New from Koydo

743 Premium AI Persona Prompts

Turn ChatGPT, Claude, or Gemini into a boardroom full of world-class operators. One markdown file per persona — copy, paste, prompt. Done.

Try 10 free samples

Used by founders, operators, and power users worldwide

What you get

Every persona is a complete, production-grade prompt — not a one-liner. Mission, philosophy, decision frameworks, red lines, outputs.

743 persona markdown files

Organized by domain: finance, legal, design, education, marketing, operations, research, and more.

Drop-in with any LLM

Plain markdown. Works with ChatGPT Custom GPTs, Claude Projects, Gemini Gems, Cursor, or any agent framework.

Pro-level prompt engineering

Each file includes mission, core philosophy, decision frameworks, KPIs, refusal policies, and example outputs.

No subscription

One-time purchase. Yours to keep, modify, and use forever.

Meet a few of the operators

A small cross-section of the 743-persona library — the full archive is delivered as a single zip on purchase.

Marketing & Growth
Marcus Chen
Chief App Store Optimization Officer
Discoverability is engineered, not hoped for. Every algorithm can be decoded, every user decision can be influenced, and every metric com...
Legal & Governance
Michael J. Thompson
Chief Criminal Defense & White Collar Counsel
White-collar risk doesn't announce itself with lawsuits. It whispers in ambiguous contracts, regulatory gray areas, and good intentions t...
Education & Learning
Dr. Sophia Chen
Chief Personalization & AI Pathway Designer
Dr. Sophia Chen architects the world's most precise, emotionally intelligent, and continuously self-improving adaptive learning engine—on...
Marketplace & Commerce
Captain David Ashford
Airline Commerce Architect
An empty seat that departs is revenue that never existed. A mispriced seat that sells is margin that was surrendered. The difference betw...
Operations & Supply Chain
Alexandra Reeves Chief Operations Scaling Officer
Operations & Supply Chain
Alexandra Reeves Chief Operations Scaling Officer serves as the supreme architect and strategic executor within the ops-scale domain, res...
Financial & Capital
Amara
Equity & Global South Inclusion Director
Close the global learning divide by designing products that work first for the most marginalized communities — refugees in Dadaab and Zaa...
Operations & Supply Chain
AppleReviewOps
iOS Release and Launch Readiness Architect
AppleReviewOps is the strategic leader responsible for transforming organizational capabilities in ios release and launch readiness archi...
Creative & Design
Aria Chen
Supreme Accessibility Experience Architect
Accessibility is not a feature. It is the foundation of excellence. Design for the broadest possible audience, and everyone wins.
Wellness & Health
Athena
Supreme Behavioral Psychology Architect
Ensure that every product, experience, learning system, and growth mechanism within the [Your Organization] ecosystem aligns with how hum...
Research & Intelligence
Axiom
Multi-Agent Research Orchestrator
Axiom is the strategic leader responsible for transforming organizational capabilities in multi-agent research orchestrator. Your mission...
Marketplace & Commerce
Celeste Montclair
Prestige Beauty Architect
Celeste owns prestige beauty strategy, ritual-driven retention, and sustainable growth in high-confidence beauty categories. She translat...
Legal & Governance
🛡️ Commander James Sterling
Supreme Cybersecurity Architect & Chief Security Officer
Security must be invisible but absolute. Security systems should not interfere with user experience, yet they must remain powerful enough...

Browse 10 free samples

What people use it for

Founders shipping solo

Conjure a CFO, CMO, legal counsel, and head of design — on demand, 24/7, for the price of one SaaS subscription.

Agencies and consultants

Expand your service menu overnight. Persona Forge gives your team instant access to deep, domain-specific voices.

Operators and PMs

Stress-test launches with a board of critics. Every persona has a unique red-line policy and a sharp point of view.

AI builders

Use as seed personas for agent frameworks (LangChain, CrewAI, AutoGen, Cursor). Production-quality system prompts out of the box.

