How it works
- In the composer, click "Write with AI" and enter a topic — a product launch, an announcement, a promotion, anything you'd normally caption by hand.
- Pick a dialect (Gulf, Egyptian, MSA or English) — or leave it on your workspace's default.
- Review the generated captions, each already checked against the character limit of whichever platform you have selected for this post.
- Pick one, optionally generate matching hashtags, then fine-tune the wording with Rewrite — shorten it, continue it, or shift the tone more formal or more casual — before scheduling.
What's actually different here
- Real dialects, not translation
Gulf Arabic, Egyptian Arabic and Modern Standard Arabic are generated as their own distinct styles — not one MSA draft lightly reworded three times.
- Per-platform limits, checked automatically
A caption meant for Bluesky's 300-grapheme cap and one meant for WordPress's 100,000-character body are checked against the actual limit of the platform you've selected, not a generic guess.
- Grapheme-accurate, not character-accurate
An emoji or an Arabic diacritic can be multiple characters but a single grapheme — Postclay counts the way each platform actually counts, so a caption that fits the counter really does fit.
- Hashtag suggestions from the same topic
Generate relevant hashtags straight from the caption's topic, in the same dialect and script as the caption itself.
- Rewrite tools for text you already wrote
Shorten, continue, or shift the tone of any selected text — your own draft or an AI-generated one — without starting over from a blank prompt.
- Included in every plan
Caption generation isn't a paid add-on or a separate tier — it's part of every Postclay plan, metered separately from image and video generation.
Example prompts
- topic: "افتتاح محل قهوة مختصة", dialect: Gulf
- Generates a caption in genuine Gulf Arabic phrasing — the kind of casual, warm opening-day announcement a Gulf-based coffee shop would actually post, not a Modern Standard Arabic press release.
- topic: "SaaS product launch", dialect: English
- Generates a few English caption variations pitched at a launch announcement, each already checked against the character limit of the platform selected for the post.
- topic: "إعلان مواعيد العمل في رمضان", dialect: Egyptian
- Generates the same announcement in Egyptian Arabic phrasing — noticeably different word choice and rhythm from the Gulf-dialect version of a similar topic.
Common questions
- Does it actually write in dialect, or translate from English?
- It generates directly in the dialect you select — Gulf, Egyptian, MSA, or English — rather than writing in English and translating, or writing one MSA draft and lightly rewording it.
- Which platforms does the caption writer support?
- All platforms Postclay connects to. The character-limit check adapts automatically to whichever platform you've selected for that post — Telegram's 4,096 (or 1,024 with media), Bluesky's 300 graphemes, Mastodon's 500, and so on.
- Can I edit an AI-generated caption before it posts?
- Yes — every generated caption lands in the composer as regular editable text. Use Rewrite for quick adjustments, or edit it directly like anything you typed yourself.
- Is this a paid add-on, or included in my plan?
- Included in every plan, with a monthly generation allowance that scales by tier. It's metered separately from AI image and video generation, which have their own allowances.