See planning, tool use, memory, policy and evaluation as a controlled loop around the language model.
An agent is more than a prompt. Production agentic systems need explicit control over planning, tool authorization, state, retries, evaluation and termination conditions.
Tool access is a policy boundary, not a convenience feature.
Memory and state should be explicit architecture components.
Evaluation and stopping conditions prevent uncontrolled loops.
Goal
State + policy
Decide next step
External actions
Context + state
Check + stop
The diagram is intentionally architectural rather than vendor-specific. Use it as a mental model, then map the components to the actual environment.
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