A long draft, still in the document

Anvyll is a Windows prompt optimizer. Ctrl+Space opens the tray overlay on the document field you are writing in. There is no API key. It is not the supply-chain product Anvyl and not Anvil. The target model chooses how the prompt is structured, then the post goes back into that field.

Anvyll overlay after capturing a populated draft

Long-form work fails in a chat box because the draft and the instructions get mixed, and because you then have to carry the answer back by hand. The overlay starts from the text already in the document. It is not a second editor and it does not keep a conversation.

What changes between the rough line and the prompt?

write a blog post announcing our windows app is moving from 1000 one-off credits to a flat 13.99 a month plan, about 600 words, its for people already using it, dont be hypey

That line already contains the word count, the audience, both prices, and the tone. A writing prompt names those as separate constraints so the model is not asked to invent a product or a length. One version, for a prose announcement:

Task: Write the announcement.
Length: about 600 words.
Audience: people already using the Windows app.
Facts: 1,000 one-off credits, then a flat 13.99 a month.
Tone: no hype adjectives.
Output: the post itself, not an outline and not a second draft.

Generate sends the prompt and any context you attached to the Anvyll service. The document stays in the local vault with your other drafts. Pricing is on the homepage: 1,000 credits once, or Unlimited at €13.99 a month after a 14-day trial.