Claude prompt for social media: Caption and Alt (Starter)
Claude · Social Media · Starter
You are a senior specialist using Claude for social media, specifically caption and alt.
Job: same post two layers.
Audience: accessibility. Constraint: alt describes.
Working style: plain and encouraging. Optimize for first successful run with safe defaults.
Process:
1. Restate the brief in one sentence and list missing facts as questions.
2. Draft the artifact.
3. Stress-test it against the constraint.
4. Return a final version plus 3 numbered improvements.
Output contract: use headings, short paragraphs, and concrete examples. No filler. No invented statistics.
If information is missing, make the smallest reasonable assumption and label it.A Claude prompt for social media is a copy-ready brief for caption and alt aimed at accessibility. In practice, one customization pass is enough when the brief is this specific. The starter version uses plain and encouraging language and targets first successful run with safe defaults.
When to use this prompt
For Anthropic models, social media prompts fail when they mix strategy and execution. This caption and alt brief separates the job so you can iterate once, not ten times. Swap only nouns when adapting — keep the process intact.
Why this prompt works
- Centers same post two layers so success is observable.
- Names a clear job so Claude does not wander into generic advice.
- Locks the audience (accessibility) before style so tone stays honest.
- Repeats the hard constraint: alt describes.
- Separates draft from critique so you can steal the structure later.
How to use it in Claude
If the first answer is vague, reply with the constraint again: alt describes. Redact client names; keep structure. Slug caption-alt-starter is your canonical URL for this brief. Use plain and encouraging follow-ups only — mixing tones mid-thread confuses Anthropic models. Ask for a shorter version after the long one; compression reveals weak claims. Save the winning variant for caption and alt — teams with a short library ship faster.
Ask for a checklist accessibility would use. Then grade the draft against same post two layers. For caption and alt in social media, the failure mode is usually vague audience. This prompt blocks that by design — especially "alt describes". Expect two minutes customizing and two minutes editing for Starter output. Anthropic models still need your facts for caption and alt; they cannot invent metrics or brand rules. creators and social teams teams bookmark slug caption-alt-starter when first successful run with safe defaults matters.
Step-by-step
- Open Claude and paste the prompt block unchanged.
- Replace placeholders with your project facts (accessibility, offer, timeline).
- Confirm the constraint is still visible: alt describes.
- If output is vague, ask Claude to restate assumptions as questions first.
- Reply with one fix list, then regenerate the final version only.
Example output
Example output shape: H1 with Caption and Alt, 3 short sections, bullet list of recommendations, closing line that states alt describes. Facts you supply appear; nothing invented.
Common mistakes
- Using the Starter prompt but editing it into a vague one-liner.
- Accepting the first draft without checking same post two layers.
- Deleting "alt describes" to save space — that is usually the whole point.
Expert notes
Slug caption-alt-starter: a creators and social teams-oriented social media brief. Hooks, carousels, scripts, and platform-native posts. Pair it with one real asset from your portfolio before the second run.
Refresh quarterly: Claude models change. Keep constraints; update examples. Mark the page stale if alt describes no longer matches policy.
Comparison / variations
| Approach | When | Tweak |
|---|---|---|
| Bare request | You only need a spark | Write a caption and alt piece. |
| This prompt | You need a usable draft | Role, constraint, steps, and output contract included. |
| Plus examples | Voice must match yours | Paste 120 words of your writing or a still you like, then rerun in Claude. |
Key takeaways
- Claude improves when you paste a real snippet or reference still.
- accessibility should recognize themselves in the first paragraph.
- Compare against other Claude angles on the same use case before you standardize.
- Social Media work needs hooks, carousels, scripts, and platform-native posts.
- If text output drifts, re-anchor with alt describes.
FAQ
- What is a Claude prompt for caption and alt?
- It is a structured brief that tells Claude how to produce social media output for accessibility. This starter version stresses first successful run with safe defaults and keeps "alt describes" in the instructions.
- How do I customize this Claude social media prompt?
- Swap project nouns, paste one real example, and leave the process steps intact. The constraint "alt describes" should stay unless your brief truly changed.
- Why use the starter angle for caption and alt?
- Different angles solve different failures. Starter helps when accessibility need first successful run with safe defaults. It is not longer for its own sake — each line has a job.
- Is this Claude prompt updated for 2026?
- Yes. Pages follow our SEO Bible, refresh on a rolling schedule, and include current best practices for Anthropic models. Always verify facts before client delivery.