CCAR-F domain 2 · 18% of the exam · 12 of 65 questions
Tool Design and MCP Integration
Eighteen per cent of the paper, and the domain where the answer is nearly always about what the model can see. A tool exists for Claude as a name, a description and a schema, so most failures traced in these items are failures of that surface rather than of the code behind it. The domain covers designing that interface, reporting failures in a form an agent can act on, deciding which tools an agent gets and whether it is forced to call one, when an MCP server is worth the trouble, and what the built-in tools actually do.
every one of the 36 pool items in this domain · explanations as you go · free
The 5 objectives in this domain
A real score report grades each of these separately, so a weakness here is addressable at this level rather than by re-reading the whole domain. Each one has its own drill.
The other 4 domains
Drilling one domain tells you about one domain. A full-length timed mock in blueprint proportions is what produces a score you can read.
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