply in the same DI app as your APIs.
Read comparisonvs LangChain
HazelJS vs LangChain
LangChain composes LLM pipelines. HazelJS Agent OS runs those agents inside a production TypeScript backend — DNA, crash-safe HITL, Skillgate, local apply, same DI as your APIs.
Read comparisonvs LangGraph
HazelJS vs LangGraph
LangGraph is a strong agent graph runtime. HazelJS Agent OS covers durable AgentRun HITL, DNA packaging, Skillgate, local apply, and your API layer without a separate web framework.
Read comparisonvs Vercel AI SDK
HazelJS vs Vercel AI SDK
Vercel AI SDK optimizes streaming UX. HazelJS Agent OS is the backend for durable agents, DNA, Skillgate, and TypeScript APIs — they can complement each other.
Read comparisonvs Express
HazelJS vs Express
Express maximizes freedom with middleware. HazelJS Agent OS maximizes structure for durable TypeScript agents — DNA, HITL, Skillgate, and controllers included.
Read comparisonStart here after comparing
- Clone Meridian — DNA, Store, Skillgate, HITL, local apply
- Agent OS guide
- Skillgate guide
- Migrate a LangChain agent
- Migrate from NestJS