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Social Captions

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rediumvex
social-captions

Write algorithm-optimized captions/descriptions for social media posts and reels. Supports Instagram (Reels, Feed, Carousel), TikTok, Threads, Facebook, and YouTube Shorts. The user sends material (text, image, script, competitor post, screenshot) and gets ready-to-use captions for ALL platforms at once, in English. Use when asked to "write a caption", "write a description", "caption for instagram", "описание к посту", "подпись для рилса", "описание для тикток", "caption for reels", "social media post", or any caption/description writing task. Also triggers when user sends an image, screenshot, or text and says something like "сделай описание", "напиши подпись", "caption this", "описание для этого".

Overview

Publisherrediumvex
Repositorysocial-media-caption-generator-claude
Skill namesocial-captions
Stars
144
Forks
18
Bundled files
Instructions only
LicenseMIT
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • Self-contained

    Everything the model needs lives in the instructions — no extra files to sync.

  • Open source

    Published by rediumvex on GitHub. Read the source before you install it.

Installation

Install the Social Captions AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/rediumvex/social-media-caption-generator-claude/tree/main
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/rediumvex/social-media-caption-generator-claude.git \
  .claude/skills/social-captions
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Social Captions in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Social Captions on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Social Captions is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

/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)

CategoryWords
UrgencyNow, Today, Limited, Last chance
TrustProven, Tested, Research-backed, Results
ExclusivitySecret, Hidden, Insider, Behind-the-scenes
EmotionShocking, Surprising, Honest, Raw, Real
ActionDiscover, Unlock, Transform, Master, Grab
ValueFree, 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

Frequently asked questions

What does the Social Captions AI skill do?

Write algorithm-optimized captions/descriptions for social media posts and reels. Supports Instagram (Reels, Feed, Carousel), TikTok, Threads, Facebook, and YouTube Shorts. The user sends material (text, image, script, competitor post, screenshot) and gets ready-to-use captions for ALL platforms at once, in English. Use when asked to "write a caption", "write a description", "caption for instagram", "описание к посту", "подпись для рилса", "описание для тикток", "caption for reels", "social media post", or any caption/description writing task. Also triggers when user sends an image, screens...

Why use Social Captions on TypingMind?

Because you install it once and use it with any model. Social Captions is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Social Captions in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/rediumvex/social-media-caption-generator-claude/tree/main. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Social Captions?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Social Captions?

As many as you like. As long as a model supports skills, you can use Social Captions with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Social Captions AI skill free?

Yes. It is published on GitHub by rediumvex under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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