diff --git a/harmony/harmonyparser_test.go b/harmony/harmonyparser_test.go
index b988a018f..2c8667bd4 100644
--- a/harmony/harmonyparser_test.go
+++ b/harmony/harmonyparser_test.go
@@ -1,8 +1,10 @@
 package harmony
 
 import (
+	"encoding/json"
 	"fmt"
 	"reflect"
+	"strings"
 	"testing"
 )
 
@@ -535,3 +537,224 @@ func TestFunctionConvertAndAdd(t *testing.T) {
 		})
 	}
 }
+
+func TestHarmonyMessageHandlerStreamingScenarios(t *testing.T) {
+	t.Run("thinking_then_content_streams", func(t *testing.T) {
+		handler := NewHarmonyMessageHandler()
+		handler.HarmonyParser.AddImplicitStart()
+		tp := handler.CreateToolParser()
+		type step struct {
+			in           string
+			wantContent  string
+			wantThinking string
+		}
+		steps := []step{
+			{in: "<|channel|>analysis<|message|>Thinking...", wantThinking: "Thinking..."},
+			{in: "<|end|>", wantThinking: ""},
+			{in: "<|start|>assistant<|message|>Answer", wantContent: "Answer"},
+			{in: "<|end|>", wantContent: ""},
+		}
+		for i, s := range steps {
+			content, thinking, tool := handler.AddContent(s.in, tp)
+			if tool != "" {
+				tp.Add(tool)
+			}
+			if content != s.wantContent || thinking != s.wantThinking {
+				t.Fatalf("step %d: got (content=%q thinking=%q), want (content=%q thinking=%q)", i, content, thinking, s.wantContent, s.wantThinking)
+			}
+		}
+	})
+
+	t.Run("content_streams_as_it_arrives", func(t *testing.T) {
+		handler := NewHarmonyMessageHandler()
+		handler.HarmonyParser.AddImplicitStart()
+		tp := handler.CreateToolParser()
+		inputs := []string{
+			"<|start|>assistant<|message|>Hello",
+			", world",
+			"!<|end|>",
+		}
+		var got []string
+		for _, in := range inputs {
+			content, thinking, tool := handler.AddContent(in, tp)
+			if tool != "" {
+				tp.Add(tool)
+			}
+			if thinking != "" {
+				t.Fatalf("unexpected thinking %q", thinking)
+			}
+			if content != "" {
+				got = append(got, content)
+			}
+		}
+		want := []string{"Hello", ", world", "!"}
+		if !reflect.DeepEqual(got, want) {
+			t.Fatalf("content pieces mismatch: got %v want %v", got, want)
+		}
+	})
+
+	t.Run("thinking_streams_separately_from_content", func(t *testing.T) {
+		handler := NewHarmonyMessageHandler()
+		handler.HarmonyParser.AddImplicitStart()
+		tp := handler.CreateToolParser()
+		inputs := []string{
+			"<|channel|>analysis<|message|>Thinking...",
+			"<|end|>",
+			"<|start|>assistant<|message|>Answer",
+			"<|end|>",
+		}
+		var got []string
+		for _, in := range inputs {
+			content, thinking, tool := handler.AddContent(in, tp)
+			if tool != "" {
+				tp.Add(tool)
+			}
+			if thinking != "" {
+				got = append(got, thinking)
+			}
+			if content != "" {
+				got = append(got, content)
+			}
+		}
+		want := []string{"Thinking...", "Answer"}
+		if !reflect.DeepEqual(got, want) {
+			t.Fatalf("content pieces mismatch: got %v want %v", got, want)
+		}
+	})
+
+	t.Run("partial_tags_buffer_until_complete", func(t *testing.T) {
+		handler := NewHarmonyMessageHandler()
+		handler.HarmonyParser.AddImplicitStart()
+		tp := handler.CreateToolParser()
+		inputs := []string{
+			"<|chan",
+			"nel|>analysis<|mess",
+			"age|>Deep ",
+			"thought",
+			"<|end|>",
+			"<|start|>assistant<|message|>Done",
+			"<|end|>",
+		}
+		var thinkingPieces []string
+		var contentPieces []string
+		for _, in := range inputs {
+			content, thinking, tool := handler.AddContent(in, tp)
+			if tool != "" {
+				tp.Add(tool)
+			}
+			if thinking != "" {
+				thinkingPieces = append(thinkingPieces, thinking)
+			}
+			if content != "" {
+				contentPieces = append(contentPieces, content)
+			}
+		}
+		if want := []string{"Deep ", "thought"}; !reflect.DeepEqual(thinkingPieces, want) {
+			t.Fatalf("thinking pieces mismatch: got %v want %v", thinkingPieces, want)
+		}
+		if want := []string{"Done"}; !reflect.DeepEqual(contentPieces, want) {
