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Challenge · intermediate · 30 min · Premium

Tool schemas that bite

Calder's agent called read_support_case with a case id that does not exist, got a neighbour's record back, and proposed a replacement for it. Tighten the schema and the adapter, and replay the case to a clarification instead.

Brief
Customer
Calder Equipment (synthetic customer from the Production AI Agents course; every trace and schema on this box is made up for the exercise)
Situation
Trace tr_02311: the customer wrote my pump, case C0l with a lowercase L. The model called read_support_case('C0l'), the adapter's schema accepted any string, the CRM's fuzzy lookup returned C01, and the agent proposed a replacement for a different customer's pump. The proposal reached the operator queue before anyone noticed.
Your role
You are the FDE who owns the tool contracts. You have the trace, the tool schema file (bound to the live adapter), the adapter's state table and the console. You can replay the recorded case.
Goal
Name the invented argument, make the schema refuse it, make the adapter return not_found rather than a neighbour, and replay the case to a clarification instead of a proposal.
Objectives
  1. 1.Name the argument the model invented (you commit to an answer)
  2. 2.Make the schema refuse anything that is not a case id
  3. 3.Make the adapter answer not_found instead of a neighbour
  4. 4.Replay the case to a clarification with no record touched
Mission workspace

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