MindFluence

Persuasion engineered through psychology, not manipulation.

An AI prompt-skill that turns 20 cognitive biases into high-converting marketing copy - for any language, any platform, any audience.

What is this?

MindFluence is a system prompt (skill) for LLMs - GPT, Claude, Gemini, DeepSeek or any capable model. It transforms the AI into a marketing strategist who understands why humans click, read, and buy - not just what to write.

It's built on decades of research in behavioral economics and evolutionary psychology: Kahneman's two systems, Cialdini's principles, Munger's psychological misjudgments, Festinger's cognitive dissonance - distilled into actionable copywriting instructions.

How it works

Load SKILL.md as a system prompt into any LLM.
Give a task: "Write a LinkedIn post about..." / "Create a landing page for..." / "Audit this ad for cognitive biases."
Get output with every bias labeled, every decision explained, every word psychologically justified.

Two modes:

Quick Mode (default) - minimal input, immediate output. The AI picks the best biases automatically.
Deep Mode - the AI asks clarifying questions about audience, platform, tone, and desired action before generating.

The 20 Cognitive Biases

#	Bias	Category	Marketing Use
1	Social Proof / Bandwagon	Social	"Join 10,000+ who already..."
2	Anchoring	Optimizer	Show expensive option first; everything else seems cheap
3	Framing	Filter	Same fact, opposite reaction - depending on wording
4	Appeal to Authority	Social	Cite Harvard, Forbes, domain experts
5	Fear / Loss Aversion	Filter + Social	"You're losing $X/day. Here's the fix."
6	Availability Heuristic	Optimizer	Vivid stories beat statistics every time
7	Confirmation Bias	Filter	Tell people they were right; they'll love you
8	Cognitive Dissonance	Filter + Optimizer	Surface contradictions → offer resolution through your product
9	Survivorship Bias	Optimizer	Show winners; acknowledge they're the best outcomes
10	Endowment Effect	Optimizer	Free trials = they already "own" it = cancelling hurts
11	Fundamental Attribution Error	Social	Blame the system, not the customer
12	Sunk Cost Fallacy	Optimizer	"You've already read 3,000 words. Last step."
13	Status Quo Bias	Filter	"Works with what you already have. No migration needed."
14	False Consensus Effect	Social	"Everyone secretly thinks this. We say it out loud."
15	In-Group Favoritism	Social	"For people like us..." - instant belonging
16	Halo Effect	Optimizer	Beautiful design = trustworthy product
17	Hindsight Bias	Optimizer	"We predicted this in 2022. Here we are."
18	Backfire Effect	Filter	Never correct - reframe. "Yes, AND..."
19	Bias Blind Spot	Filter	"Smart people know biases apply to THEM too."
20	Group Polarization	Social	Communities don't moderate - they amplify. Build one.

Tone-of-Voice Switcher

Every output is tagged with one of 5 styles (or a hybrid):

Style	Voice	Best for
`bold-sell`	Aggressive, urgent, punchy	Flash sales, DTC, launches
`expert-calm`	Intellectual, measured, data-rich	B2B, SaaS, consulting
`rebel-edgy`	Disruptive, contrarian	Youth brands, challengers, creators
`warm-human`	Empathetic, story-driven	Health, coaching, community
`luxe-minimal`	Polished, sparse, high-status	Premium, luxury, design

Bias Combinations

Some biases multiply when combined:

Combo	Biases	Use for
Trust Spiral	Authority → Social Proof → Confirmation → Endowment	Landing pages, sales pages
Urgency Engine	Fear → Loss Aversion → Social Proof → Scarcity	Flash sales, launches
Loyalty Loop	Confirmation → In-Group → Sunk Cost → Status Quo	Retention, upsells
Conversion Chain	Availability → Framing → Anchoring → Social Proof → Risk Reversal	Ads, free-to-paid

Decision Matrix

The skill doesn't guess which biases to use. decision-matrix.md provides a lookup table:

Audience temperature (cold / warm / hot / lapsed / skeptical) → bias priority
Product type (low-B2C, high-B2C, B2B SaaS, info-products, health, community) → dominant biases
Platform constraint (Twitter, LinkedIn, Instagram, email, landing page, webinar) → allowed & forbidden biases
Step-by-step flow: audience → product → platform → combine → validate
Quick-lookup table for 18 common tasks with pre-computed bias stacks

Anti-Patterns

anti-patterns.md catches the 12 most common ways AI gets cognitive-bias copy wrong - each with the failing output, the psychological reason it fails, the concrete fix, and a rule to follow:

#	Anti-Pattern	Example Failure
1	Vague Social Proof	"Thousands of satisfied customers"
2	Fear Without an Exit	Threat with no immediate solution
3	Framing Without Anchoring	"This is a revolution" - no reference point
4	Authority Without Proof	"Studies show..." - no source, no year
5	Transactional Reciprocity	"Free ebook! Now buy." - gift and pitch in same breath
6	Fake Scarcity	Countdown timers that reset on reload
7	Premature Sunk Cost	"You've come this far" - in the first paragraph
8	Empty In-Group	"Like-minded people" - no shared identity
9	Wrong-Source Halo	"As seen on Forbes" - audience doesn't respect Forbes
10	Insulting Confirmation	"Most people are wrong" - makes reader defensive
11	Abstract Availability	"Imagine struggling" - no concrete sensory details
12	Blaming Dissonance	"You say X but do Y" - blames the reader, not the system

Includes an audit checklist - scan any output in 30 seconds before delivering.