+			t.Fatalf("content pieces mismatch: got %v want %v", contentPieces, want)
+		}
+	})
+
+	t.Run("simple_assistant_after_analysis", func(t *testing.T) {
+		handler := NewHarmonyMessageHandler()
+		handler.HarmonyParser.AddImplicitStart()
+		tp := handler.CreateToolParser()
+		inputs := []string{
+			"<|channel|>analysis<|message|>Think",
+			"<|end|>",
+			"<|start|>assistant<|message|>Answer",
+			"<|end|>",
+		}
+		var contentSb, thinkingSb strings.Builder
+		for _, in := range inputs {
+			content, thinking, tool := handler.AddContent(in, tp)
+			if tool != "" {
+				tp.Add(tool)
+			}
+			contentSb.WriteString(content)
+			thinkingSb.WriteString(thinking)
+		}
+		if contentSb.String() != "Answer" {
+			t.Fatalf("content mismatch: got %q want %q", contentSb.String(), "Answer")
+		}
+		if thinkingSb.String() != "Think" {
+			t.Fatalf("thinking mismatch: got %q want %q", thinkingSb.String(), "Think")
+		}
+	})
+
+	t.Run("tool_call_parsed_and_returned_correctly", func(t *testing.T) {
+		handler := NewHarmonyMessageHandler()
+		handler.HarmonyParser.AddImplicitStart()
+		tp := handler.CreateToolParser()
+		inputs := []string{
+			"<|channel|>commentary to=functions.calculate<|message|>{\"expression\":\"2+2\"}<|end|>",
+		}
+		for _, in := range inputs {
+			content, thinking, tool := handler.AddContent(in, tp)
+			if content != "" || thinking != "" {
+				continue
+			}
+			if tool != "" {
+				tp.Add(tool)
+			}
+		}
+		name, args := tp.Drain()
+		if name == nil || *name != "functions.calculate" {
+			t.Fatalf("unexpected tool name: %v", name)
+		}
+		if got, want := args, "{\"expression\":\"2+2\"}"; got != want {
+			t.Fatalf("unexpected tool args: got %s want %s", got, want)
+		}
+	})
+
+	t.Run("tool_call_across_chunks", func(t *testing.T) {
+		handler := NewHarmonyMessageHandler()
+		handler.HarmonyParser.AddImplicitStart()
+		tp := handler.CreateToolParser()
+		inputs := []string{
+			"<|channel|>commentary to=functions.calculate<|message|>{\"expression\":\"2+",
+			"2\"}",
+			"<|end|>",
+		}
+		for _, in := range inputs {
+			content, thinking, tool := handler.AddContent(in, tp)
+			if content != "" || thinking != "" {
+				continue
+			}
+			if tool != "" {
+				tp.Add(tool)
+			}
+		}
+		name, args := tp.Drain()
+		if name == nil || *name != "functions.calculate" {
+			t.Fatalf("unexpected tool name: %v", name)
+		}
+		if got, want := args, "{\"expression\":\"2+2\"}"; got != want {
+			t.Fatalf("unexpected tool args: got %s want %s", got, want)
+		}
+	})
+}
+
+func TestFunctionNameMapJSONRoundTrip(t *testing.T) {
+	m := NewFunctionNameMap()
+	gotConverted := m.ConvertAndAdd("get weather")
+	if gotConverted == "" {
+		t.Fatal("conversion returned empty")
+	}
+	b, err := json.Marshal(m)
+	if err != nil {
+		t.Fatalf("marshal: %v", err)
+	}
+	var m2 FunctionNameMap
+	if err := json.Unmarshal(b, &m2); err != nil {
+		t.Fatalf("unmarshal: %v", err)
+	}
+	if m2.userToHarmony["get weather"] != gotConverted {
+		t.Fatalf("userToHarmony lost: got %q want %q", m2.userToHarmony["get weather"], gotConverted)
+	}
+	if m2.harmonyToUser[gotConverted] != "get weather" {
+		t.Fatalf("harmonyToUser lost: got %q want %q", m2.harmonyToUser[gotConverted], "get weather")
+	}
+}
diff --git a/server/routes_harmony_streaming_test.go b/server/routes_harmony_streaming_test.go
index b1ede4e39..bcb020886 100644
--- a/server/routes_harmony_streaming_test.go
+++ b/server/routes_harmony_streaming_test.go
@@ -7,7 +7,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"net/http"
 	"strings"
 	"testing"
 	"time"
@@ -118,7 +117,7 @@ func TestChatHarmonyParserStreamingRealtime(t *testing.T) {
 			name: "content streams as it arrives",
 			steps: []step{
 				{
-					input:       llm.CompletionResponse{Content: "<|message|>Hello", Done: false},
+					input:       llm.CompletionResponse{Content: "Hello", Done: false},
 					wantContent: "Hello",
 				},
 				{
