diff --git a/scripts/publish.mjs b/scripts/publish.mjs
index bc738a39..413d6dcf 100644
--- a/scripts/publish.mjs
+++ b/scripts/publish.mjs
@@ -126,3 +126,13 @@ execFileSync('pnpm', ['changeset', 'publish'], {
   cwd: ROOT,
   stdio: 'inherit',
 });
+
+// Step 7: Verify what we just published is actually installable and importable.
+// The workspace can't tell us this: pnpm resolves siblings from source, so a
+// stale dependency pin or an unrewritten specifier only breaks once a consumer
+// resolves from the registry (see #35 and #71). Fails the job if a release is
+// broken, so it is caught in minutes rather than by the first user to try it.
+execFileSync('node', [join(ROOT, 'scripts', 'verify-published-packages.mjs')], {
+  cwd: ROOT,
+  stdio: 'inherit',
+});
diff --git a/scripts/verify-published-packages.mjs b/scripts/verify-published-packages.mjs
new file mode 100644
index 00000000..f426578d
--- /dev/null
+++ b/scripts/verify-published-packages.mjs
@@ -0,0 +1,251 @@
+/*
+ * Copyright (c) 2026, Salesforce, Inc.
+ * All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * For full license text, see the LICENSE file in the repo root or https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+/**
+ * Post-publish smoke test: install what we just published straight from the
+ * registry, the way a consumer does, and import it.
+ *
+ * Two releases have now shipped artifacts that could not be imported at all:
+ *
+ *   #35 - dist/ still referenced the internal @agentscript/* scope after the
+ *         publish rewrite, so consumers hit ERR_MODULE_NOT_FOUND.
+ *   #71 - agentforce, compiler and agentforce-dialect were published pinning
+ *         @sf-agentscript/language@2.5.4 while their dist/ had been compiled
+ *         against a newer language, so consumers hit
+ *           SyntaxError: ... does not provide an export named
+ *                        'nullLiteralValidationPass'
+ *         and
+ *           TypeError: ....variantMatch is not a function
+ *
+ * Why this runs *after* `changeset publish` rather than in CI: inside the
+ * workspace pnpm resolves siblings from source, and packing from the workspace
+ * always produces a self-consistent set of tarballs. Both bugs only surface once
+ * a dependent resolves a sibling from the *registry* - i.e. only in a real
+ * consumer install. A pre-publish pack-and-install check would happily pass
+ * while the published artifact is broken, so we verify the real thing.
+ *
+ * Note: this deliberately uses `npm`, not `pnpm`, for the consumer install -
+ * pnpm-workspace.yaml sets `minimumReleaseAge: 1440`, which would refuse to
+ * install a package published seconds ago.
+ *
+ * Usage:
+ *   node scripts/verify-published-packages.mjs
+ *       verify every publishable workspace package at its current version
+ *   node scripts/verify-published-packages.mjs @sf-agentscript/compiler@2.7.1
+ *       verify explicit <name>@<version> specs (handy for spot-checking npm)
+ *
+ * Exits non-zero if any published package cannot be imported, so a broken
+ * release fails the workflow loudly instead of sitting silently on npm.
+ */
+
+import { execFileSync } from 'node:child_process';
+import { mkdtempSync, writeFileSync, readFileSync, existsSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+
+const ROOT = new URL('..', import.meta.url).pathname;
+
+/**
+ * Run a package-manager binary. On Windows `npm`/`pnpm` are `.cmd` shims, and
+ * since Node 20 execFile refuses to spawn those without a shell (EINVAL), so we
+ * opt into one there. CI runs on Linux, where the plain binary is spawned.
+ */
+const run = (bin, args, opts = {}) =>
+  execFileSync(bin, args, {
+    encoding: 'utf8',
+    shell: process.platform === 'win32',
+    ...opts,
+  });
+
+// How long to wait for a freshly published version to reach the registry.
+const REGISTRY_RETRIES = 5;
+const REGISTRY_RETRY_DELAY_MS = 5000;
+const IMPORT_TIMEOUT_MS = 60_000;
+
+/**
+ * Entry points that are not meant to be imported bare in Node. Keyed by the
+ * package name without its scope, so this works either side of the publish-time
+ * scope rewrite. Each reason was confirmed by importing the published package.
