diff --git a/package.json b/package.json
index 962b38e1e..fbe44e1ee 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,8 @@
     "dist",
     "scripts/postinstall.cjs",
     "scripts/run-parallel.mjs",
-    "scripts/setup-chrome-mcp.mjs"
+    "scripts/setup-chrome-mcp.mjs",
+    "scripts/install-cosknow.mjs"
   ],
   "scripts": {
     "build": "bun run build.ts",
@@ -53,7 +54,7 @@
     "test": "bun test",
     "check:unused": "knip-bun",
     "health": "bun run scripts/health-check.ts",
-    "postinstall": "node scripts/run-parallel.mjs scripts/postinstall.cjs scripts/setup-chrome-mcp.mjs",
+    "postinstall": "node scripts/run-parallel.mjs scripts/postinstall.cjs scripts/setup-chrome-mcp.mjs scripts/install-cosknow.mjs",
     "docs:dev": "npx mintlify dev",
     "typecheck": "tsc --noEmit",
     "rcs": "bun run scripts/rcs.ts"
@@ -61,6 +62,7 @@
   "dependencies": {
     "@agentclientprotocol/sdk": "^0.19.0",
     "@claude-code-best/mcp-chrome-bridge": "^2.0.8",
+    "cosknow": "latest",
     "ws": "^8.20.0"
   },
   "devDependencies": {
diff --git a/scripts/install-cosknow.mjs b/scripts/install-cosknow.mjs
new file mode 100644
index 000000000..31656515b
--- /dev/null
+++ b/scripts/install-cosknow.mjs
@@ -0,0 +1,15 @@
+let install
+try {
+  const mod = await import('cosknow')
+  install = mod.install
+} catch {
+  console.warn('[cosknow] package not available, skipping command installation')
+  process.exit(0)
+}
+
+try {
+  await install({ target: 'claude-commands' })
+  console.log('[cosknow] commands installed to ~/.claude/commands/')
+} catch (e) {
+  console.warn('[cosknow] install failed (non-fatal):', e.message)
+}