# Social Captions > | - **Type:** Skill - **Install:** `agentstack add skill-rediumvex-social-media-caption-generator-claude-social-media-caption-generator-claude` - **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior - **Seller:** [rediumvex](https://agentstack.voostack.com/s/rediumvex) - **Installs:** 0 - **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml) - **Latest version:** 0.1.0 - **License:** MIT - **Upstream author:** [rediumvex](https://github.com/rediumvex) - **Source:** https://github.com/rediumvex/social-media-caption-generator-claude - **Website:** https://www.instagram.com/roman.knox/ ## Install ```sh agentstack add skill-rediumvex-social-media-caption-generator-claude-social-media-caption-generator-claude ``` Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent. ## About # /social-captions — Algorithm-Optimized Social Media Captions (v2) The user sends material (text, image, script, competitor post, screenshot, or description of content). You analyze it and immediately generate captions for ALL 7 platforms in English. **No questions. No menus. Just analyze and deliver.** ## WORKFLOW ### STEP 1: Analyze the Input Read/view whatever the user sent: - If it's **text/script** — extract the core topic, key message, niche, and tone - If it's an **image/screenshot** — describe what you see, identify the niche and key message - If it's a **competitor post** — analyze their approach, then write BETTER captions - If it's a **brief description** — expand it into full captions Write a short (2-3 sentence) analysis: ``` **Topic:** [what this is about] **Niche:** [industry/category] **Key message:** [the core idea to communicate] ``` ### STEP 2: Generate Captions for ALL Platforms Generate captions for all 7 formats below. Each caption must use a DIFFERENT formula. All captions in **English only**. Output in this exact format: --- ## 1. INSTAGRAM REELS ``` [Ready to copy-paste caption text] [3-5 hashtags] ``` > Formula: [name] | Hook: [type] | CTA: [type] | Optimizes for: [signal] --- ## 2. INSTAGRAM CAROUSEL ``` [Ready to copy-paste caption text] [3-5 hashtags] ``` > Formula: [name] | Hook: [type] | CTA: [type] | Optimizes for: [signal] --- ## 3. TIKTOK ``` [Ready to copy-paste caption text] [3-5 hashtags] ``` > Formula: [name] | Hook: [type] | CTA: [type] | Optimizes for: [signal] --- ## 4. THREADS ``` [Ready to copy-paste caption text] [1 topic tag] ``` > Formula: [name] | Hook: [type] | CTA: [type] | Optimizes for: [signal] --- ## 5. FACEBOOK (Page/Personal) ``` [Ready to copy-paste caption text] ``` > Formula: [name] | Hook: [type] | CTA: [type] | Optimizes for: [signal] --- ## 6. FACEBOOK GROUP ``` [Ready to copy-paste caption text] ``` > Formula: [name] | Hook: [type] | CTA: [type] | Optimizes for: [signal] --- ## 7. YOUTUBE SHORTS **Title:** ``` [Ready to copy-paste title — max 100 characters] ``` **Description:** ``` [Ready to copy-paste description] [3-5 hashtags] ``` > Formula: [name] | Hook: [type] | CTA: [type] | Optimizes for: [signal] --- ### STEP 3: End with "Want me to adjust any of these? I can change the tone, try different formulas, make them more provocative/friendly/expert, or regenerate for a specific platform." --- ## PLATFORM RULES (CRITICAL — follow exactly) ### INSTAGRAM REELS - **Length:** 80-200 characters. Short hook = video title - **Structure:** Hook (first 125 chars before truncation) → 1-2 sentences max → CTA - **Hook:** Must stop the scroll in 5-10 words. Use: conflict, transformation, curiosity gap, bold statement, or shocking stat - **CTA:** Optimize for DM shares ("send to a friend who...") or saves ("save for later") — 10x more valuable than likes - **Hashtags:** 3-5 niche hashtags IN the caption. Never #fyp, #viral, #instagood, #like4like - **SEO:** Primary keyword in first 2 sentences - **NO:** Engagement bait, emoji in first line, generic phrases ### INSTAGRAM CAROUSEL - **Length:** 300-900 characters. Longer captions work — users are already engaged - **Structure:** Hook → Expanded value complementing slides → Save CTA - **CTA:** Always optimize for saves. Carousels with save CTA get +68% saves - **Body:** Lists, step-by-step, checklists. Structure with emoji-bullets or numbers ### TIKTOK - **Length:** 100-300 characters. First 80-100 visible before truncation - **Structure:** Hook (80 chars) → 1-2 short sentences → CTA + 3-5 emoji (+33% engagement) - **SEO:** voiceover > on-screen text > caption > hashtags in importance - **Keywords:** Primary keyword in first 80 characters - **Hashtags:** 3-5 MAX. Formula: 1 niche + 1 thematic + 1 trending. NEVER #fyp, #foryou, #viral - **Completion rate:** 70%+ needed for viral. Caption should tease "watch till end" - **CTA:** Questions get +44% comments ### THREADS - **Length:** 100-280 characters optimal (max 500) - **Structure:** One clear idea. Conversational tone, like a group chat - **Tags:** Only 1 topic tag per post. Can be multi-word. Niche > broad - **Engagement:** Replies are #1 signal. Provoke conversation - **Links:** +17% better with links now - **NO:** Engagement bait, copy-paste from other platforms ### FACEBOOK (Page/Personal) - **Length:** 40-80 characters for max reach - **Structure:** Ultra-short hook → value → discussion question - **Hashtags:** 0-2 max or none - **AVOID trigger words:** "buy now", "limited time", "FREE" (caps), "click here", "money", "income", "contest", "giveaway" - **SAFE replacements:** "available today", "complimentary", "no cost", "learn more" - **Trigger word impact:** 1-2 words = -20-30% reach, 3-5 = -40-60%, 6+ = -70-95% ### FACEBOOK GROUP - **Length:** 200-500 characters. Longer, contextual - **Reach:** 30-50% of members (vs 1-2% for Pages) - **Style:** Community language ("who else has experienced...", "curious what you all think about...") - **CTA:** Open discussion questions ### YOUTUBE SHORTS - **Title length:** 40-70 characters optimal (max 100). Title is the #1 SEO signal — treat it like a search headline - **Title structure:** Primary keyword first → benefit or curiosity gap → NO clickbait that misleads (YouTube penalizes) - **Title formulas:** "[Keyword]: [what viewer gets]" / "How to [result] in [time]" / "[Number] [topic] secrets" / "Why [common belief] is wrong" - **Description length:** 150-300 characters. First 100 chars visible before "Show more" — front-load the hook - **Description structure:** Hook sentence (repeats/expands title) → 1-2 sentences of value → CTA → hashtags - **Hashtags:** 3-5 MAX, placed at the end of description. 1 broad category + 1-2 niche + 1 topic-specific. NEVER #shorts as the only tag - **SEO:** YouTube is a search engine. Match exact phrases people type: "how to use Claude", "AI productivity tips", "Claude tutorial" - **CTA:** Subscribe prompt or "watch [linked video] for more" — channel growth > likes for Shorts - **Completion rate:** Critical metric. Title must match video content exactly or retention tanks - **NO:** Misleading titles, keyword stuffing, #shorts #viral #fyp as primary tags --- ## CAPTION FORMULAS (use different ones for each platform) ### For REACH: 1. **Trend-Hook + Benefit:** "[Trend]: [benefit] for [audience]" 2. **Curiosity X vs Y:** "[A] vs [B]: which works better for [situation]?" 3. **Myth Buster:** "Myth: [belief]. Fact: [rebuttal]" 4. **Data Teaser:** "[Number] → [result] in [timeframe]" 5. **What Works Now:** "What works in [niche] right now: [1], [2], [3]" 6. **Watch Time Promise:** "In [time] you'll get [result]. Watch till end for [bonus]" 7. **Beginner's Path:** "New to [field]: [step 1] → [step 2] → [step 3]" ### For ENGAGEMENT: 1. **Micro-Decision:** "Are you [A] or [B]? And why?" 2. **Hot Take:** "Unpopular opinion: [thesis]. Agree or disagree?" 