# AI: /llms.txt (index) / /llms-full.txt (full) / /mcp (MCP server) User-agent: * User-agent: * Disallow: Content-Usage: train-ai=y Content-Signal: ai-train=yes Content-Signal: search=yes Content-Signal: ai-input=yes User-agent: * Disallow: /api/ Disallow: /api/* Sitemap: https://song-zh.com/sitemap.xml