impl Display for ToolUsage

own_mcp/src/mcp/chat.rs

@@ -9,6 +9,7 @@ use rmcp::ServiceError;
 use rmcp::model::{CallToolRequestParams, CallToolResult};
 use serde::Deserialize;
 use std::collections::HashMap;
+use std::fmt::Formatter;
 use thiserror::Error;
 
 #[derive(Debug, Copy, Clone, Default, Deserialize, PartialEq)]
@@ -111,6 +112,20 @@ pub struct ToolUsage {
     pub result: RestrictedToolCallResult,
 }
 
+impl std::fmt::Display for ToolUsage {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}(", self.call.function.name)?;
+
+        for (name, value) in self.call.function.arguments.as_object().expect("function.arguments is always an object").iter() {
+            write!(f, "{name}={value}, ")?;
+        }
+
+        write!(f, ") = {:?}", self.result)?;
+
+        Ok(())
+    }
+}
+
 impl AgentChat {
     pub async fn new(
         ollama_client: Ollama,