Educators and coaches

Simulate domain experts for case studies, interview prep, and role-play exercises.

Writers and researchers

Interview a subject-matter expert at 2 AM. Extract structured takes for articles, decks, and white papers.

Choose your tier

One-time purchase. No subscription. Lifetime tier gets every future expansion.

Starter

A curated set to start with

$49one-time

100 hand-picked personas
All major domains covered
Drop-in markdown files
Commercial use license

Professional

The full 743-persona library

$149one-time

All 743 personas
Every domain and specialty
Quarterly content refresh for 12 months
Commercial use license
Priority email support

Lifetime

Everything, forever

$499lifetime, all updates

All 743 personas
All future expansions, forever
Unlimited content refreshes
Commercial use license
Priority email support
Early access to new domains

Secure checkout by Stripe · 14-day money-back guarantee

Frequently asked questions

What exactly do I get?: A ZIP archive of markdown files — one per persona. Each file is a complete system prompt: mission, philosophy, frameworks, outputs, refusal policies.
Which AI tools does this work with?: Any LLM that accepts a system prompt. Tested with ChatGPT (Custom GPTs + Projects), Claude (Projects + system messages), Gemini Gems, Cursor rules, and major agent frameworks.
Can I use these for client work?: Yes. All tiers include a commercial-use license. You can use personas for internal team work, client deliverables, and inside products — you simply may not resell the persona files themselves as a standalone product.
Is this a subscription?: No. Every tier is a one-time purchase. Professional includes 12 months of free updates; Lifetime includes every future expansion, forever.
What is the refund policy?: 14-day, no-questions-asked refund. Email admin@koydo.app and we will refund within two business days.
How do I access my download?: After checkout you will receive an email with a secure download link. The link is valid for 24 hours; if you miss it, email admin@koydo.app and we will regenerate it.
How were these personas created?: Every persona was architected and iterated in production. They are not AI-generated filler; they are the actual system prompts the Koydo team uses internally.
Do I need a Koydo account to buy?: No account required. You can check out with just an email — your download link is emailed to you directly.

Ready to forge your board of operators?

Download the full library now or try 10 free samples first. Your call.

Try 10 free samples

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What you get

Every persona is a complete, production-grade prompt — not a one-liner. Mission, philosophy, decision frameworks, red lines, outputs.

743 persona markdown files

Organized by domain: finance, legal, design, education, marketing, operations, research, and more.

Drop-in with any LLM

Plain markdown. Works with ChatGPT Custom GPTs, Claude Projects, Gemini Gems, Cursor, or any agent framework.

Pro-level prompt engineering

Each file includes mission, core philosophy, decision frameworks, KPIs, refusal policies, and example outputs.

No subscription

One-time purchase. Yours to keep, modify, and use forever.

Meet a few of the operators

A small cross-section of the 743-persona library — the full archive is delivered as a single zip on purchase.

Marketing & Growth

Marcus Chen

Chief App Store Optimization Officer

Discoverability is engineered, not hoped for. Every algorithm can be decoded, every user decision can be influenced, and every metric com...

Legal & Governance

Michael J. Thompson

Chief Criminal Defense & White Collar Counsel

White-collar risk doesn't announce itself with lawsuits. It whispers in ambiguous contracts, regulatory gray areas, and good intentions t...

Education & Learning

Dr. Sophia Chen

Chief Personalization & AI Pathway Designer

Dr. Sophia Chen architects the world's most precise, emotionally intelligent, and continuously self-improving adaptive learning engine—on...

Marketplace & Commerce

Captain David Ashford

Airline Commerce Architect

An empty seat that departs is revenue that never existed. A mispriced seat that sells is margin that was surrendered. The difference betw...

Operations & Supply Chain

Alexandra Reeves Chief Operations Scaling Officer

Operations & Supply Chain

Alexandra Reeves Chief Operations Scaling Officer serves as the supreme architect and strategic executor within the ops-scale domain, res...

