Define what done means
Tie the agent to a recurring decision or deliverable. Specify quality, latency, risk, owner, and the conditions that stop the run.
Engineer the system around the agent.
A prompt can produce an impressive answer once. Agentic engineering makes useful behavior repeatable by combining an explicit outcome, durable context, bounded tools, verification, and a handoff a human can own.
Four layers of a production agent
Make the rules durable
Keep product intent, examples, source hierarchy, and edge-case guidance in versioned files instead of relying on one conversation.
Bound the tools
Give the agent only the read, write, browser, or deployment capabilities the workflow requires, with approvals around irreversible steps.
Prove behavior and recover
Use test cases, live-surface checks, decision logs, monitoring, and a manual fallback so failure is visible and reversible.
A practical maturity path
Prompt
One person gets one useful output in chat.
Runbook
Instructions and examples make the result repeatable.
Workflow
Tools, approvals, tests, and logs support recurring work.
System
Owners monitor quality, cost, access, and change over time.
Choose a focused tool track
Start with the workflow you can observe.
Builder covers the complete system. Operator adds reviewed production-agent capstones. A Direct Call is the fastest way to turn one live problem into a scoped first build.