diff --git a/internal/output/lark_errors.go b/internal/output/lark_errors.go
index a2ac2590e..418acf15a 100644
--- a/internal/output/lark_errors.go
+++ b/internal/output/lark_errors.go
@@ -39,6 +39,10 @@ const (
 	LarkErrDriveCrossTenantUnit    = 1064510 // cross tenant and unit not support
 	LarkErrDriveCrossBrand         = 1064511 // cross brand not support
 
+	// Wiki write-path lock contention (e.g. concurrent wiki +node-create under the
+	// same parent). Server-side write lock; transient, safe to retry with backoff.
+	LarkErrWikiLockContention = 131009
+
 	// Sheets float image: width/height/offset out of range or invalid.
 	LarkErrSheetsFloatImageInvalidDims = 1310246
 
@@ -83,6 +87,8 @@ func ClassifyLarkError(code int, msg string) (int, string, string) {
 	// drive-specific constraints that benefit from actionable hints
 	case LarkErrDriveResourceContention:
 		return ExitAPI, "conflict", "please retry later and avoid concurrent duplicate requests"
+	case LarkErrWikiLockContention:
+		return ExitAPI, "conflict", "wiki write lock contention on this parent node; retry with exponential backoff or serialize sibling-node writes"
 	case LarkErrDriveCrossTenantUnit:
 		return ExitAPI, "cross_tenant_unit", "operate on source and target within the same tenant and region/unit"
 	case LarkErrDriveCrossBrand:
diff --git a/internal/output/lark_errors_test.go b/internal/output/lark_errors_test.go
index a9af905c5..ae540d39b 100644
--- a/internal/output/lark_errors_test.go
+++ b/internal/output/lark_errors_test.go
@@ -90,3 +90,24 @@ func TestClassifyLarkError_DriveCreateShortcutConstraints(t *testing.T) {
 		})
 	}
 }
+
+// TestClassifyLarkError_WikiLockContention verifies the wiki write-lock
+// contention error (131009) maps to an actionable retry hint instead of
+// a generic "api_error". Surfaces during concurrent wiki +node-create
+// against the same parent (see larksuite/cli#1012).
+func TestClassifyLarkError_WikiLockContention(t *testing.T) {
+	t.Parallel()
+	gotExitCode, gotType, gotHint := ClassifyLarkError(LarkErrWikiLockContention, "raw msg")
+	if gotExitCode != ExitAPI {
+		t.Fatalf("exitCode=%d, want %d", gotExitCode, ExitAPI)
+	}
+	if gotType != "conflict" {
+		t.Fatalf("type=%q, want %q", gotType, "conflict")
+	}
+	if !strings.Contains(gotHint, "wiki write lock") {
+		t.Fatalf("hint=%q, want substring %q", gotHint, "wiki write lock")
+	}
+	if !strings.Contains(gotHint, "backoff") {
+		t.Fatalf("hint=%q, want substring %q", gotHint, "backoff")
+	}
+}