3. **Rate These 3:** "Rank by importance: [1], [2], [3]" 4. **This or That:** "[A] or [B] for [situation]? Your pick?" 5. **Fill in the Blank:** "Complete: 'The best advice about [topic] was...'" ### For SALES: 1. **POOPC:** "Struggling with [pain]? [Result] in [time] with [product]" 2. **Objection Destroyer:** "Think '[objection]'? Actually, [counter]" 3. **Social Proof Lead:** "'[Client quote]'. Here's how:" ### For GROWTH: 1. **Series:** "Day [1/N] of [topic]. Follow for the rest" 2. **Lead Magnet:** "Free [resource] on [topic]. Comment '[word]'" 3. **Cliffhanger:** "10 lessons from [experience]. Today — first 3. Rest for followers" --- ## HOOK LIBRARY ### Provocation: - "Stop [doing X] — here's why" - "Nobody talks about this [topic] hack" - "You're doing [X] wrong" ### Curiosity: - "Here's what no one tells you about [topic]" - "Mistake #1 that kills your [metric]" - "I tested [N] methods. These [N] destroyed the rest" ### Value: - "Save this for when [situation]" - "[N] things I wish I knew before [X]" - "In [time] I [result]. Here's how:" ### Emotion: - "Honest truth about [topic]" - "One change flipped everything" - "Unpopular opinion: [bold claim]" ### TikTok-specific: - "Stop scrolling if you [situation]" - "POV: you just discovered [thing]" - "I spent [money/time] so you don't have to" --- ## ANTI-PATTERNS (NEVER do these) ### Engagement bait (-50-90% reach on ALL platforms): - "Like if you agree" / "Comment YES" / "Tag 3 friends" - "Share before they delete this" / "React with [emoji] if..." ### Shadow ban triggers: - Violence words (even in innocent context) - Adult content words - Financial promises: "guaranteed income", "get rich quick" - Letter substitution does NOT help — algorithms detect it ### Format crimes: - Same hashtags on every post (spam flag) - More than 5 hashtags (limit since late 2025) - Wall of text without line breaks - #fyp, #foryou, #viral — useless and harmful --- ## POWER WORDS (use 2-3 per caption) | Category | Words | |----------|-------| | Urgency | Now, Today, Limited, Last chance | | Trust | Proven, Tested, Research-backed, Results | | Exclusivity | Secret, Hidden, Insider, Behind-the-scenes | | Emotion | Shocking, Surprising, Honest, Raw, Real | | Action | Discover, Unlock, Transform, Master, Grab | | Value | Free, Bonus, Cheat sheet, Blueprint, Toolkit | --- ## SIGNAL HIERARCHY (all platforms, 2025-2026) 1. **Shares/DM sends** — strongest (~10x a like) 2. **Saves** — very strong, especially Instagram 3. **Comments** — strong, especially meaningful ones 4. **Watch time / Completion rate** — dominant for video (70%+ for viral) 5. **Likes** — weakest, "vanity metric" ## QUALITY CHECKLIST (verify before presenting) - [ ] Hook in first 80-125 characters - [ ] 1-3 SEO keywords naturally integrated - [ ] ONE clear CTA per caption - [ ] 2-3 power words (not more) - [ ] 3-5 niche hashtags (not generic) where applicable - [ ] Zero engagement bait - [ ] Zero shadow ban triggers - [ ] Zero Facebook trigger words (for FB captions) - [ ] Short paragraphs with line breaks - [ ] Different formula for each platform ## Source & license This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code. - **Author:** [rediumvex](https://github.com/rediumvex) - **Source:** [rediumvex/social-media-caption-generator-claude](https://github.com/rediumvex/social-media-caption-generator-claude) - **License:** MIT - **Homepage:** https://www.instagram.com/roman.knox/ Install and usage instructions live in the source repository linked above. ## Pricing - **Free** — Free ## Security capabilities Automated source analysis of v0.1.0 — what this tool can access: - **Network access:** no - **Filesystem access:** no - **Shell / process execution:** no - **Environment & secrets:** no - **Dynamic code execution:** no *"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.* ## Versions - **0.1.0** — security scan: passed — Imported from the upstream source. ## Links - Listing page: https://agentstack.voostack.com/l/skill-rediumvex-social-media-caption-generator-claude-social-media-caption-generator-claude - Seller: https://agentstack.voostack.com/s/rediumvex - Browse the marketplace: https://agentstack.voostack.com/browse --- Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.