IVs/EVs

Match specific IVs/EVs with PokeMatch

{
   "species": "raichu",
   "evs": [
      "hp": 0,
      "attack": 0,
      "defence": 0,
      "special_attack": 0,
      "special_defence": 0,
      "speed": 0
   ]
}

This PokeMatch would only accept a very poorly trained Raichu with no EVs. The Stat Keys used are Cobblemon "clean identifiers", basically "cobblemon:hp", without the "cobblemon:" part.

You can match against IVs by replacing "evs" with "ivs":

{
    "species": "pikachu",
    "ivs": [
        "speed": 31
    ]
}

This PokeMatch would only accept a Pikachu with a Speed IV of 31. The other IVs could be anything, as well as the other EVs, as they're not included in the match.