diff --git a/.github/workflows/create-releases.yml b/.github/workflows/create-releases.yml
index 2358cc58..9c01ff8f 100644
--- a/.github/workflows/create-releases.yml
+++ b/.github/workflows/create-releases.yml
@@ -36,7 +36,8 @@ jobs:
       - name: Publish to NPM
         if: ${{ steps.release.outputs.releases_created }}
         run: |
-          yarn tsn scripts/publish-packages.ts '${{ toJSON(steps.release.outputs) }}'
+          yarn tsn scripts/publish-packages.ts
 
         env:
+          DATA: ${{ toJSON(steps.release.outputs) }}
           NPM_TOKEN: ${{ secrets.ANTHROPIC_NPM_TOKEN || secrets.NPM_TOKEN }}
diff --git a/scripts/publish-packages.ts b/scripts/publish-packages.ts
index 94c2f25f..50e93fef 100644
--- a/scripts/publish-packages.ts
+++ b/scripts/publish-packages.ts
@@ -44,15 +44,16 @@ import { execSync } from 'child_process';
 import path from 'path';
 
 function main() {
-  if (!process.argv[2]) {
+  const data = process.argv[2] ?? process.env['DATA'];
+  if (!data) {
     throw new Error(`Usage: publish-packages.ts '{"json": "obj"}'`);
   }
 
   const rootDir = path.join(__dirname, '..');
   console.log('root dir', rootDir);
-  console.log(`publish-packages called with ${process.argv[2]}`);
+  console.log(`publish-packages called with ${data}`);
 
-  const outputs = JSON.parse(process.argv[2]);
+  const outputs = JSON.parse(data);
 
   const rawPaths = outputs.paths_released;