diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
new file mode 100644
index 0000000..6522906
--- /dev/null
+++ b/.github/workflows/cd.yml
@@ -0,0 +1,41 @@
+name: CD
+
+on:
+  push:
+    tags: ["v*"]
+
+jobs:
+  build-mcpb:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+      - run: npm ci
+        working-directory: mcp-server
+      - run: npx mcpb pack
+        working-directory: mcp-server
+      - uses: actions/upload-artifact@v4
+        with:
+          name: mcpb
+          path: mcp-server/*.mcpb
+
+  release:
+    runs-on: ubuntu-latest
+    needs: build-mcpb
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: mcpb
+          path: dist/
+      - name: Create release with .mcpb
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh release create "${{ github.ref_name }}" dist/*.mcpb \
+            --title "${{ github.ref_name }}" \
+            --generate-notes
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index badc57b..57bef1b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,53 +16,3 @@ jobs:
           python-version: "3.12"
       - run: pip install -r requirements.txt
       - run: python -m unittest discover -v
-
-  build-mcpb:
-    runs-on: ubuntu-latest
-    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version: "20"
-      - run: npm ci
-        working-directory: mcp-server
-      - run: npx mcpb pack
-        working-directory: mcp-server
-      - uses: actions/upload-artifact@v4
-        with:
-          name: mcpb
-          path: mcp-server/*.mcpb
-
-  tag-build:
-    runs-on: ubuntu-latest
-    needs: [test, build-mcpb]
-    permissions:
-      contents: write
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - name: Create build tag
-        run: |
-          DATE=$(date -u +%Y-%m-%d)
-          N=1
-          while git ls-remote --tags origin "refs/tags/build-${DATE}.${N}" | grep -q .; do
-            N=$((N + 1))
-          done
-          TAG="build-${DATE}.${N}"
-          git tag "$TAG"
-          git push origin "$TAG"
-          echo "BUILD_TAG=$TAG" >> "$GITHUB_ENV"
-      - uses: actions/download-artifact@v4
-        with:
-          name: mcpb
-          path: dist/
-      - name: Upload .mcpb to build tag release
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          gh release create "$BUILD_TAG" dist/*.mcpb \
-            --title "$BUILD_TAG" \
-            --notes "Automated build" \
-            --prerelease
diff --git a/docs/0-requirements.md b/docs/0-requirements.md
index aeb4135..4ed8973 100644
--- a/docs/0-requirements.md
+++ b/docs/0-requirements.md
@@ -236,6 +236,28 @@ Node.js MCP サーバーは環境変数のみで構成する（CLI 引数なし
 
 Node.js >= 18.0.0 が必要。
 
+## CI/CD
+
+### テスト（CI）
+
+| トリガー | ジョブ | 内容 |
+|---------|--------|------|
+| PR to main / push to main | test | Python unittest |
+
+### リリース（CD）
+
+| トリガー | ジョブ | 内容 |
+|---------|--------|------|
+| `v*` タグ push | build-mcpb | `mcpb pack` で .mcpb 生成 |
+| `v*` タグ push | release | GitHub Release 作成 + .mcpb 添付 |
+
+リリースフロー:
+1. `npm version patch/minor/major` で package.json 更新 + `v*` タグ作成
+2. `git push origin main --tags` でタグ push
+3. CD が自動実行: .mcpb 生成 → release 作成 → .mcpb 添付
+
+バージョン管理は npm (package.json) が正。manifest.json のバージョンも一致させる。
+
 ## Infrastructure
 
 | コンポーネント | 用途 |