diff --git a/scripts/release/build-artifacts.ts b/scripts/release/build-artifacts.ts
index 576de69..ff071ff 100644
--- a/scripts/release/build-artifacts.ts
+++ b/scripts/release/build-artifacts.ts
@@ -3,6 +3,10 @@ import { $ } from "execa";
 import type { ReleaseOpts } from "./main";
 import { assertDirExists, PREFIX, uploadDirToReleases } from "./utils";
 
+function hasR2Credentials(): boolean {
+	return !!(process.env.R2_RELEASES_ACCESS_KEY_ID && process.env.R2_RELEASES_SECRET_ACCESS_KEY);
+}
+
 export async function buildJsArtifacts(opts: ReleaseOpts) {
 	await buildAndUploadTypescriptSdk(opts);
 }
@@ -30,6 +34,13 @@ async function buildAndUploadTypescriptSdk(opts: ReleaseOpts) {
 
 	await assertDirExists(sdkDistPath);
 
+	// Check if we have R2 credentials before attempting upload
+	if (!hasR2Credentials()) {
+		console.log(`⚠️ Skipping upload: R2_RELEASES_ACCESS_KEY_ID and R2_RELEASES_SECRET_ACCESS_KEY not set`);
+		console.log(`   Set these environment variables or configure GitHub secrets to enable uploads`);
+		return;
+	}
+
 	// Upload to commit directory
 	console.log(`Uploading TypeScript SDK to ${PREFIX}/${opts.commit}/typescript/`);
 	await uploadDirToReleases(sdkDistPath, `${PREFIX}/${opts.commit}/typescript/`);