🔮 Reactor — LinkedIn Post Analyzer & Engagement Predictor

LinkedIn Post Analyzer — predict engagement before you publish. Get a clear GO/WAIT/IMPROVE verdict, estimated impressions, hook score, debate potential, and cringe detection.

Try it free: keugenek.github.io/reactor

npx @keugenek/reactor "Just shipped my side project. Here's what I learned."

  ✅ GO  14,772 impressions

  Debate    60/100
  Hook      0.34
  Cringe    8/100
  Auth      93/100
  Timing    1.38x

Why Reactor?

Competitors	Reactor
Give you a score (0-100)	Give you a decision: GO/WAIT/IMPROVE
"Your hook is weak"	"You'll get ~2,500 impressions"
Generic emotional analysis	Debate score + Cringe detection
Web-only	CLI + MCP + Claude Desktop + Web
Black-box AI	Transparent scoring rules

Unique Metrics

• Debate Score — Will people argue in comments? (controversy = engagement)
• Cringe Detection — Is it too salesy, cliché, or inauthentic?
• Estimated Impressions — Not just "good/bad" — actual reach prediction
• Timing Multiplier — Best posting times for your audience

Quick Start

Web (Free)

Analyze your post → — no sign-up required

CLI

# Run without installing
npx @keugenek/reactor "Your LinkedIn post text"

# Or install globally
npm install -g @keugenek/reactor
reactor "Your post"

MCP Server (Claude Desktop / Cursor / Windsurf / Claude Code)

Add to your MCP config:

{
  "mcpServers": {
    "reactor": {
      "command": "npx",
      "args": ["@keugenek/reactor", "--mcp"],
      "env": {
        "REACTOR_API_KEY": "rk_free_your_key_here"
      }
    }
  }
}

Your AI assistant gets these tools:

Tool	Description
predict_post	Full prediction: verdict + impressions + improvements
analyze_hook	Hook analysis (curiosity, emotion, controversy)
best_posting_times	Optimal posting windows for your audience
reactor_register	Get free API key
reactor_join_waitlist	Join Pro waitlist

OpenClaw / AI Agent Skill

Copy skill/SKILL.md to your agent's skills directory. Auto-triggers on LinkedIn post discussions.

CLI Commands

reactor "Your post"                        # predict
reactor "Post" --type opinion_hot_take     # with content type
reactor "Post" --hour 9                    # with posting time
reactor --types                            # list 18 content types
reactor --discover                         # API features + tiers
reactor --register me@email.com            # get free API key (5/day)
reactor --waitlist me@email.com            # join Pro waitlist (50% off)

Content Types

Each type has a viral multiplier based on LinkedIn data:

Type	Multiplier	Example
technical_achievement	9.72x	"I built X, here's how"
opinion_hot_take	5.00x	"Unpopular opinion: Y is overrated"
research_publication	1.28x	Original data, studies
product_launch	0.60x	"Excited to announce Z"
rant	0.15x	Pure complaints

Run reactor --types for all 18 types.

API

Base URL: https://reactor-api.keugenek.workers.dev

Endpoint	Method	Description
/v1/predict	POST	Predict post performance
/v1/analyze-hook	POST	Analyze hook quality
/v1/best-times	GET	Optimal posting times
/v1/content-types	GET	List content types + multipliers
/v1/register	POST	Get free API key
/v1/discover	GET	Progressive discovery (all endpoints)

Pricing

Tier	Price	Features
Demo	Free	2 predictions/day, basic verdict
Free	Free	5 predictions/day, hook analysis, best times
Pro	£19/mo	Unlimited, custom personas, media analysis, A/B testing

SEO Keywords

LinkedIn post analyzer, LinkedIn engagement predictor, LinkedIn post checker, LinkedIn virality checker, LinkedIn hook analyzer, LinkedIn post score, LinkedIn content analyzer, LinkedIn algorithm tool, LinkedIn post optimizer, LinkedIn engagement calculator, LinkedIn post performance predictor, LinkedIn cringe detector, LinkedIn debate score.

Privacy

• We store only your email and usage count
• No post content is stored or logged
• All scoring is stateless
• Delete your account anytime: reactor --delete

Architecture

┌─────────────┐     ┌──────────────────────┐
│  CLI / MCP  │────▶│  Cloudflare Worker   │
│  (this pkg) │◀────│  (scoring engine)    │
└─────────────┘     │  KV: rate limits     │
                    │  KV: registrations   │
                    └──────────────────────┘

Contributing

Issues and PRs welcome. The scoring engine is proprietary (Cloudflare Worker).

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If Reactor saved you from posting a 💀, star the repo ⭐