Agile Casting and Spell-Like Abilities

[Kishmo]

Can Agile Casting be used for spell-like abilities that aren't just "you can cast an existing spell"?

The Agile Casting feat lets you cast a standard-action spell during movement, as part of a Full Action. It also explicitly allows Supernatural abilities, as long as they're a standard-action or less. My question is regarding spell-like abilities: can you cast those using Agile Casting?

Spell-like abilities are treated like spells, except in that you usually get them in a different way than by having levels in a spellcasting class. Their entry says:
Spell-like abilities are magical abilities that function very much like spells do ... A spell-like ability has a casting time of a standard action unless noted otherwise in the ability or spell description ... In all other ways, a spell-like ability functions just like a spell.

I think it's pretty clear that SLA are intended to be useable wherever you can use a spell (and IIRC that was an explicit rule in Pathfinder 1E?) so, for example, a lashunta with Agile Casting could cast their species Detect Thoughts SLA with Agile Casting.

My question is about funkier SLAs, that aren't just "cast an existing spell." For example, can you use Agile Casting for something like a Shaper Mystic's Apportation, which doesn't have any Action listed, and so gets caught under the SLA's default of "Standard unless stated otherwise"? Could you use Agile Casting with some of the technomancer magical hacks that combine spells with attacks in one standard action, like Spellshot or Spell Grenade (in which you cram a spell into a grenade using the spell's usual casting time, and then throw the spell grenade as a standard action?) I think the RAW are ok with either, as long as the spell in question is a standard action (spellshot requires is to be; spell grenade less so) but figured I'd do a pulse-check on the Fora to see.

[Garretmander]

I would typically say spell like abilities yes. Standard actions that include spells like magic hacks no, as they are a separate standard action including a spell in the same way that agile casting is a full action including a spell.

[Darg727]

It functions just like a spell except for the differences pointed out on pg 262 of the CRB. So, yes you can use it with agile casting.

You aren't actually casting a spell, so it can't be used with something like Magic Hack because it says, "When casting a spell," which is the trigger for the effect. If you'll notice, the spell focus feat explicitly prevents SLAs from benefiting from the feat.

If it has to do with how a spell functions you are usually good to substitute spell with spell-like ability unless otherwise told. If it requires the casting of a spell, then you would not.

[Kishmo]

I'm not sure I'm convinced. A lot of the SLA Magic Hacks specifically include verbiage like "when you cast a spell..." Like Darg727 says, "it has to do with how a spell functions." These SLAs are almost like metamagic feats were, in that they alter a spell, but it's still a spell being cast. For example, Energy Alteration says, "When you cast a spell that deals damage with a casting time of 1 standard action,..." Energy Alteration isn't its own special Standard Action; rather it modifies what you can do when you do cast a Standard Action Spell. (Granted you need to spend 1 RP in order to not change the casting time, and make this a legal combination with Agile Casting, but that's beside the point.) Same with Harmful Spells: "When you cast an instantaneous spell that deals damage, you can..." It's not its own action; it just gives you additional abilities when you cast a spell. I don't see why you couldn't use either of those when you cast a spell with Agile Casting.

Of course, Harmful Spells is an Extraordinary Ability and Energy Alteration is a Supernatural Ability, so while they inform the matter at hand, they are academic. I think that, in the same way, SLAs that alter the way you can cast spells without being their own actions (like Spellshot, which, like the two above examples, just gives you additional options when you cast a spell) are fair game for Agile Casting. My reading is, this would also include some other Standard Action SLA like, say, Adaptive Defenses. (which is a standard action, uses spells slots and, like all SLAs, "functions just like a spell.") It's slightly less clear cut with Spell Grenade, but the wording still makes it very clear that spell grenade is casting a spell: "Casting a spell with spell grenade uses the spell’s standard casting time..."
I don't see any reason to disallow SLAs with Agile Casting, as long as they meet the other requirements (i.e., Standard Action) unless they, I dunno, have specific verbiage that "this does not count as casting a spell" or something.

(Honestly, there aren't too many applications for SLAs with Agile Casting. Spellshot is the obvious one, but I guess there's certain situations you could want to use, say, a Mystic's Spell Transference epiphany SLA, Magic Negation, or Arcane Spyware in the middle of a move?)