{"rule_id":"AB-006","category":"documentation","icon":"🔌","title":"MCP Server Descriptor","short_description":"Your site advertises its MCP server so agents can discover and connect to it.","user_value":"MCP is the standard way agents interact with services. Without a descriptor, agents don't know you support it.","wrong_example":"No MCP descriptor. Agents don't know your site has an MCP server.","right_example":"MCP descriptor is discoverable, so agents can connect and use your tools.","effort_hint":"moderate","estimated_cost":"$10-50","severity":"medium","pillar":"understandability","version":"1.0.0","counted_in_score":true,"check":{"type":"http_fetch","target":"/.well-known/mcp.json"},"fix":{"eligible":false,"type":"none","note":"MCP server implementation is out of scope for AgentBadge to generate"},"checklist_anchor":"#AB-006","checklist_url":"/agent-readiness-checklist#AB-006","html_url":"/rules/AB-006","json_url":"/rules/AB-006.json","related_rules":[{"rule_id":"AB-004","title":"API Specification","category":"documentation"},{"rule_id":"AB-005","title":"Agent Guide Schema Validation","category":"documentation"},{"rule_id":"AB-024","title":"Detailed LLMs File","category":"documentation"},{"rule_id":"AB-025","title":"LLMs File Linked from HTML","category":"documentation"},{"rule_id":"AB-049","title":"RSS or Atom Feed","category":"documentation"},{"rule_id":"AB-052","title":"Social Preview Image","category":"documentation"},{"rule_id":"AB-053","title":"SVG Favicon","category":"documentation"},{"rule_id":"AB-054","title":"Canonical URL","category":"documentation"},{"rule_id":"AB-055","title":"RSS Feed Linked from HTML","category":"documentation"},{"rule_id":"AB-064","title":"Agent Registration Instructions","category":"documentation"}]}