Tool Schema Design — Naming, Descriptions, Parameter Constraints
A correct tool fails silently when the model cannot tell when to use it. Naming, descriptions, and parameter shapes drive 10 to 20 percentage-point swings in tool-selection accuracy on benchmarks like StableToolBench and MCPToolBench++. This lesson names the design rules that separate a tool a model picks reliably from a tool a model mis-fires.
Visual edition planned
This lesson isn’t interactive yet.
It is part of the curriculum and will get the same treatment as Phase 1 — a visual cover, hands-on labs, derivations with numeric checks and a quiz. Until then, the original lesson is the best place to read it:
Part of Phase 13 — Tools & Protocols. Use the previous / next cards below to keep browsing the phase.