mcp-configuration-error-mcp-server-fails-with-unexpected-end-of-json-input-57c39e8c

THEN Verify that the MCP server configuration 'command' field points to a valid executable (e.g., 'npx -y @modelcontextprotocol/server-postgres') and that the arguments follow the standard MCP transport pattern. Remove any nested 'server' object from the configuration; instead pass connection parameters as arguments to the command. Ensure the command outputs valid JSON-RPC messages over stdio.

// Incorrect config (causes error)
"postgres": {
  "command": "echo",
  "server": { "type": "tcp", "host": "192.168.1.23", "port": 5432, ... }
}

// Correct config:
"postgres": {
  "command": "npx",
  "args": ["-y", "@modelcontextprotocol/server-postgres", "postgresql://richie:secretpassword@192.168.1.23:5432/richie"]
}