+ */
+const NOT_BARE_IMPORTABLE = {
+  'lsp-server':
+    'server entry - a bare import throws "Connection input stream is not set" by design',
+  'lsp-browser': 'browser bundle - calls browser-only APIs on import',
+  monaco: 'ships TypeScript source as its entry (src/index.ts)',
+  'parser-tree-sitter':
+    'native binding - needs a platform-aware check, not a bare import',
+};
+
+const readJson = path => JSON.parse(readFileSync(path, 'utf8'));
+
+/** The specifier a consumer actually loads for `import '<pkg>'`. */
+function defaultEntry(pkgJson) {
+  const dot = pkgJson.exports?.['.'];
+  const target =
+    typeof dot === 'string' ? dot : (dot?.import ?? dot?.default ?? null);
+  return target ?? pkgJson.main ?? null;
+}
+
+const unscoped = name =>
+  name.includes('/') ? name.slice(name.indexOf('/') + 1) : name;
+
+/** Why this package is not import-tested, or null if it should be. */
+function skipReason(pkgJson, pkgPath) {
+  if (pkgJson.private) return 'private';
+
+  const declared = NOT_BARE_IMPORTABLE[unscoped(pkgJson.name)];
+  if (declared) return declared;
+
+  if (existsSync(join(pkgPath, 'binding.gyp'))) {
+    return 'native addon (binding.gyp)';
+  }
+
+  const entry = defaultEntry(pkgJson);
+  if (!entry) return 'no entry point declared';
+  if (!/\.(js|mjs|cjs)$/.test(entry)) {
+    return `entry is not JavaScript (${entry})`;
+  }
+  return null;
+}
+
+const sleep = ms =>
+  execFileSync(process.execPath, [
+    '-e',
+    `Atomics.wait(new Int32Array(new SharedArrayBuffer(4)), 0, 0, ${ms})`,
+  ]);
+
+/** True once <name>@<version> is resolvable on the registry. */
+function onRegistry(name, version) {
+  for (let attempt = 1; attempt <= REGISTRY_RETRIES; attempt++) {
+    try {
+      const out = run('npm', ['view', `${name}@${version}`, 'version'], {
+        stdio: ['ignore', 'pipe', 'ignore'],
+      });
+      if (out.trim()) return true;
+    } catch (e) {
+      // A missing npm binary must not be mistaken for a missing package.
+      if (e.code === 'ENOENT' || e.code === 'EINVAL') {
+        throw new Error('could not run "npm" - is npm on PATH?');
+      }
+      // Otherwise: not on the registry yet.
+    }
+    if (attempt < REGISTRY_RETRIES) sleep(REGISTRY_RETRY_DELAY_MS);
+  }
+  return false;
+}
+
+const firstErrorLine = output => {
+  const lines = output.toString().split('\n');
+  const hit = lines.map(l => l.trim()).find(l => /error/i.test(l));
+  return (hit ?? lines[0] ?? '').slice(0, 200);
+};
+
+/**
+ * Install <name>@<version> into a clean directory exactly as a consumer would,
+ * then import it in a child process. Returns an error string, or null on success.
+ */
+function verifyConsumerInstall(name, version) {
+  const dir = mkdtempSync(join(tmpdir(), 'agentscript-smoke-'));
+  writeFileSync(
+    join(dir, 'package.json'),
+    JSON.stringify({
+      name: 'agentscript-smoke-test',
+      version: '0.0.0',
+      private: true,
+      type: 'module',
+    })
+  );
+
+  try {
+    run('npm', ['install', `${name}@${version}`, '--no-audit', '--no-fund'], {
+      cwd: dir,
+      stdio: ['ignore', 'pipe', 'pipe'],
+    });
+  } catch (e) {
+    return `install failed: ${firstErrorLine(e.stderr || e.message)}`;
+  }
+
+  try {
+    execFileSync(
+      process.execPath,
+      ['--input-type=module', '-e', `await import(${JSON.stringify(name)});`],
+      {
+        cwd: dir,
+        encoding: 'utf8',
+        timeout: IMPORT_TIMEOUT_MS,
+        stdio: ['ignore', 'pipe', 'pipe'],
+      }
+    );
+  } catch (e) {
+    return `import failed: ${firstErrorLine(e.stderr || e.message)}`;
+  }
+
+  return null;
+}
+
+/** Explicit `<name>@<version>` specs, or the publishable workspace packages. */
+function targets() {
+  const args = process.argv.slice(2);
+  if (args.length > 0) {
+    return args.map(spec => {
+      const at = spec.lastIndexOf('@');
+      if (at <= 0) throw new Error(`expected <name>@<version>, got "${spec}"`);
+      return { name: spec.slice(0, at), version: spec.slice(at + 1) };
+    });
+  }
+
+  const workspace = JSON.parse(
+    run('pnpm', ['-r', 'list', '--json', '--depth', '-1'], { cwd: ROOT })
+  );
+
+  const out = [];
+  for (const pkg of workspace) {
+    const pkgJsonPath = join(pkg.path, 'package.json');
+    if (!existsSync(pkgJsonPath)) continue;
+    const pkgJson = readJson(pkgJsonPath);
+    const skip = skipReason(pkgJson, pkg.path);
+    if (skip) {
+      console.log(`  - ${pkgJson.name} - skipped (${skip})`);
+      continue;
+    }
+    out.push({ name: pkgJson.name, version: pkgJson.version });
+  }
+  return out;
+}
+
+// ---------------------------------------------------------------------------
+
+console.log('\nVerifying published packages install and import cleanly\n');
+
+const failures = [];
+let checked = 0;
+
+for (const { name, version } of targets()) {
+  if (!onRegistry(name, version)) {
+    console.log(`  - ${name}@${version} - skipped (not on the registry)`);
+    continue;
+  }
+
+  const error = verifyConsumerInstall(name, version);
+  checked++;
+  if (error) {
+    failures.push({ name, version, error });
+    console.log(`  FAIL ${name}@${version}\n         ${error}`);
+  } else {
+    console.log(`  ok   ${name}@${version}`);
+  }
+}
+
+if (failures.length > 0) {
+  console.error(
+    `\n${failures.length} of ${checked} published package(s) cannot be imported by a consumer.`
+  );
+  console.error('The release is on npm but broken - publish a fix now.\n');
+  process.exit(1);
+}
+
+console.log(`\nAll ${checked} published package(s) import cleanly.\n`);