diff --git a/backend/pkg/server/docs/docs.go b/backend/pkg/server/docs/docs.go
index 40cc49e4..c8b1e29b 100644
--- a/backend/pkg/server/docs/docs.go
+++ b/backend/pkg/server/docs/docs.go
@@ -8592,7 +8592,6 @@ const docTemplate = `{
                 "status",
                 "title",
                 "tool_call_id_template",
-                "trace_id",
                 "user_id"
             ],
             "properties": {
@@ -8746,7 +8745,6 @@ const docTemplate = `{
                 "tasks",
                 "title",
                 "tool_call_id_template",
-                "trace_id",
                 "user_id"
             ],
             "properties": {
diff --git a/backend/pkg/server/docs/swagger.json b/backend/pkg/server/docs/swagger.json
index ea078cd2..bbd77b86 100644
--- a/backend/pkg/server/docs/swagger.json
+++ b/backend/pkg/server/docs/swagger.json
@@ -8584,7 +8584,6 @@
                 "status",
                 "title",
                 "tool_call_id_template",
-                "trace_id",
                 "user_id"
             ],
             "properties": {
@@ -8738,7 +8737,6 @@
                 "tasks",
                 "title",
                 "tool_call_id_template",
-                "trace_id",
                 "user_id"
             ],
             "properties": {
@@ -10642,4 +10640,4 @@
             "in": "header"
         }
     }
-}
\ No newline at end of file
+}
diff --git a/backend/pkg/server/docs/swagger.yaml b/backend/pkg/server/docs/swagger.yaml
index 78dee0bf..762edd91 100644
--- a/backend/pkg/server/docs/swagger.yaml
+++ b/backend/pkg/server/docs/swagger.yaml
@@ -664,7 +664,6 @@ definitions:
     - status
     - title
     - tool_call_id_template
-    - trace_id
     - user_id
     type: object
   models.FlowExecutionStats:
@@ -777,7 +776,6 @@ definitions:
     - tasks
     - title
     - tool_call_id_template
-    - trace_id
     - user_id
     type: object
   models.FlowUsageResponse:
diff --git a/backend/pkg/server/models/flows.go b/backend/pkg/server/models/flows.go
index b28052a4..ded458e1 100644
--- a/backend/pkg/server/models/flows.go
+++ b/backend/pkg/server/models/flows.go
@@ -56,7 +56,7 @@ type Flow struct {
 	Language           string           `form:"language" json:"language" validate:"max=70,required" gorm:"type:TEXT;NOT NULL"`
 	Functions          *tools.Functions `form:"functions,omitempty" json:"functions,omitempty" validate:"omitempty,valid" gorm:"type:JSON;NOT NULL;default:'{}'"`
 	ToolCallIDTemplate string           `form:"tool_call_id_template" json:"tool_call_id_template" validate:"max=70,required" gorm:"type:TEXT;NOT NULL"`
-	TraceID            *string          `form:"trace_id" json:"trace_id" validate:"max=70,required" gorm:"type:TEXT;NOT NULL"`
+	TraceID            *string          `form:"trace_id" json:"trace_id" validate:"omitempty,max=70" gorm:"type:TEXT"`
 	UserID             uint64           `form:"user_id" json:"user_id" validate:"min=0,numeric,required" gorm:"type:BIGINT;NOT NULL"`
 	CreatedAt          time.Time        `form:"created_at,omitempty" json:"created_at,omitempty" validate:"omitempty" gorm:"type:TIMESTAMPTZ;default:CURRENT_TIMESTAMP"`
 	UpdatedAt          time.Time        `form:"updated_at,omitempty" json:"updated_at,omitempty" validate:"omitempty" gorm:"type:TIMESTAMPTZ;default:CURRENT_TIMESTAMP"`
diff --git a/backend/pkg/server/models/flows_test.go b/backend/pkg/server/models/flows_test.go
index ace56c2e..d823b2b2 100644
--- a/backend/pkg/server/models/flows_test.go
+++ b/backend/pkg/server/models/flows_test.go
@@ -374,6 +374,21 @@ func TestFlowValid(t *testing.T) {
 		assert.NoError(t, validFlow.Valid())
 	})
 
+	t.Run("valid flow while trace id is pending", func(t *testing.T) {
+		t.Parallel()
+		f := validFlow
+		f.TraceID = nil
+		assert.NoError(t, f.Valid())
+	})
+
+	t.Run("trace id exceeds maximum length", func(t *testing.T) {
+		t.Parallel()
+		traceID := "trace-id-that-is-longer-than-the-supported-seventy-character-validation-limit-123"
+		f := validFlow
+		f.TraceID = &traceID
+		assert.Error(t, f.Valid())
+	})
+
 	t.Run("missing title", func(t *testing.T) {
 		t.Parallel()
 		f := validFlow
diff --git a/backend/pkg/server/services/flows_test.go b/backend/pkg/server/services/flows_test.go
new file mode 100644
index 00000000..4fd81c83
--- /dev/null
+++ b/backend/pkg/server/services/flows_test.go
@@ -0,0 +1,46 @@
+package services
+
+import (
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"pentagi/pkg/server/models"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetFlowsAllowsPendingTraceID(t *testing.T) {
+	db := setupFlowFileServiceTestDB(t)
+	require.NoError(t, db.Exec(`
+		INSERT INTO flows (
+			id, user_id, model, model_provider_name, model_provider_type,
+			tool_call_id_template, trace_id
+		) VALUES (1, 42, 'gpt', 'openai', 'openai', 'tcid', NULL)
+	`).Error)
+
+	c, w := newFlowFileTestContext(
+		http.MethodGet,
+		"/flows/?page=1&pageSize=5&type=init",
+		nil,
+		[]string{"flows.view"},
+		42,
+		0,
+	)
+
+	NewFlowService(db, nil, nil, nil).GetFlows(c)
+
+	require.Equal(t, http.StatusOK, w.Code)
+	var resp struct {
+		Status string `json:"status"`
+		Data   struct {
+			Flows []models.Flow `json:"flows"`
+			Total uint64        `json:"total"`
+		} `json:"data"`
+	}
+	require.NoError(t, json.Unmarshal(w.Body.Bytes(), &resp))
+	require.Equal(t, "success", resp.Status)
+	require.Equal(t, uint64(1), resp.Data.Total)
+	require.Len(t, resp.Data.Flows, 1)
+	require.Nil(t, resp.Data.Flows[0].TraceID)
+}