@@ -126,7 +125,7 @@ func TestChatHarmonyParserStreamingRealtime(t *testing.T) {
 					wantContent: ", world",
 				},
 				{
-					input:       llm.CompletionResponse{Content: "!<|end|>", Done: true, DoneReason: llm.DoneReasonStop},
+					input:       llm.CompletionResponse{Content: "!", Done: true, DoneReason: llm.DoneReasonStop},
 					wantContent: "!",
 				},
 			},
@@ -135,20 +134,15 @@ func TestChatHarmonyParserStreamingRealtime(t *testing.T) {
 			name: "thinking streams separately from content",
 			steps: []step{
 				{
-					input:        llm.CompletionResponse{Content: "<|channel|>analysis<|message|>Thinking...", Done: false},
+					input:        llm.CompletionResponse{Thinking: "Thinking...", Done: false},
 					wantThinking: "Thinking...",
 				},
 				{
-					input: llm.CompletionResponse{Content: "<|end|>", Done: false},
-					// No output expected - just closes the analysis message and resets state to normal
+					input:       llm.CompletionResponse{Content: "Answer", Done: false},
+					wantContent: "Answer",
 				},
 				{
-					input:       llm.CompletionResponse{Content: "<|start|>assistant<|message|>Answer", Done: false},
-					wantContent: "Answer", // After message end, state is reset to normal
-				},
-				{
-					input: llm.CompletionResponse{Content: "<|end|>", Done: true, DoneReason: llm.DoneReasonStop},
-					// No output expected - just closes the assistant message
+					input: llm.CompletionResponse{Done: true, DoneReason: llm.DoneReasonStop},
 				},
 			},
 		},
@@ -156,24 +150,16 @@ func TestChatHarmonyParserStreamingRealtime(t *testing.T) {
 			name: "partial tags buffer until complete",
 			steps: []step{
 				{
-					input: llm.CompletionResponse{Content: "<|chan", Done: false},
-					// No output - partial tag
-				},
-				{
-					input: llm.CompletionResponse{Content: "nel|>analysis<|mess", Done: false},
-					// No output - still building tags
-				},
-				{
-					input:        llm.CompletionResponse{Content: "age|>Deep ", Done: false},
+					input:        llm.CompletionResponse{Thinking: "Deep ", Done: false},
 					wantThinking: "Deep ",
 				},
 				{
-					input:        llm.CompletionResponse{Content: "thought<|end|>", Done: false},
+					input:        llm.CompletionResponse{Thinking: "thought", Done: false},
 					wantThinking: "thought",
 				},
 				{
-					input:       llm.CompletionResponse{Content: "<|start|>assistant<|message|>Done<|end|>", Done: true, DoneReason: llm.DoneReasonStop},
-					wantContent: "Done", // After message end, state is reset to normal
+					input:       llm.CompletionResponse{Content: "Done", Done: true, DoneReason: llm.DoneReasonStop},
+					wantContent: "Done",
 				},
 			},
 		},
@@ -181,7 +167,7 @@ func TestChatHarmonyParserStreamingRealtime(t *testing.T) {
 			name: "simple assistant after analysis",
 			steps: []step{
 				{
-					input:        llm.CompletionResponse{Content: "<|channel|>analysis<|message|>Think<|end|><|start|>assistant<|message|>Answer<|end|>", Done: true, DoneReason: llm.DoneReasonStop},
+					input:        llm.CompletionResponse{Thinking: "Think", Content: "Answer", Done: true, DoneReason: llm.DoneReasonStop},
 					wantContent:  "Answer",
 					wantThinking: "Think",
 				},
@@ -191,7 +177,7 @@ func TestChatHarmonyParserStreamingRealtime(t *testing.T) {
 			name: "tool call parsed and returned correctly",
 			steps: []step{
 				{
-					input:       llm.CompletionResponse{Content: "<|channel|>commentary to=functions.get_weather<|message|>{\"location\":\"San Francisco\"}<|end|><|start|>assistant<|message|>The weather is sunny<|end|>", Done: true, DoneReason: llm.DoneReasonStop},
+					input:       llm.CompletionResponse{Content: "The weather is sunny", ToolCalls: []api.ToolCall{{Function: api.ToolCallFunction{Name: "get_weather", Arguments: api.ToolCallFunctionArguments{"location": "San Francisco"}}}}, Done: true, DoneReason: llm.DoneReasonStop},
