diff --git a/domains/integrations/openspec.ts b/domains/integrations/openspec.ts
index 79b9c4ea..3fb1f82e 100644
--- a/domains/integrations/openspec.ts
+++ b/domains/integrations/openspec.ts
@@ -157,7 +157,6 @@ function isCommandAvailable(command: string): boolean {
 }
 
 async function ensureOpenSpecCli(
-  scope: InstallScope,
   projectPath: string,
   shouldInstall = true,
 ): Promise<'ready' | 'missing' | 'failed'> {
@@ -168,10 +167,9 @@ async function ensureOpenSpecCli(
   const label = alreadyInstalled ? 'Upgrading' : 'Installing';
   console.warn(`    ${label} OpenSpec CLI...`);
   try {
-    const npmArgs =
-      scope === 'global'
-        ? ['install', '-g', '@fission-ai/openspec@latest']
-        : ['install', '@fission-ai/openspec@latest'];
+    // OpenSpec is invoked as a PATH command below; keep the CLI install global
+    // regardless of Comet's project/global skill installation scope.
+    const npmArgs = ['install', '-g', '@fission-ai/openspec@latest'];
     execFileSync(getNpmExecutable(), npmArgs, {
       cwd: projectPath,
       stdio: 'inherit',
@@ -315,7 +313,7 @@ async function installOpenSpec(
   shouldInstallCli = true,
   mirrorOpenCodePlatformIds: string[] = [],
 ): Promise<'installed' | 'failed' | 'skipped'> {
-  const cliStatus = await ensureOpenSpecCli(scope, projectPath, shouldInstallCli);
+  const cliStatus = await ensureOpenSpecCli(projectPath, shouldInstallCli);
   if (cliStatus === 'failed') {
     console.error(
       `    OpenSpec CLI not available. Install manually: npm install -g @fission-ai/openspec@latest`,
diff --git a/test/domains/integrations/openspec.test.ts b/test/domains/integrations/openspec.test.ts
index 47ce5829..0b8e97b4 100644
--- a/test/domains/integrations/openspec.test.ts
+++ b/test/domains/integrations/openspec.test.ts
@@ -102,6 +102,26 @@ describe('openspec', () => {
       expect(mockedExecFileSync).toHaveBeenCalledTimes(4);
     });
 
+    it('installs the OpenSpec CLI globally for project scope to avoid project node_modules', async () => {
+      mockedExecFileSync.mockReturnValueOnce(Buffer.from('/usr/bin/openspec'));
+      mockedExecFileSync.mockReturnValueOnce(Buffer.from('upgraded'));
+      mockedExecFileSync.mockReturnValueOnce(Buffer.from('/usr/bin/openspec'));
+      mockedExecFileSync.mockReturnValueOnce(Buffer.from('ok'));
+
+      const { getNpmExecutable, installOpenSpec } =
+        await import('../../../domains/integrations/openspec.js');
+      const result = await installOpenSpec('/tmp/test', ['claude'], 'project');
+
+      expect(result).toBe('installed');
+      const npmCall = mockedExecFileSync.mock.calls.find(
+        ([command, args]) =>
+          command === getNpmExecutable() &&
+          Array.isArray(args) &&
+          args.includes('@fission-ai/openspec@latest'),
+      );
+      expect(npmCall?.[1]).toEqual(['install', '-g', '@fission-ai/openspec@latest']);
+    });
+
     it('returns failed when openspec CLI is not available', async () => {
       mockedExecFileSync.mockImplementationOnce(() => {
         throw new Error('not found');