From 21c6e7808cb0de403e77000d3f9a559f1c4414ca Mon Sep 17 00:00:00 2001
From: Huaaudio <jiahua.zhang@kuleuven.be>
Date: Sat, 21 Mar 2026 18:31:15 +0100
Subject: [PATCH] fix tool_call tts

---
 pkg/agent/loop.go               | 9 +++++++++
 pkg/bus/types.go                | 9 +++++----
 pkg/channels/discord/discord.go | 9 ++++++++-
 3 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/pkg/agent/loop.go b/pkg/agent/loop.go
index 54a2bfb96..4c44f2ea5 100644
--- a/pkg/agent/loop.go
+++ b/pkg/agent/loop.go
@@ -1379,6 +1379,9 @@ func (al *AgentLoop) runLLMIteration(
 						Channel: opts.Channel,
 						ChatID:  opts.ChatID,
 						Content: feedbackMsg,
+						Metadata: map[string]string{
+							"is_tool_call": "true",
+						},
 					})
 					fbCancel()
 				}
@@ -1397,6 +1400,9 @@ func (al *AgentLoop) runLLMIteration(
 							Channel: opts.Channel,
 							ChatID:  opts.ChatID,
 							Content: result.ForUser,
+							Metadata: map[string]string{
+								"is_tool_call": "true",
+							},
 						})
 					}
 
@@ -1447,6 +1453,9 @@ func (al *AgentLoop) runLLMIteration(
 					Channel: opts.Channel,
 					ChatID:  opts.ChatID,
 					Content: r.result.ForUser,
+					Metadata: map[string]string{
+						"is_tool_call": "true",
+					},
 				})
 				logger.DebugCF("agent", "Sent tool result to user",
 					map[string]any{
diff --git a/pkg/bus/types.go b/pkg/bus/types.go
index c648fb0ce..15aebc345 100644
--- a/pkg/bus/types.go
+++ b/pkg/bus/types.go
@@ -30,10 +30,11 @@ type InboundMessage struct {
 }
 
 type OutboundMessage struct {
-	Channel          string `json:"channel"`
-	ChatID           string `json:"chat_id"`
-	Content          string `json:"content"`
-	ReplyToMessageID string `json:"reply_to_message_id,omitempty"`
+	Channel          string            `json:"channel"`
+	ChatID           string            `json:"chat_id"`
+	Content          string            `json:"content"`
+	ReplyToMessageID string            `json:"reply_to_message_id,omitempty"`
+	Metadata         map[string]string `json:"metadata,omitempty"`
 }
 
 // MediaPart describes a single media attachment to send.
diff --git a/pkg/channels/discord/discord.go b/pkg/channels/discord/discord.go
index 2c7407171..cff8b7a16 100644
--- a/pkg/channels/discord/discord.go
+++ b/pkg/channels/discord/discord.go
@@ -154,7 +154,14 @@ func (c *DiscordChannel) Send(ctx context.Context, msg bus.OutboundMessage) erro
 		return nil
 	}
 
-	if c.tts != nil {
+	isToolCall := false
+	if msg.Metadata != nil {
+		if val, ok := msg.Metadata["is_tool_call"]; ok && val == "true" {
+			isToolCall = true
+		}
+	}
+
+	if c.tts != nil && !isToolCall {
 		if ch, err := c.session.State.Channel(channelID); err == nil && ch.GuildID != "" {
 			if vc, ok := c.session.VoiceConnections[ch.GuildID]; ok && vc != nil {
 				// Cancel any previous TTS playback