 					wantContent: "The weather is sunny",
 					wantToolCalls: []api.ToolCall{
 						{
@@ -210,15 +196,10 @@ func TestChatHarmonyParserStreamingRealtime(t *testing.T) {
 			name: "tool call with streaming JSON across chunks",
 			steps: []step{
 				{
-					input: llm.CompletionResponse{Content: "<|channel|>commentary to=functions.calculate<|message|>{\"expr", Done: false},
-					// No output yet - incomplete JSON
+					input: llm.CompletionResponse{Done: false},
 				},
 				{
-					input: llm.CompletionResponse{Content: "ession\":\"2+", Done: false},
-					// Still no output - incomplete JSON
-				},
-				{
-					input: llm.CompletionResponse{Content: "2\"}", Done: true},
+					input: llm.CompletionResponse{ToolCalls: []api.ToolCall{{Function: api.ToolCallFunction{Name: "calculate", Arguments: api.ToolCallFunctionArguments{"expression": "2+2"}}}}, Done: true},
 					wantToolCalls: []api.ToolCall{
 						{
 							Function: api.ToolCallFunction{
@@ -400,9 +381,9 @@ func TestChatHarmonyParserStreamingSimple(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 
 	mockResponses := []llm.CompletionResponse{
-		{Content: "<|message|>First ", Done: false},
+		{Content: "First ", Done: false},
 		{Content: "chunk ", Done: false},
-		{Content: "here<|end|>", Done: true, DoneReason: llm.DoneReasonStop},
+		{Content: "here", Done: true, DoneReason: llm.DoneReasonStop},
 	}
 
 	mock := mockRunner{
@@ -507,189 +488,3 @@ func TestChatHarmonyParserStreamingSimple(t *testing.T) {
 		t.Errorf("expected at least 2 content chunks for streaming, got %d", contentChunks)
 	}
 }
-
-func TestChatHarmonyParserStreaming(t *testing.T) {
-	gin.SetMode(gin.TestMode)
-
-	type expectedChunk struct {
-		afterResponse int    // Which mock response this chunk should appear after
-		content       string // Expected content in this chunk
-		thinking      string // Expected thinking in this chunk
-	}
-
-	testCases := []struct {
-		name           string
-		mockResponses  []llm.CompletionResponse
-		expectedChunks []expectedChunk
-		wantContent    string
-		wantThinking   string
-	}{
-		{
-			name: "simple message without thinking",
-			mockResponses: []llm.CompletionResponse{
-				{Content: "<|start|>assistant<|message|>Hello, ", Done: false},
-				{Content: "how can I help?", Done: false},
-				{Content: "<|end|>", Done: true, DoneReason: llm.DoneReasonStop},
-			},
-			expectedChunks: []expectedChunk{
-				{afterResponse: 1, content: "Hello, "},
-				{afterResponse: 2, content: "how can I help?"},
-			},
-			wantContent: "Hello, how can I help?",
-		},
-		{
-			name: "message with analysis channel for thinking",
-			mockResponses: []llm.CompletionResponse{
-				{Content: "<|channel|>analysis<|message|>", Done: false},
-				{Content: "Let me think ", Done: false},
-				{Content: "about this problem...", Done: false},
-				{Content: "<|end|>", Done: false},
-				{Content: "<|start|>assistant<|message|>", Done: false},
-				{Content: "The answer ", Done: false},
-				{Content: "is 42", Done: false},
-				{Content: "<|end|>", Done: true, DoneReason: llm.DoneReasonStop},
-			},
-			expectedChunks: []expectedChunk{
-				{afterResponse: 2, thinking: "Let me think "},
-				{afterResponse: 3, thinking: "about this problem..."},
-				{afterResponse: 6, content: "The answer "},
-				{afterResponse: 7, content: "is 42"},
-			},
-			wantContent:  "The answer is 42",
-			wantThinking: "Let me think about this problem...",
-		},
-		{
-			name: "streaming with partial tags across boundaries",
-			mockResponses: []llm.CompletionResponse{
-				{Content: "<|chan", Done: false},
-				{Content: "nel|>analy", Done: false},
-				{Content: "sis<|mess", Done: false},
-				{Content: "age|>Think", Done: false},
-				{Content: "ing deeply...<|end|>", Done: false},
-				{Content: "<|start|>assi", Done: false},
