Any sufficiently advanced technology is indistinguishable from magic.
Any sufficiently disguised magic is indistinguishable from technology.
Sometimes, magic and technology don't play together well – Which is bullshit, because a stick, used correctly is technology – are you telling me magic can't affect a stick?
Sometimes, magic and technology sing together, and this is the case here.
The Agency – created by beings you may as well call gods – is staffed by beings equal parts fairy dust and post-singularity technology. Men that are magic and machine without that being a contradiction.
They protect the masquerade, keeping human and fae apart – to the general benefit of both groups.
We like the Agency. They wear suits and they're fancy. Once upon a time, Agent Ryan rescued a child – and twenty years later, after meeting her again, adopted Stef, because they were each the family they were missing.