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An agent demo in an afternoon. The real work turns out to live somewhere else.
What you'll have at the end
A written build-or-buy decision for your own agent task, backed by a scored six-factor table and the number that would flip it.
You need
A task you've already confirmed needs an agent rather than a fixed workflow, plus a rough list of the systems and data it would touch.
Not covered
Picking which named framework or platform to build or buy with, once you already know which path to take.
Pick workflow over agent for fixed steps
Confirms the task genuinely needs an agent before this build-or-buy question is even worth asking.
Decide between LangGraph, CrewAI, and a plain agent loop
The next question once you land on build: which framework actually runs the loop.
Work out your app's cost per request before you build the rest
Feeds a real per-request cost number into the budget-shape factor here.
Checked 15 Aug 2026
Part of the AI Engineering cookbook