Tool design scenarios — CCA-F Exam Prep

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L3.06|Tool design scenarios
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Domain 2 — Tool design

Tools are how agents interact with the world. Design them wrong and everything breaks.

Domain 2 is 18% of the CCA-F. The core skill: given a real-world system, design the tool interface that an agent will use. Names, parameters, descriptions, error handling.

You'll design 4 tool schemas in this lesson:

TOOL 1
Payment processing — charge, refund, check status
TOOL 2
Search — query, filter, paginate
TOOL 3
Email sending — compose, attach, send
TOOL 4
Database query — read, filter, aggregate