diff --git a/bin/add-skill.js b/bin/add-skill.js
index ba267b6..4f8b011 100644
--- a/bin/add-skill.js
+++ b/bin/add-skill.js
@@ -1,25 +1,42 @@
 #!/usr/bin/env node
 /**
- * bin/add-skill.js — CLI installer wrapper for tidyfactor-html
+ * bin/add-skill.js — Multi-Agent Skill Installer Wrapper for tidyfactor-html
+ * Supports Trae, Cursor, Windsurf, Antigravity, GitHub Copilot, RooCode, OpenCode, KiloCode, Warp, and Universal.
+ *
+ * @license Apache-2.0
  */
 
 const fs = require('fs');
 const path = require('path');
+const os = require('os');
 
 const targetDir = process.cwd();
 const skillSource = path.resolve(__dirname, '..');
-const agentSkillsDir = path.join(targetDir, '.agents', 'skills', 'tidyfactor-html');
+const skillName = 'tidyfactor-html';
 
-fs.mkdirSync(agentSkillsDir, { recursive: true });
+const AGENT_MAP = [
+  { name: 'Trae AI IDE',               dir: path.join(targetDir, '.trae', 'skills', skillName),        test: path.join(targetDir, '.trae') },
+  { name: 'Cursor IDE',                dir: path.join(targetDir, '.cursor', 'skills', skillName),      test: path.join(targetDir, '.cursor') },
+  { name: 'Windsurf Cascade',          dir: path.join(targetDir, '.windsurf', 'skills', skillName),    test: path.join(targetDir, '.windsurf') },
+  { name: 'GitHub Copilot',            dir: path.join(targetDir, '.github', 'prompts', skillName),     test: path.join(targetDir, '.github') },
+  { name: 'RooCode',                   dir: path.join(targetDir, '.roo', 'skills', skillName),         test: path.join(targetDir, '.roo') },
+  { name: 'OpenCode / Zen',            dir: path.join(targetDir, '.opencode', 'skills', skillName),    test: path.join(targetDir, '.opencode') },
+  { name: 'KiloCode',                  dir: path.join(targetDir, '.kilocode', 'skills', skillName),    test: path.join(targetDir, '.kilocode') },
+  { name: 'Warp Terminal',             dir: path.join(targetDir, '.warp', 'skills', skillName),        test: path.join(targetDir, '.warp') },
+  { name: 'Kiro Spec IDE',             dir: path.join(targetDir, '.kiro', 'skills', skillName),        test: path.join(targetDir, '.kiro') },
+  { name: 'Claude Code',               dir: path.join(targetDir, '.claude', 'skills', skillName),      test: path.join(targetDir, '.claude') },
+  { name: 'Zed AI Agent',              dir: path.join(targetDir, '.zed', 'skills', skillName),         test: path.join(targetDir, '.zed') },
+  { name: 'Google Antigravity/Gemini', dir: path.join(targetDir, '.agents', 'skills', skillName),      test: path.join(targetDir, '.agents') },
+];
 
 function copyRecursive(src, dest) {
+  fs.mkdirSync(dest, { recursive: true });
   const entries = fs.readdirSync(src, { withFileTypes: true });
   for (const entry of entries) {
     const srcPath = path.join(src, entry.name);
     const destPath = path.join(dest, entry.name);
     if (['.git', 'node_modules', 'dist'].includes(entry.name)) continue;
     if (entry.isDirectory()) {
-      fs.mkdirSync(destPath, { recursive: true });
       copyRecursive(srcPath, destPath);
     } else {
       fs.copyFileSync(srcPath, destPath);
@@ -27,5 +44,22 @@ function copyRecursive(src, dest) {
   }
 }
 
-copyRecursive(skillSource, agentSkillsDir);
-console.log('✓ Successfully injected tidyfactor-html skill into .agents/skills/tidyfactor-html');
+// Determine installation targets
+let mountedTargets = [];
+
+for (const agent of AGENT_MAP) {
+  if (fs.existsSync(agent.test)) {
+    copyRecursive(skillSource, agent.dir);
+    mountedTargets.push(agent.name + ' (' + path.relative(targetDir, agent.dir) + ')');
+  }
+}
+
+// Always ensure universal fallback in .agents/skills/
+const defaultDir = path.join(targetDir, '.agents', 'skills', skillName);
+copyRecursive(skillSource, defaultDir);
+if (!mountedTargets.some(t => t.includes('.agents'))) {
+  mountedTargets.push('Universal Default (.agents/skills/' + skillName + ')');
+}
+
+console.log('✨ Successfully injected ' + skillName + ' into:');
+mountedTargets.forEach(t => console.log('  • ' + t));