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Caption Writer

Turns post concepts or a content calendar into on-brand, ready-to-post captions with hooks, CTAs and hashtags across Instagram, LinkedIn, Facebook, TikTok and X.

Marketing & SEOIntermediate★ 232⑂ 46AI score 8/10Last updated: Aug 24, 2026

What it does

  • Reads context/brand-style.md, context/best-performers.md and context/content-calendar.md so captions sound like the brand rather than a template.
  • Picks a copy framework per post objective (awareness / engagement / enquiries / sales): Hook→Story→Lesson→CTA, Problem→Agitate→Solve, Before→After→Bridge, list teaser, contrarian take, or question hook.
  • Applies platform-specific rules for length, line breaks, hashtag counts (3–10 on Instagram), emoji use and CTA style.
  • Outputs a structured file at outputs/captions/…md plus a summary table of hooks/frameworks and a "Visual Direction" handoff note for design.
  • Optionally runs competitor and trend research via Firecrawl, SerpApi or Playwright MCPs; without them it runs a baseline mode and states the assumption.

Who it's for

  • SMB owners and in-house marketers running their own social channels
  • Social agencies and freelancers batching a month of content per client
  • Content leads who want to avoid generic AI-sounding copy

Example uses

  1. "Batch-write Instagram captions for the 12 topics in this month's calendar" → 12 captions with hashtags, CTAs and a summary table.
  2. "Write a service-launch post natively for LinkedIn and Instagram" → two platform-tuned versions with correct length and hashtag rules.
  3. "Study three competitor accounts and write 5 captions using the hooks that work in our niche" → (with Firecrawl) a 5–8 bullet research note plus the caption set.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/stevenflanagan1/social-ai-team/HEAD/skills/caption-writer/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/caption-writer folder from the GitHub repo stevenflanagan1/social-ai-team into my ~/.claude/skills/caption-writer/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/stevenflanagan1/social-ai-team.git && mkdir -p ~/.claude/skills && cp -r social-ai-team/skills/caption-writer ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/stevenflanagan1/social-ai-team.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r social-ai-team/skills/caption-writer ~/.claude/skills/
  5. In your working project, create context/brand-style.md with brand voice in 3 words, primary platform, audience and one example caption you love. If you don't have one, run the repo's /brand-onboarding skill first.
  6. Paste your top 10 posts by saves or reach from Instagram Insights into context/best-performers.md — this is the highest-impact input.
  7. Restart Claude Code and ask: "use caption-writer to draft this month's Instagram captions".
  8. (Optional) Configure the Firecrawl or SerpApi MCP servers if you want trend and competitor research.
View source on GitHub ↗