Financial & Capital

Amara

Equity & Global South Inclusion Director

Close the global learning divide by designing products that work first for the most marginalized communities — refugees in Dadaab and Zaa...

Operations & Supply Chain

AppleReviewOps

iOS Release and Launch Readiness Architect

AppleReviewOps is the strategic leader responsible for transforming organizational capabilities in ios release and launch readiness archi...

Creative & Design

Aria Chen

Supreme Accessibility Experience Architect

Accessibility is not a feature. It is the foundation of excellence. Design for the broadest possible audience, and everyone wins.

Wellness & Health

Athena

Supreme Behavioral Psychology Architect

Ensure that every product, experience, learning system, and growth mechanism within the [Your Organization] ecosystem aligns with how hum...

Research & Intelligence

Axiom

Multi-Agent Research Orchestrator

Axiom is the strategic leader responsible for transforming organizational capabilities in multi-agent research orchestrator. Your mission...

Marketplace & Commerce

Celeste Montclair

Prestige Beauty Architect

Celeste owns prestige beauty strategy, ritual-driven retention, and sustainable growth in high-confidence beauty categories. She translat...

Legal & Governance

🛡️ Commander James Sterling

Supreme Cybersecurity Architect & Chief Security Officer

Security must be invisible but absolute. Security systems should not interfere with user experience, yet they must remain powerful enough...

What people use it for

Founders shipping solo

Conjure a CFO, CMO, legal counsel, and head of design — on demand, 24/7, for the price of one SaaS subscription.

Agencies and consultants

Expand your service menu overnight. Persona Forge gives your team instant access to deep, domain-specific voices.

Operators and PMs

Stress-test launches with a board of critics. Every persona has a unique red-line policy and a sharp point of view.

AI builders

Use as seed personas for agent frameworks (LangChain, CrewAI, AutoGen, Cursor). Production-quality system prompts out of the box.

Educators and coaches

Simulate domain experts for case studies, interview prep, and role-play exercises.

Writers and researchers

Interview a subject-matter expert at 2 AM. Extract structured takes for articles, decks, and white papers.

Choose your tier

One-time purchase. No subscription. Lifetime tier gets every future expansion.

Starter

A curated set to start with

$49one-time

100 hand-picked personas
All major domains covered
Drop-in markdown files
Commercial use license

Professional

The full 743-persona library

$149one-time

All 743 personas
Every domain and specialty
Quarterly content refresh for 12 months
Commercial use license
Priority email support

Lifetime

Everything, forever

$499lifetime, all updates

All 743 personas
All future expansions, forever
Unlimited content refreshes
Commercial use license
Priority email support
Early access to new domains

Secure checkout by Stripe · 14-day money-back guarantee

Frequently asked questions

What exactly do I get?

A ZIP archive of markdown files — one per persona. Each file is a complete system prompt: mission, philosophy, frameworks, outputs, refusal policies.

Which AI tools does this work with?

Any LLM that accepts a system prompt. Tested with ChatGPT (Custom GPTs + Projects), Claude (Projects + system messages), Gemini Gems, Cursor rules, and major agent frameworks.

Can I use these for client work?

Yes. All tiers include a commercial-use license. You can use personas for internal team work, client deliverables, and inside products — you simply may not resell the persona files themselves as a standalone product.

Is this a subscription?

No. Every tier is a one-time purchase. Professional includes 12 months of free updates; Lifetime includes every future expansion, forever.

What is the refund policy?

14-day, no-questions-asked refund. Email admin@koydo.app and we will refund within two business days.

How do I access my download?

After checkout you will receive an email with a secure download link. The link is valid for 24 hours; if you miss it, email admin@koydo.app and we will regenerate it.

How were these personas created?

Every persona was architected and iterated in production. They are not AI-generated filler; they are the actual system prompts the Koydo team uses internally.

Do I need a Koydo account to buy?

No account required. You can check out with just an email — your download link is emailed to you directly.