diff --git a/as/mod.ts b/as/mod.ts
index 0f46786..07bdeab 100644
--- a/as/mod.ts
+++ b/as/mod.ts
@@ -5,8 +5,12 @@ import { asReadonly, asUnreadonly } from "./readonly.ts";
  * Annotation collection for object predicate properties.
  */
 export const as = {
+  /** @inheritdoc */
   Optional: asOptional,
+  /** @inheritdoc */
   Readonly: asReadonly,
+  /** @inheritdoc */
   Unoptional: asUnoptional,
+  /** @inheritdoc */
   Unreadonly: asUnreadonly,
 };
diff --git a/is/mod.ts b/is/mod.ts
index f99ba41..528027a 100644
--- a/is/mod.ts
+++ b/is/mod.ts
@@ -40,6 +40,47 @@ import { isUnknown } from "./unknown.ts";
 
 /**
  * Type predicate function collection.
+ *
+ * @namespace
+ * @borrows module:unknownutil/is/any.isAny as Any
+ * @borrows {@link module:unknownutil/is/any.isArray} as Array
+ * @borrows isArrayOf as ArrayOf
+ * @borrows isAsyncFunction as AsyncFunction
+ * @borrows isBigint as Bigint
+ * @borrows isBoolean as Boolean
+ * @borrows isFunction as Function
+ * @borrows isInstanceOf as InstanceOf
+ * @borrows isIntersectionOf as IntersectionOf
+ * @borrows isLiteralOf as LiteralOf
+ * @borrows isLiteralOneOf as LiteralOneOf
+ * @borrows isMap as Map
+ * @borrows isMapOf as MapOf
+ * @borrows isNull as Null
+ * @borrows isNullish as Nullish
+ * @borrows isNumber as Number
+ * @borrows isObjectOf as ObjectOf
+ * @borrows isOmitOf as OmitOf
+ * @borrows isParametersOf as ParametersOf
+ * @borrows isPartialOf as PartialOf
+ * @borrows isPickOf as PickOf
+ * @borrows isPrimitive as Primitive
+ * @borrows isReadonlyOf as ReadonlyOf
+ * @borrows isRecord as Record
+ * @borrows isRecordObject as RecordObject
+ * @borrows isRecordObjectOf as RecordObjectOf
+ * @borrows isRecordOf as RecordOf
+ * @borrows isRequiredOf as RequiredOf
+ * @borrows isSet as Set
+ * @borrows isSetOf as SetOf
+ * @borrows isStrictOf as StrictOf
+ * @borrows isString as String
+ * @borrows isSymbol as Symbol
+ * @borrows isSyncFunction as SyncFunction
+ * @borrows isTupleOf as TupleOf
+ * @borrows isUndefined as Undefined
+ * @borrows isUniformTupleOf as UniformTupleOf
+ * @borrows isUnionOf as UnionOf
+ * @borrows isUnknown as Unknown
  */
 export const is = {
   Any: isAny,