Learn
A curriculum, not a chronological post list. Complete tracks in order when you can; jump via the roadmap if you already know the basics.
Agent Foundations
Beginner foundations on HazelJS: what agentic AI means, how AgentRuntime differs from chat and workflows, when not to use an agent, and the runtime mental model.
Foundation~135 minHazelJS
Agentic Development
Beginner end-to-end HazelJS course: scaffold Ops Desk, tool loop, budgets, context hygiene, HITL writes, golden tests, observability, CLI, and go-live checklist.
Foundation~245 minHazelJS
Context Engineering
Assemble prompts, RAG, and truncations in HazelJS so AgentRuntime sees signal—not noise.
Intermediate~50 minHazelJS
Tools, Skills, and MCP
Design tool contracts and choose direct @Tool, Skillgate, or MCP under Agent OS governance.
Intermediate~55 minHazelJS
Memory and State
Separate working context, @hazeljs/memory, RAG memory bridges, and durable AgentRun state.
Intermediate~50 minHazelJS
Evals and Reliability
Gate agent quality with @hazeljs/testing and @hazeljs/eval—golden tasks, forbidden tools, CI reporters.
Intermediate~45 minHazelJS
Observability and Cost
Inspect AgentRuns with getTimeline / Inspector and enforce RunBudget cost ceilings.
Intermediate~45 minHazelJS
Security and Governance
Combine guardrails, auth/tenant guards, CASL policies, and PolicyEngine for agent permission boundaries.
Advanced~55 minHazelJS
Durable Execution and HITL
Deepen durable AgentRun stores, leases, resume, and human approval without breaking the run model.
Advanced~50 minHazelJS
Orchestration and Multi-Agent
Compose AgentGraph, SupervisorAgent, @Delegate, pipeline, and @hazeljs/flow when paths are deterministic.
Advanced~60 minHazelJS
Deployment and Agent Operations
Run agents in workers/serverless-friendly shapes, operate with CLI doctor/logs/runs, and version DNA.
Advanced~45 minHazelJS
Agent OS Architecture
Map control plane, DNA, AgentRuntime, Skillgate/MCP, and durable kernel as one HazelJS operating model.
Advanced~50 minHazelJS