Direct web query of VSX/VSP

I'm a planetarium software author (ECU) and I'd like to update it so users can do an aavso query of an object.

I used to use: http://www.aavso.org/cgi-bin/searchcharts3.pl?name=VARNAME [1]

but it no longer works.

I see that VSX in the about page says:

"Querying the Database

Web-based tools for querying VSX in various ways are available to the public. The public data returned in a query transaction contains all the accumulated data for the most recent revision level for each star in the recordset, including details of all modifications made to the data, and references to support those changes. Previous revisions may also be viewed. The public interface does not include the means for modifying the data in any way, but a form for sending suggestions for modification to the Project Administrator is made available."

Is there documentation for this?

Also, since we keep being told: "VSP is not a planetarium program" :-), I'd like to better integrate it with one, as that is what many of us use to plan our observations. It would be really nice to click on a star in the planetarium and press a button and up comes a VSP chart.

Can I bring up a VSP chart from an appropriately formatted web link? If so, where can I get the documentation?

--- Dave