Tag client name and version

Author: jboolean

contrib/mark3labs/mcp-go/mcpgo.go

@@ -80,6 +80,11 @@ func newHooks() *hooks {
 
 func (h *hooks) onBeforeInitialize(ctx context.Context, id any, request *mcp.InitializeRequest) {
 	taskSpan, _ := llmobs.StartTaskSpan(ctx, "mcp.initialize", llmobs.WithIntegration("mark3labs/mcp-go"))
+
+	clientName := request.Params.ClientInfo.Name
+	clientVersion := request.Params.ClientInfo.Version
+	taskSpan.Annotate(llmobs.WithAnnotatedTags(map[string]string{"client_name": clientName, "client_version": clientName + "_" + clientVersion}))
+
 	h.spanCache.Store(id, taskSpan)
 }
 

contrib/mark3labs/mcp-go/mcpgo_test.go

@@ -76,6 +76,9 @@ func TestIntegrationSessionInitialize(t *testing.T) {
 	assert.Equal(t, "mcp.initialize", taskSpan.Name)
 	assert.Equal(t, "task", taskSpan.Meta["span.kind"])
 
+	assert.Contains(t, taskSpan.Tags, "client_name:test-client")
+	assert.Contains(t, taskSpan.Tags, "client_version:test-client_1.0.0")
+
 	assert.Contains(t, taskSpan.Meta, "input")
 	assert.Contains(t, taskSpan.Meta, "output")