Feat: parse func call from or

llm.go

@@ -468,6 +468,19 @@ func (or OpenRouterChat) ParseChunk(data []byte) (*models.TextChunk, error) {
 	resp := &models.TextChunk{
 		Chunk: llmchunk.Choices[len(llmchunk.Choices)-1].Delta.Content,
 	}
+
+	// Handle tool calls similar to OpenAIer
+	if len(llmchunk.Choices[len(llmchunk.Choices)-1].Delta.ToolCalls) > 0 {
+		resp.ToolChunk = llmchunk.Choices[len(llmchunk.Choices)-1].Delta.ToolCalls[0].Function.Arguments
+		fname := llmchunk.Choices[len(llmchunk.Choices)-1].Delta.ToolCalls[0].Function.Name
+		if fname != "" {
+			resp.FuncName = fname
+		}
+	}
+	if resp.ToolChunk != "" {
+		resp.ToolResp = true
+	}
+
 	if llmchunk.Choices[len(llmchunk.Choices)-1].FinishReason == "stop" {
 		if resp.Chunk != "" {
 			logger.Error("text inside of finish llmchunk", "chunk", llmchunk)

models/openrouter.go

@@ -61,6 +61,7 @@ type OpenRouterChatRespNonStream struct {
 			Content   string          `json:"content"`
 			Refusal   any             `json:"refusal"`
 			Reasoning any             `json:"reasoning"`
+			ToolCalls []ToolDeltaResp `json:"tool_calls"`
 		} `json:"message"`
 	} `json:"choices"`
 	Usage struct {
@@ -81,6 +82,7 @@ type OpenRouterChatResp struct {
 		Delta struct {
 			Role      string          `json:"role"`
 			Content   string          `json:"content"`
+			ToolCalls []ToolDeltaResp `json:"tool_calls"`
 		} `json:"delta"`
 		FinishReason       string `json:"finish_reason"`
 		NativeFinishReason string `json:"native_finish_reason"`