diff --git a/README.md b/README.md
index 6b4de39..099bd29 100644
--- a/README.md
+++ b/README.md
@@ -167,7 +167,7 @@ ghealth setup --instructions
 | `sedentary-period` | sedentary intervals | list, daily-rollup, reconcile |
 | `swim-lengths-data` | `swimStrokeType`, `strokeCount` *(use daily-rollup for `strokeCountSum`)* | list, rollup, daily-rollup, reconcile |
 | `hydration-log` | `milliliters` consumed | list, get, daily-rollup, reconcile |
-| `nutrition-log` | nutrients, `energy`, mealType, food | list, get, rollup, daily-rollup, reconcile |
+| `nutrition-log` | nutrients, `energy`, mealType, food | list, get, create, rollup, daily-rollup, reconcile |
 | `food` | nutrient profiles, servings *(catalog — no time filter)* | list, get |
 | `food-measurement-unit` | `displayName` *(catalog — no time filter)* | list, get |
 | `blood-glucose` | mg/dL, mealType, measurementTiming | list, get, rollup, daily-rollup, reconcile |
diff --git a/pkg/auth/auth.go b/pkg/auth/auth.go
index eb399cd..5bde21f 100644
--- a/pkg/auth/auth.go
+++ b/pkg/auth/auth.go
@@ -49,17 +49,17 @@ const ScopePrefix = "https://www.googleapis.com/auth/googlehealth."
 // AllScopes lists all available Health API OAuth scope suffixes.
 var AllScopes = []ScopeInfo{
 	{Suffix: "activity_and_fitness.readonly", Label: "Activity & Fitness (read)", Category: "activity_and_fitness"},
-	{Suffix: "activity_and_fitness", Label: "Activity & Fitness (read/write)", Category: "activity_and_fitness"},
+	{Suffix: "activity_and_fitness.writeonly", Label: "Activity & Fitness (write)", Category: "activity_and_fitness"},
 	{Suffix: "health_metrics_and_measurements.readonly", Label: "Health Metrics (read)", Category: "health_metrics_and_measurements"},
-	{Suffix: "health_metrics_and_measurements", Label: "Health Metrics (read/write)", Category: "health_metrics_and_measurements"},
+	{Suffix: "health_metrics_and_measurements.writeonly", Label: "Health Metrics (write)", Category: "health_metrics_and_measurements"},
 	{Suffix: "sleep.readonly", Label: "Sleep (read)", Category: "sleep"},
-	{Suffix: "sleep", Label: "Sleep (read/write)", Category: "sleep"},
+	{Suffix: "sleep.writeonly", Label: "Sleep (write)", Category: "sleep"},
 	{Suffix: "nutrition.readonly", Label: "Nutrition (read)", Category: "nutrition"},
-	{Suffix: "nutrition", Label: "Nutrition (read/write)", Category: "nutrition"},
+	{Suffix: "nutrition.writeonly", Label: "Nutrition (write)", Category: "nutrition"},
 	{Suffix: "profile.readonly", Label: "Profile (read)", Category: "profile"},
-	{Suffix: "profile", Label: "Profile (read/write)", Category: "profile"},
+	{Suffix: "profile.writeonly", Label: "Profile (write)", Category: "profile"},
 	{Suffix: "settings.readonly", Label: "Settings (read)", Category: "settings"},
-	{Suffix: "settings", Label: "Settings (read/write)", Category: "settings"},
+	{Suffix: "settings.writeonly", Label: "Settings (write)", Category: "settings"},
 	{Suffix: "location.readonly", Label: "Location (read)", Category: "location"},
 	{Suffix: "ecg.readonly", Label: "Electrocardiogram (read)", Category: "ecg"},
 	{Suffix: "irn.readonly", Label: "Irregular Rhythm Notifications (read)", Category: "irn"},
diff --git a/pkg/types/registry.go b/pkg/types/registry.go
index 189b5ca..86b53c5 100644
--- a/pkg/types/registry.go
+++ b/pkg/types/registry.go
@@ -509,7 +509,8 @@ func init() {
 		ID: "nutrition-log", FilterName: "nutrition_log", TimeField: interval,
 		Category:    "nutrition",
 		Description: "Logged food/nutrition entries with nutrient and energy breakdown",
-		Operations:  []string{"list", "get", "rollup", "daily-rollup", "reconcile"},
+		Operations:  []string{"list", "get", "create", "rollup", "daily-rollup", "reconcile"},
+		Writable:    true,
 	})
 	register(&DataType{
 		ID: "food", FilterName: "food", TimeField: TimeFieldNone,