diff --git a/index.js b/index.js
index 212816f..6b1caed 100644
--- a/index.js
+++ b/index.js
@@ -142,7 +142,5 @@ function withMessageInterceptor(worker) {
 export {
   offload,
   handler,
-  createPooledCallback,
-  createBufferedCallback,
   OffloadError
 };
diff --git a/jsr.json b/jsr.json
index c41a005..305f5bf 100644
--- a/jsr.json
+++ b/jsr.json
@@ -1,5 +1,5 @@
 {
   "name": "@nesterow/offload",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "exports": "./mod.ts"
 }
diff --git a/offload.error.ts b/offload.error.ts
index 944df89..987b7e4 100644
--- a/offload.error.ts
+++ b/offload.error.ts
@@ -1,3 +1,6 @@
+/**
+ * OffloadError class
+ */
 export class OffloadError extends Error {
   constructor(message: string, options?: any) {
     super(message, options);
diff --git a/offload.handler.ts b/offload.handler.ts
index b5b4ccd..620db23 100644
--- a/offload.handler.ts
+++ b/offload.handler.ts
@@ -4,6 +4,9 @@ declare var self: Worker;
 
 type HandlerCallback<T, E> = ((data: E) => T) | ((data: E) => Awaited<T>);
 
+/**
+ * Handler wraps a callback function to be used as a worker handler
+ */
 export async function handler<T, E>(fn: HandlerCallback<T, E>): Promise<void> {
   self.addEventListener("message", async (event) => {
     const request = event.data as WorkerRequest<E>;
diff --git a/offload.interface.ts b/offload.interface.ts
index f08555f..4a83624 100644
--- a/offload.interface.ts
+++ b/offload.interface.ts
@@ -1,2 +1,8 @@
+/**
+ * Response from a worker
+ */
 export type WorkerResponse<T> = { id: number; value: T };
+/**
+ * Request to a worker
+ */
 export type WorkerRequest<T> = { id: number; params: T };
diff --git a/offload.ts b/offload.ts
index 0193abd..85486f2 100644
--- a/offload.ts
+++ b/offload.ts
@@ -82,7 +82,7 @@ function createTaskCallback<T, E>(
   return cb;
 }
 
-export function createBufferedCallback<T, E>(
+function createBufferedCallback<T, E>(
   bufSize: number,
   fun: () => TaskCallback<T, E>,
 ): [Callback<T, E>, Terminator] {
@@ -112,7 +112,7 @@ export function createBufferedCallback<T, E>(
   return [call, term];
 }
 
-export function createPooledCallback<T, E>(
+function createPooledCallback<T, E>(
   poolSize: number,
   fun: () => TaskCallback<T, E>,
 ): [Callback<T, E>, Terminator] {
diff --git a/package.json b/package.json
index bfe645a..f51ad8f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@nesterow/offload",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "author": {
     "name": "Anton Nesterov",
     "url": "https://github.com/nesterow"