Sentient who makes a living through searching abandoned spacecraft, ruined colonies and transcension sites, looking for clarketech artefacts. A dedicated, obsessive clarker may graduate to become an ascension (or transcension) chaser, travelling hundreds of lightyears into dangerous territories looking for powerful relics. More often, clarkers make their living sifting through marketplaces for any unusual items, especially marketplaces with associations with transapient-level civilisations or (better still) exotic metaempires or xenosophonts.
The items Clarkers find or trade in are not necessarily clarketech, and most of them turn out to be hoaxes, counterfeits, or just cases of misidentification of common objects. But every so often, something truly rare and unique turns up. A single good find can set a Clarker up in the lap of luxury for life.
Pseudoclarketech - Text by M. Alan Kazlev Technology that in all ways pretends to be, or appears to be, clarketech, but, although advanced, still shows itself to be amenable to study and reverse engineering.