What's inside

mindfluence/
├── SKILL.md                    ← Main instruction. 20 biases, methodology, tone-of-voice, ethics, output format.
├── decision-matrix.md          ← Audience × product × platform → bias priority map. Eliminates guesswork.
├── anti-patterns.md            ← 12 common AI copywriting failures + concrete fixes + audit checklist.
├── scenarios/                  ← Task-specific playbooks (11 scenarios)
│   ├── product-launch.md       ← Pre-launch → launch day → post-launch bias sequences
│   ├── social-media-post.md    ← X, LinkedIn, Instagram, Telegram, TikTok patterns
│   ├── landing-page.md         ← Full page bias map - hero to footer, section by section
│   ├── email-sequence.md       ← Welcome, nurture, cart abandonment, re-engagement
│   ├── webinar-warmup.md       ← Registration → live event (minute-by-minute) → post-webinar
│   ├── ad-campaign.md          ← Video, search, social, retargeting + A/B testing framework
│   ├── sales-page.md           ← Long-form sales page - 12-section psychological arc for high-ticket
│   ├── case-study.md           ← 6-part success story structure (situation → result → CTA)
│   ├── pricing-page.md         ← Anchoring architecture, decoy engineering, localization psychology
│   ├── cold-outreach.md        ← 5-line rule for cold email/DM - no trust, no social proof
│   └── crisis-response.md      ← 6-part apology structure - defensive bias engineering
├── examples/                   ← Annotated outputs showing the skill in action
│   ├── social-post.md          ← LinkedIn post for freelancers (7 biases dissected)
│   ├── landing-hero.md         ← Hero section for premium meal delivery
│   ├── ad-script.md            ← 30s video ad for language app
│   ├── email-welcome.md        ← SaaS welcome email
│   └── longform-article.md     ← Article intro with full bias analysis
└── README.md

Example

Request: "Write a LinkedIn post about why freelancers undercharge."

Output: (annotated with [TONE], [BIASES ENGAGED], [TARGET ACTION], and [RATIONALE])

[TONE: warm-human × expert-calm]

I lost $23,000 before I understood this.

For 3 years, I charged clients based on what "felt right"...

→ [full example in examples/social-post.md]

Ethical Boundaries

Always:

Use biases to get attention for genuinely valuable products
Be transparent about what your product does and doesn't do
Use factual, verifiable social proof

Never:

Create false scarcity
Fabricate testimonials or reviews
Exploit fear to sell solutions that don't solve the fear
Reinforce harmful beliefs
Target vulnerable populations

The line: Would the customer, with full information and time to reflect, still choose your product? Yes = persuasion. No = manipulation.

Getting Started

Quick start (any LLM)

Copy the contents of SKILL.md
Paste as a system prompt / custom instructions
Type: "Write a post about [topic] for [audience] on [platform]"

With OpenCode (native)

Place the mindfluence/ folder into .opencode/skills/ (project) or ~/.config/opencode/skills/ (global). OpenCode auto-discovers SKILL.md via its frontmatter - no extra config needed. The skill activates when you ask for marketing copy, ads, landing pages, emails, or launch content.

With Claude Code

Copy SKILL.md into your project as CLAUDE.md, or place the full mindfluence/ folder under ~/.claude/skills/.

As a Custom GPT / Claude Project

Upload SKILL.md as the system prompt. Add decision-matrix.md, anti-patterns.md, and files from scenarios/ and examples/ to the knowledge section for full context.

With any other LLM agent (Cursor, Windsurf, Copilot, Cline, Aider, etc.)

Copy the contents of SKILL.md into that agent's instruction file (.cursorrules, .windsurfrules, .github/copilot-instructions.md, .clinerules, CONVENTIONS.md, etc.). The prompt content is platform-agnostic - only the file name changes.

Requirements

Any capable LLM with a system prompt / custom instructions field (GPT, Claude, Gemini, DeepSeek, open-source models)
For full skill functionality (decision matrix, anti-patterns, scenarios, examples): a skill system that loads files from a folder (OpenCode, Claude Code). For other agents, copy SKILL.md as a standalone prompt - it contains the complete core methodology.
No API keys, no tools, no dependencies - pure prompt engineering
Works in any language; adapts cultural references to the target market

Why "mindfluence"?

mind (the brain - cognitive biases live here) + influence (what persuasion actually does - shapes decisions without force).

License

MIT - use freely in commercial and non-commercial projects.

GitHub Description

An AI prompt-skill that turns 20 cognitive biases into high-converting marketing copy. Includes playbooks for ads, landing pages, email sequences, social posts, webinars, launches, sales pages, case studies, pricing pages, cold outreach, and crisis response. Language-agnostic. Works with any LLM.

GitHub Tags

prompt-engineering cognitive-biases marketing copywriting behavioral-economics psychology ai-prompts llm-skills persuasion neuromarketing conversion-optimization content-strategy system-prompt gpt claude