OpO FAST Triple Store, Web Server, and JSON Database
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The HTTP API supports TQL SELECT statements. TQL can be used for selecting only on the tree search path. An HTTP POST request with a TQL or JSON encoded TQL will be executed as a TQL against the database.

An example of a POST URL that executes a TQL statement is:

URL:
http://www.example.com/tql
Contents:
{ "select": { "id": "_:", "top": "$" }, "where": ["EQ", "firstname", "'Pete"], "filter": ["NOT", ["GTE", "age", 21]] }