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fix: generate simple {} schema for tools with no parameters (#425)

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Dale Seo 2025-09-08 02:40:02 -04:00 committed by GitHub
parent cb4abcb87b
commit b482cfc4bb
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2 changed files with 3 additions and 3 deletions
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4
crates/rmcp-macros/src/tool.rs
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@ -186,9 +186,9 @@ pub fn tool(attr: TokenStream, input: TokenStream) -> syn::Result<TokenStream> {
rmcp::handler::server::common::cached_schema_for_type::<#params_ty>()
})?
} else {
// if not found, use the default EmptyObject schema
// if not found, use a simple empty JSON object
syn::parse2::<Expr>(quote! {
rmcp::handler::server::common::cached_schema_for_type::<rmcp::model::EmptyObject>()
std::sync::Arc::new(serde_json::Map::new())
})?
}
};

2
crates/rmcp/tests/test_tool_macros.rs
View file

@ -110,7 +110,7 @@ async fn test_tool_macros() {
async fn test_tool_macros_with_empty_param() {
let _attr = Server::empty_param_tool_attr();
println!("{_attr:?}");
assert_eq!(_attr.input_schema.get("type").unwrap(), "object");
assert!(_attr.input_schema.get("type").is_none());
assert!(_attr.input_schema.get("properties").is_none());
}