diff --git a/packages/sanity/src/core/preview/createPathObserver.ts b/packages/sanity/src/core/preview/createPathObserver.ts
index d80994071beb..3400973382a3 100644
--- a/packages/sanity/src/core/preview/createPathObserver.ts
+++ b/packages/sanity/src/core/preview/createPathObserver.ts
@@ -122,8 +122,9 @@ function normalizePaths(path: (FieldName | PreviewPath)[]): PreviewPath[] {
 /**
  * Creates a function that allows observing nested paths on a document.
  * If the path includes a reference, the reference will be "followed", allowing for selecting paths within the referenced document.
- * @param options - Options - Requires a function that can observe fields on a document
- * */
+ * @param options - Requires a function that can observe fields on a document
+ * @internal
+ */
 export function createPathObserver(options: {observeFields: ObserveFieldsFn}) {
   const {observeFields} = options
 
diff --git a/packages/sanity/src/core/preview/createPreviewObserver.ts b/packages/sanity/src/core/preview/createPreviewObserver.ts
index 759ac48de7a6..49b294f961ce 100644
--- a/packages/sanity/src/core/preview/createPreviewObserver.ts
+++ b/packages/sanity/src/core/preview/createPreviewObserver.ts
@@ -28,7 +28,10 @@ function isReference(value: unknown): value is {_ref: string} {
   return isPlainObject(value)
 }
 
-// Takes a value and its type and prepares a snapshot for it that can be passed to a preview component
+/**
+ * Takes a value and its type and prepares a snapshot for it that can be passed to a preview component
+ * @internal
+ */
 export function createPreviewObserver(context: {
   observeDocumentTypeFromId: ObserveDocumentTypeFromIdFn
   observePaths: ObservePathsFn
diff --git a/packages/sanity/src/core/preview/observeFields.ts b/packages/sanity/src/core/preview/observeFields.ts
index 0ba71ead31ed..91c99bcf816c 100644
--- a/packages/sanity/src/core/preview/observeFields.ts
+++ b/packages/sanity/src/core/preview/observeFields.ts
@@ -50,6 +50,7 @@ type Cache = {
  * Creates a function that allows observing individual fields on a document.
  * It will automatically debounce and batch requests, and maintain an in-memory cache of the latest field values
  * @param options - Options to use when creating the observer
+ * @internal
  */
 export function createObserveFields(options: {
   client: SanityClient