FDRYMAF013: Agent function parameter is missing a description¶

Cause¶

A parameter on an [AgentFunction] method does not have a [System.ComponentModel.Description] attribute. CancellationToken parameters are exempt.

Why it matters¶

Parameter descriptions become part of the generated tool schema and tell the model what value to supply.

How to fix¶

Describe each model-supplied parameter.

[AgentFunction]
[Description("Searches the catalog.")]
public SearchResult Search(
    [Description("The product name or phrase to search for.")] string query) =>
    ...;