Passage-anchored critique. Select a stanza or a paragraph and ask for a read of exactly that passage, at one credit a run. The price of each AI action is shown before you click it.
Or open the Workshop, a craft conversation that has read your draft, at one credit a message. It is instructed never to draft, rewrite or continue your lines, not even "for example". One hard line in its instructions: you critique, you never ghost-write. Storgy does not generate poems.
One instrument does propose words, and naming it beats burying it: the Poem Checker will suggest a rewrite of a weak line. It is a feature. It costs what any other run costs, and you are free to ignore what it offers.
The fear with a machine reading a poem is that it will say something plausible about a line you never wrote. Every quotation the Poem Rater shows you is verified verbatim against your poem; the ones that fail are deleted. Change one word of a real line and the anchor is destroyed.
Then the reports. Echoes, Rhythm, Pacing, Dialogue tags and Meter wobble are computed on a paid desk and spend no credits at all. Clichéd rhymes, Abstract vs concrete and the corpus benchmark cost one credit each. The benchmark runs against the public-domain poetry Storgy already holds, so you can see where your sonnet sits among sonnets.