-				{Content: "stant<|message|>Result ", Done: false},
-				{Content: "computed<|e", Done: false},
-				{Content: "nd|>", Done: true, DoneReason: llm.DoneReasonStop},
-			},
-			expectedChunks: []expectedChunk{
-				{afterResponse: 4, thinking: "Think"},
-				{afterResponse: 5, thinking: "ing deeply..."},
-				{afterResponse: 7, content: "Result "},
-				{afterResponse: 8, content: "computed"},
-			},
-			wantContent:  "Result computed",
-			wantThinking: "Thinking deeply...",
-		},
-	}
-
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			// Channel to synchronize mock responses with chunk verification
-			responsesSent := make(chan int, len(tc.mockResponses))
-
-			mock := mockRunner{
-				CompletionFn: func(ctx context.Context, r llm.CompletionRequest, fn func(llm.CompletionResponse)) error {
-					// Send mock responses one at a time, notifying when each is sent
-					for i, resp := range tc.mockResponses {
-						fn(resp)
-						responsesSent <- i + 1
-					}
-					close(responsesSent)
-					return nil
-				},
-			}
-
-			s := Server{
-				sched: &Scheduler{
-					pendingReqCh:  make(chan *LlmRequest, 1),
-					finishedReqCh: make(chan *LlmRequest, 1),
-					expiredCh:     make(chan *runnerRef, 1),
-					unloadedCh:    make(chan any, 1),
-					loaded:        make(map[string]*runnerRef),
-					newServerFn:   newMockServer(&mock),
-					getGpuFn:      discover.GetGPUInfo,
-					getCpuFn:      discover.GetCPUInfo,
-					reschedDelay:  250 * time.Millisecond,
-					loadFn: func(req *LlmRequest, _ *ggml.GGML, _ discover.GpuInfoList, _ bool) bool {
-						req.successCh <- &runnerRef{
-							llama: &mock,
-						}
-						return false
-					},
-				},
-			}
-
-			go s.sched.Run(t.Context())
-
-			// Create a minimal model
-			_, digest := createHarmonyTestModel(t)
-
-			// Create model with passthrough template
-			stream := false
-			w := createRequest(t, s.CreateHandler, api.CreateRequest{
-				Model:    "harmony-test",
-				Files:    map[string]string{"file.gguf": digest},
-				Template: `<|start|><|end|>{{ with .Tools }}{{ end }}{{ .Prompt }}`,
-				Stream:   &stream,
-			})
-
-			if w.Code != http.StatusOK {
-				t.Fatalf("failed to create model: %d", w.Code)
-			}
-
-			// Test chat endpoint with streaming
-			streamTrue := true
-			w = createRequest(t, s.ChatHandler, api.ChatRequest{
-				Model:    "harmony-test",
-				Messages: []api.Message{{Role: "user", Content: "Hello"}},
-				Stream:   &streamTrue,
-				Tools:    getTestTools(),
-			})
-
-			if w.Code != http.StatusOK {
-				t.Fatalf("chat request failed: %d - %s", w.Code, w.Body.String())
-			}
-
-			// Parse streaming response
-			var chunks []api.ChatResponse
-			var content, thinking strings.Builder
-
-			decoder := json.NewDecoder(w.Body)
-			for decoder.More() {
-				var chunk api.ChatResponse
-				if err := decoder.Decode(&chunk); err != nil {
-					t.Fatalf("failed to decode chunk: %v", err)
-				}
-				chunks = append(chunks, chunk)
-
-				// Accumulate content and thinking from each chunk
-				content.WriteString(chunk.Message.Content)
-				thinking.WriteString(chunk.Message.Thinking)
-
-				// Debug output
-				t.Logf("Chunk %d: content=%q thinking=%q done=%v", len(chunks), chunk.Message.Content, chunk.Message.Thinking, chunk.Done)
-			}
-
-			// Verify we got streaming chunks
-			if len(chunks) == 0 {
-				t.Fatal("expected streaming chunks, got none")
-			}
-
-			gotContent := content.String()
-			gotThinking := thinking.String()
-
-			if gotContent != tc.wantContent {
-				t.Errorf("content mismatch: got %q, want %q", gotContent, tc.wantContent)
-			}
-			if gotThinking != tc.wantThinking {
-				t.Errorf("thinking mismatch: got %q, want %q", gotThinking, tc.wantThinking)
-			}
-
-			// Verify last chunk has done=true
-			lastChunk := chunks[len(chunks)-1]
-			if !lastChunk.Done {
-				t.Error("expected last chunk to have done=true")
-			}
-		})
-	}
-}