That is correct. Unfortunately the current built-in list vertices endpoint doesn't include an offset flag https://docs.tigergraph.com/tigergraph-server/current/api/built-in-endpoints#_list_vertices
List Vertices Parameters:
count_only
Takes a boolean value. If the value is true, the results field will only contain the count of how many vertices were selected. Default is false.
select
Attributes of the selected vertices to return. The parameter takes a list, which is a string of comma-separated values, and will only return the attributes that are provided.
filter
Conditions used to filter the returned vertices. The parameter takes a list of conditions, which is a string of comma-separated values. If any filter conditions are provided, the endpoint will only return the vertices that satisfy the conditions. Six comparison operators are supported for this parameter: =, !=, >, >=, < and <=. If the value on the right side of an operator is a string literal, it should be enclosed in double-quotes.
limit
Integer value that specifies the total number of vertices to return
sort
Attributes to sort the results by. The parameter takes a list, which is a string of comma-separated values, and will sort the returned vertices based on the attributes provided in the list in order. Add "-" in front of the attribute to sort in descending order.
timeout
Integer that specifies the number of seconds after which the query will time out. If the parameter is set to 0 or isn’t provided, the system-wide endpoint timeout setting is applied.