Remote input?

[djbpitt]

Is it possible to use xmq to transform plain-text fetched from a remove site with ixml? Perhaps I've mistyped something, but neither:

xmq --ixml=grammar.ixml http://example.com

nor

curl http://example.com | xml --ixml=grammar.ixml

seems to work (the first says "could not read" and the second "broken pipe"), and I wasn’t able to find an explanation or example in the documentation.