MCP Servers not showing in the chat interface, what am I missing?

[javydekoning]

My config:

# For more information, see the Configuration Guide:
# https://www.librechat.ai/docs/configuration/librechat_yaml

# Configuration version (required)
version: 1.3.0

# Cache settings: Set to true to enable caching
cache: true

# Custom interface configuration
interface:
  # MCP Servers UI configuration
  mcpServers:
    placeholder: "MCP Servers"
    time:
      command: uvx
      args: ["mcp-server-time", "--local-timezone=Europe/Amsterdam"]
    librechat-docs:
      url: https://gitmcp.io/danny-avila/LibreChat

# Example Registration Object Structure (optional)
registration:
  socialLogins: ['openid']
  allowedDomains:
    - "<mydomain>.com"

# Definition of custom endpoints
endpoints:
  agents:
    disableBuilder: false
  custom:
    - name: "LiteLLM"
      apiKey: '${LITELLM_API_KEY}'
      baseURL: "http://litellm.litellm.svc.cluster.local:4000/v1"
      iconURL: "https://<mydomain>/litellm.png"
      models:
        default: ["anthropic-claude-haiku-v4.5"]
        fetch: true
      titleConvo: true
      titleModel: "anthropic-claude-haiku-v4.5"
      forcePrompt: false

Logs:

> [email protected] backend
> cross-env NODE_ENV=production node api/server/index.js

2025-10-25 13:28:54 info: Mongo Connection options
2025-10-25 13:28:54 info: {
  "bufferCommands": false
}
2025-10-25 13:28:54 info: Connected to MongoDB
2025-10-25 13:28:54 info: [getAppConfig] App configuration not initialized. Initializing AppService...
2025-10-25 13:28:54 info: Custom config file loaded:
2025-10-25 13:28:54 info: {
  "version": "1.3.0",
  "cache": true,
  "interface": {
    "mcpServers": {
      "placeholder": "MCP Servers",
      "time": {
        "command": "uvx",
        "args": [
          "mcp-server-time",
          "--local-timezone=Europe/Amsterdam"
        ]
      },
      "librechat-docs": {
        "url": "https://gitmcp.io/danny-avila/LibreChat"
      }
    }
  },
  "registration": {
    "socialLogins": [
      "openid"
    ],
    "allowedDomains": [
      "<mydomain>.com"
    ]
  },
  "endpoints": {
    "agents": {
      "disableBuilder": false
    },
    "custom": [
      {
        "name": "LiteLLM",
        "apiKey": "${LITELLM_API_KEY}",
        "baseURL": "http://litellm.litellm.svc.cluster.local:4000/v1",
        "iconURL": "https://<mydomain>/litellm.png",
        "models": {
          "default": [
            "anthropic-claude-haiku-v4.5"
          ],
          "fetch": true
        },
        "titleConvo": true,
        "titleModel": "anthropic-claude-haiku-v4.5",
        "forcePrompt": false
      }
    ]
  }
}
2025-10-25 13:28:54 warn: RAG API is either not running or not reachable at undefined, you may experience errors with file uploads.
2025-10-25 13:28:54 info: Turnstile is DISABLED (no siteKey provided).
2025-10-25 13:28:54 info: Configuring social logins...
2025-10-25 13:28:54 info: Configuring OpenID Connect...
2025-10-25 13:28:54 info: [openidStrategy] OpenID authentication configuration
2025-10-25 13:28:54 info: OpenID Connect configured successfully.
2025-10-25 13:28:54 info: Server listening on all interfaces at port 3080. Use http://localhost:3080 to access it
2025-10-25 13:28:54 info: OAuth reconnect manager initialized successfully.
2025-10-25 13:29:05 warn: [OAuthReconnectionManager] MCPManager not available, skipping OAuth MCP server reconnection
2025-10-25 13:29:05 error: Failed to load service key from file: /app/api/data/auth.json ENOENT: no such file or directory, stat '/app/api/data/auth.json'

Why don't I see the MCP Option?

On every refresh I see:

2025-10-25 13:53:39 warn: [OAuthReconnectionManager] MCPManager not available, skipping OAuth MCP server reconnection
2025-10-25 13:53:44 warn: [OAuthReconnectionManager] MCPManager not available, skipping OAuth MCP server reconnection
2025-10-25 13:53:45 warn: [OAuthReconnectionManager] MCPManager not available, skipping OAuth MCP server reconnection
2025-10-25 13:53:46 warn: [OAuthReconnectionManager] MCPManager not available, skipping OAuth MCP server reconnection
2025-10-25 13:54:18 warn: [OAuthReconnectionManager] MCPManager not available, skipping OAuth MCP server reconnection
2025-10-25 13:54:32 warn: [OAuthReconnectionManager] MCPManager not available, skipping OAuth MCP server reconnection

I have also tried just keeping

interface:
  # MCP Servers UI configuration
  mcpServers:
    placeholder: "MCP Servers"

Still the same issue?!

[javydekoning]

🤦‍♂️ I missed that there is mcpServers at the root and one under interface.mcpServers. So the correct format is:

mcpServers:
  time:
    command: uvx
    args: ["mcp-server-time", "--local-timezone=Europe/Amsterdam"]
interface:
  # MCP Servers UI configuration
  mcpServers:
    placeholder: "MCP Servers"