diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 0dc0445..c440dca 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -13,6 +13,10 @@ on:
 jobs:
   validate:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [20, 22]
 
     steps:
       - name: Checkout repository
@@ -21,13 +25,20 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: ${{ matrix.node-version }}
+          cache: npm
 
       - name: Install dependencies
-        run: npm install
+        run: npm ci
 
-      - name: Validate schemas
-        run: npm run validate:schemas
+      - name: Validate package
+        run: npm run validate
 
-      - name: Validate examples
-        run: npm run validate:examples
+      - name: Verify checksums
+        run: npm run checksums:verify
+
+      - name: Smoke test entrypoint import
+        run: npm run test:smoke:import
+
+      - name: Smoke test npm pack
+        run: npm run test:smoke:pack
diff --git a/package.json b/package.json
index 5681aae..f1c8102 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,9 @@
     "checksums:verify": "bash scripts/verify-checksums.sh",
     "checksums:dirty": "git diff --exit-code -- checksums.txt",
     "prepack": "npm run checksums:gen",
-    "prepublishOnly": "npm run checksums:gen && npm run checksums:dirty && npm run validate"
+    "prepublishOnly": "npm run checksums:gen && npm run checksums:dirty && npm run validate",
+    "test:smoke:import": "node scripts/smoke-import.mjs",
+    "test:smoke:pack": "node scripts/smoke-pack.mjs"
   },
   "main": "./index.js",
   "exports": {
diff --git a/scripts/smoke-import.mjs b/scripts/smoke-import.mjs
new file mode 100644
index 0000000..1955808
--- /dev/null
+++ b/scripts/smoke-import.mjs
@@ -0,0 +1,11 @@
+import assert from 'node:assert/strict';
+import * as commons from '../index.js';
+
+const exportNames = Object.keys(commons);
+assert.ok(exportNames.length > 0, 'Expected package entrypoint to export schema bindings.');
+
+for (const exportName of exportNames) {
+  assert.ok(commons[exportName], `Expected export ${exportName} to be defined.`);
+}
+
+console.log(`✅ Imported package entrypoint successfully with ${exportNames.length} exports.`);
diff --git a/scripts/smoke-pack.mjs b/scripts/smoke-pack.mjs
new file mode 100644
index 0000000..763ed66
--- /dev/null
+++ b/scripts/smoke-pack.mjs
@@ -0,0 +1,44 @@
+import assert from 'node:assert/strict';
+import { mkdtemp, rm, stat } from 'node:fs/promises';
+import os from 'node:os';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { execFile } from 'node:child_process';
+import { promisify } from 'node:util';
+
+const execFileAsync = promisify(execFile);
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const ROOT = path.join(__dirname, '..');
+
+const tempDir = await mkdtemp(path.join(os.tmpdir(), 'protocol-commons-pack-'));
+
+try {
+  const { stdout, stderr } = await execFileAsync(
+    'npm',
+    ['pack', '--json', '--pack-destination', tempDir],
+    { cwd: ROOT }
+  );
+
+  if (stderr.trim()) {
+    process.stderr.write(stderr);
+  }
+
+  const jsonStart = stdout.indexOf('[');
+  const jsonEnd = stdout.lastIndexOf(']');
+
+  assert.ok(jsonStart >= 0 && jsonEnd >= jsonStart, 'Expected npm pack --json to emit a JSON payload.');
+
+  const packs = JSON.parse(stdout.slice(jsonStart, jsonEnd + 1));
+
+  assert.equal(packs.length, 1, 'Expected npm pack to emit exactly one tarball.');
+
+  const tarballPath = path.join(tempDir, packs[0].filename);
+  const tarballStat = await stat(tarballPath);
+  assert.ok(tarballStat.isFile(), `Expected tarball at ${tarballPath}.`);
+  assert.ok(tarballStat.size > 0, 'Expected packed tarball to be non-empty.');
+
+  console.log(`✅ npm pack succeeded: ${packs[0].filename}`);
+} finally {
+  await rm(tempDir, { recursive: true, force: true });
+}