FDRYMAF032: Published tool contract name is blank¶

Cause¶

An [AIFunctionName] or [AIParameterName] applied to an [AgentFunction] declares a null, empty, or whitespace-only name.

Rule Description¶

These MEAI attributes replace the C# method or parameter name in the contract exposed to the model. A blank name cannot identify a function or a JSON argument.

The reflection path rejects this while AIFunctionFactory.Create builds the function. Foundry's source-generated wrapper enforces the same contract when the generated provider resolves it, and this analyzer moves the failure to the declaration so both paths fail consistently and early.

How to Fix¶

Declare a non-blank published name, or remove the naming attribute to use the C# identifier.

Before¶

[AgentFunction]
[AIFunctionName("")]
public string Search(string query) => "...";

After¶

[AgentFunction]
[AIFunctionName("search")]
public string Search(string query) => "...";

The same rule applies to parameters:

public string Search(
    [AIParameterName("search_query")] string query) => "...";

When to Suppress¶

Do not suppress. The reflection path throws on the same declaration, and a source-generated function with no usable name cannot be called reliably.