diff --git a/src/output.rs b/src/output.rs
index 2513dad..4fe0a09 100644
--- a/src/output.rs
+++ b/src/output.rs
@@ -124,7 +124,12 @@ impl Output for TelegramOutput {
         // send tool call log as .md file if any
         if !self.tool_log.is_empty() {
             let md = self.tool_log.join("\n");
-            let tmp = format!("/tmp/noc_tools_{}.md", std::process::id());
+            // extract tool names for filename
+            let names: Vec<&str> = self.tool_log.iter()
+                .filter_map(|s| s.strip_prefix('[')?.split('(').next())
+                .collect();
+            let label = if names.is_empty() { "tools".to_string() } else { names.join("_") };
+            let tmp = format!("/tmp/{label}.md");
             if std::fs::write(&tmp, &md).is_ok() {
                 let input_file = InputFile::file(std::path::Path::new(&tmp));
                 let _ = self.bot.send_document(self.chat_id, input_file).await;
@@ -141,12 +146,27 @@ impl Output for TelegramOutput {
     }
 
     async fn send_file(&self, path: &Path, caption: &str) -> Result<bool> {
+        let ext = path.extension().and_then(|e| e.to_str()).unwrap_or("");
         let input_file = InputFile::file(path);
-        let mut req = self.bot.send_document(self.chat_id, input_file);
-        if !caption.is_empty() {
-            req = req.caption(caption);
+        match ext {
+            "ogg" | "oga" => {
+                self.bot.send_voice(self.chat_id, input_file).await?;
+            }
+            "wav" | "mp3" | "m4a" | "flac" => {
+                let mut req = self.bot.send_audio(self.chat_id, input_file);
+                if !caption.is_empty() {
+                    req = req.caption(caption);
+                }
+                req.await?;
+            }
+            _ => {
+                let mut req = self.bot.send_document(self.chat_id, input_file);
+                if !caption.is_empty() {
+                    req = req.caption(caption);
+                }
+                req.await?;
+            }
         }
-        req.await?;
         Ok(true)
     }
 }
diff --git a/src/stream.rs b/src/stream.rs
index 37543cf..ca54ead 100644
--- a/src/stream.rs
+++ b/src/stream.rs
@@ -193,14 +193,20 @@ pub async fn run_openai_with_tools(
 
             for tc in &tool_calls {
                 info!(tool = %tc.name, "executing tool call");
+                let args_preview = truncate_at_char_boundary(&tc.arguments, 200);
                 let _ = output
-                    .status(&format!("[{}({})]", tc.name, truncate_at_char_boundary(&tc.arguments, 100)))
+                    .status(&format!("### `{}`\n```json\n{args_preview}\n```", tc.name))
                     .await;
 
                 let result =
                     execute_tool(&tc.name, &tc.arguments, state, output, sid, config, chat_id)
                         .await;
 
+                let result_preview = truncate_at_char_boundary(&result, 500);
+                let _ = output
+                    .status(&format!("**Result** ({} bytes)\n```\n{result_preview}\n```\n---", result.len()))
+                    .await;
+
                 messages.push(serde_json::json!({
                     "role": "tool",
                     "tool_call_id": tc.id,
diff --git a/src/tools.rs b/src/tools.rs
index cf9dd16..7b5303a 100644
--- a/src/tools.rs
+++ b/src/tools.rs
@@ -583,6 +583,7 @@ pub async fn execute_tool(
         }
         "gen_voice" => {
             let text = args["text"].as_str().unwrap_or("");
+            info!("gen_voice text={:?} args={}", text, truncate_at_char_boundary(arguments, 200));
             if text.is_empty() {
                 return "Error: text is required".to_string();
             }
@@ -611,9 +612,13 @@ pub async fn execute_tool(
                 Ok(Ok(out)) => {
                     let stderr = String::from_utf8_lossy(&out.stderr);
                     let stdout = String::from_utf8_lossy(&out.stdout);
+                    warn!("gen_voice failed (exit={}): stdout={stdout} stderr={stderr}", out.status.code().unwrap_or(-1));
                     format!("gen_voice failed: {stdout} {stderr}")
                 }
-                Ok(Err(e)) => format!("gen_voice exec error: {e}"),
+                Ok(Err(e)) => {
+                    warn!("gen_voice exec error: {e}");
+                    format!("gen_voice exec error: {e}")
+                }
                 Err(_) => "gen_voice timeout (120s)".to_string(),
             }
         }