diff --git a/src/action.ts b/src/action.ts
index 0d1d3bb..23c3031 100644
--- a/src/action.ts
+++ b/src/action.ts
@@ -17,7 +17,7 @@ import { Registry } from "./registry";
 import { writeBunfig } from "./bunfig";
 import { saveState } from "@actions/core";
 import { addExtension } from "./utils";
-import { DownloadMeta, getDownloadMeta } from "./download-url";
+import { getDownloadUrl } from "./download-url";
 import { cwd } from "node:process";
 
 export type Input = {
@@ -29,7 +29,7 @@ export type Input = {
   profile?: boolean;
   registries?: Registry[];
   noCache?: boolean;
-  token: string;
+  token?: string;
 };
 
 export type Output = {
@@ -51,8 +51,7 @@ export default async (options: Input): Promise<Output> => {
   const bunfigPath = join(cwd(), "bunfig.toml");
   writeBunfig(bunfigPath, options.registries);
 
-  const downloadMeta = await getDownloadMeta(options);
-  const url = downloadMeta.url;
+  const url = await getDownloadUrl(options);
 
   const cacheEnabled = isCacheEnabled(options);
 
@@ -110,7 +109,7 @@ export default async (options: Input): Promise<Output> => {
 
     if (!cacheHit) {
       info(`Downloading a new version of Bun: ${url}`);
-      revision = await downloadBun(downloadMeta, bunPath);
+      revision = await downloadBun(url, bunPath);
     }
   }
 
@@ -164,11 +163,11 @@ function isVersionMatch(
 }
 
 async function downloadBun(
-  downloadMeta: DownloadMeta,
+  url: string,
   bunPath: string,
 ): Promise<string | undefined> {
   // Workaround for https://github.com/oven-sh/setup-bun/issues/79 and https://github.com/actions/toolkit/issues/1179
-  const zipPath = addExtension(await downloadTool(downloadMeta.url), ".zip");
+  const zipPath = addExtension(await downloadTool(url), ".zip");
   const extractedZipPath = await extractZip(zipPath);
   const extractedBunPath = await extractBun(extractedZipPath);
   try {
diff --git a/src/download-url.ts b/src/download-url.ts
index a6cd39b..2800d45 100644
--- a/src/download-url.ts
+++ b/src/download-url.ts
@@ -2,28 +2,16 @@ import { compareVersions, satisfies, validate } from "compare-versions";
 import { Input } from "./action";
 import { getArchitecture, getPlatform, request } from "./utils";
 
-export interface DownloadMeta {
-  url: string;
-  auth?: string;
-}
-
-export async function getDownloadMeta(options: Input): Promise<DownloadMeta> {
+export async function getDownloadUrl(options: Input): Promise<string> {
   const { customUrl } = options;
   if (customUrl) {
-    return {
-      url: customUrl,
-    };
+    return customUrl;
   }
 
-  return await getSemverDownloadMeta(options);
+  return await getSemverDownloadUrl(options);
 }
 
-interface Run {
-  id: string;
-  head_sha: string;
-}
-
-async function getSemverDownloadMeta(options: Input): Promise<DownloadMeta> {
+async function getSemverDownloadUrl(options: Input): Promise<string> {
   const res = (await (
     await request("https://api.github.com/repos/oven-sh/bun/git/refs/tags", {
       headers: options.token
@@ -71,7 +59,5 @@ async function getSemverDownloadMeta(options: Input): Promise<DownloadMeta> {
     "https://github.com/oven-sh/bun/releases/download/",
   );
 
-  return {
-    url: href,
-  };
+  return href;
 }
diff --git a/src/utils.ts b/src/utils.ts
index ab11486..3f21f37 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -7,7 +7,15 @@ export async function request(
   url: string,
   init?: RequestInit,
 ): Promise<Response> {
-  const res = await fetch(url, init);
+  const headers = new Headers(init?.headers);
+  if (!headers.has("User-Agent")) {
+    headers.set("User-Agent", "@oven-sh/setup-bun");
+  }
+
+  const res = await fetch(url, {
+    ...init,
+    headers,
+  });
   if (!res.ok) {
     const body = await res.text().catch(() => "");
     throw new Error(