docs: document additional MCP discovery paths

ai/model-context-protocol.mdx

@@ -116,6 +116,8 @@ Mintlify hosts a discovery document at `/.well-known/mcp` for agents and tools t
 | `servers[].name` | Identifier for the server entry. |
 | `servers[].authentication` | Authentication method for the server entry. |
 
+For compatibility with agent-readiness scanners, the same discovery document is also available at `/.well-known/mcp.json`. Mintlify additionally serves an [MCP server card](https://modelcontextprotocol.io) at `/.well-known/mcp/server-card.json` and a list of server cards at `/.well-known/mcp/server-cards.json`. All discovery endpoints are served automatically and require no configuration.
+
 ### Enable authenticated MCP
 
 If your documentation requires authentication, your MCP server requires users to authenticate before connecting. When a user adds your MCP server URL to their AI tool, they must log in with their existing credentials. After authenticating, a redirect sends them back to their tool. The MCP server only returns content each user has permission to access based on their [user groups](/deploy/authentication-setup).

es/ai/model-context-protocol.mdx

@@ -133,6 +133,8 @@ Mintlify aloja un documento de descubrimiento en `/.well-known/mcp` para que los
 | `servers[].name` | Identificador de la entrada del servidor. |
 | `servers[].authentication` | Método de autenticación de la entrada del servidor. |
 
+Para garantizar la compatibilidad con los escáneres de preparación para agentes, el mismo documento de descubrimiento también está disponible en `/.well-known/mcp.json`. Mintlify también publica una [tarjeta de servidor MCP](https://modelcontextprotocol.io) en `/.well-known/mcp/server-card.json` y una lista de tarjetas de servidor en `/.well-known/mcp/server-cards.json`. Todos los endpoints de descubrimiento se sirven automáticamente y no requieren configuración.
+
 <div id="enable-authenticated-mcp">
   ### Habilitar MCP autenticado
 </div>

fr/ai/model-context-protocol.mdx

@@ -133,6 +133,8 @@ Mintlify héberge un document de découverte à l’adresse `/.well-known/mcp` p
 | `servers[].name` | Identifiant de l’entrée du serveur. |
 | `servers[].authentication` | Méthode d’authentification de l’entrée du serveur. |
 
+Pour la compatibilité avec les scanners de préparation aux agents, le même document de découverte est également disponible à l’adresse `/.well-known/mcp.json`. Mintlify expose en outre une [carte de serveur MCP](https://modelcontextprotocol.io) à `/.well-known/mcp/server-card.json` et une liste de cartes de serveur à `/.well-known/mcp/server-cards.json`. Tous les endpoints de découverte sont servis automatiquement et ne nécessitent aucune configuration.
+
 <div id="enable-authenticated-mcp">
   ### Activer le MCP avec authentification
 </div>

zh/ai/model-context-protocol.mdx

@@ -133,6 +133,8 @@ Mintlify 在 `/.well-known/mcp` 托管一个发现文档，便于智能体和工
 | `servers[].name` | 服务器条目的标识符。 |
 | `servers[].authentication` | 服务器条目的身份验证方式。 |
 
+为了与智能体就绪扫描器兼容，相同的发现文档也可在 `/.well-known/mcp.json` 获取。Mintlify 还会在 `/.well-known/mcp/server-card.json` 提供 [MCP 服务器卡片](https://modelcontextprotocol.io)，并在 `/.well-known/mcp/server-cards.json` 提供服务器卡片列表。所有发现端点均自动提供，无需任何配置。
+
 <div id="enable-authenticated-mcp">
   ### 启用 MCP 认证
 </div>