diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index 78b70a9..49c6f93 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -9,15 +9,24 @@ jobs:
     name: 1. BUILD
     runs-on: ubuntu
     outputs:
-      message: ${{ steps.build.outputs.message }}
+      message: ${{ steps.execute.outputs.message }}
     steps:
     - name: Source Code checkout
       uses: actions/checkout@${{ vars.ACTION_CHECKOUT_VERSION }}
     - name: Build
       uses: ./
+      with:
+        oauth: ${{ secrets.CODEX_OAUTH }}
     - name: Execute
       id: execute
-      run: echo "do something..."
+      shell: bash
+      run: |
+        MESSAGE=$(codex exec "請你進行自我介紹" 2>/dev/null)
+        {
+          echo "message<<CODEX_EOF"
+          echo "$MESSAGE"
+          echo "CODEX_EOF"
+        } >> "$GITHUB_OUTPUT"
   test:
     name: 2. TEST
     runs-on: ubuntu
diff --git a/action.yml b/action.yml
index d4c2888..db9f8cf 100644
--- a/action.yml
+++ b/action.yml
@@ -15,7 +15,9 @@ runs:
   - name: Setup Codex
     env:
       CODEX_NON_INTERACTIVE: 1
-    run: curl -fsSL https://chatgpt.com/codex/install.sh | sh
+    run: |
+      curl -fsSL https://chatgpt.com/codex/install.sh | sh
+      echo "$HOME/.local/bin" >> "$GITHUB_PATH"
     shell: bash
   - name: Login Codex with OAuth
     env: