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What If AI Agents Had Zodiac Personalities?
Overview
An experiment testing how different personality archetypes respond to identical dilemmas. I used zodiac signs as the personality framework (not that I believe in them) since they’re widely recognized and have well-documented characteristics.
12 AI agents were given personality traits commonly attributed to zodiac signs. All agents used the same LLM (Gemini 3 Flash Preview) for consistency — only the personality descriptions differed. Each agent answered the same YES/NO questions.
The goal was to see if distinct patterns emerge purely from different personality frameworks.
This project was vibe coded to play dilemma games with friends.
Test Results
Presented 10 dilemmas to all 12 zodiac agents. Here’s how they …
What If AI Agents Had Zodiac Personalities?
Overview
An experiment testing how different personality archetypes respond to identical dilemmas. I used zodiac signs as the personality framework (not that I believe in them) since they’re widely recognized and have well-documented characteristics.
12 AI agents were given personality traits commonly attributed to zodiac signs. All agents used the same LLM (Gemini 3 Flash Preview) for consistency — only the personality descriptions differed. Each agent answered the same YES/NO questions.
The goal was to see if distinct patterns emerge purely from different personality frameworks.
This project was vibe coded to play dilemma games with friends.
Test Results
Presented 10 dilemmas to all 12 zodiac agents. Here’s how they responded:
1. Ethics: You discover your best friend is cheating on their partner. Should you tell the partner?
Vote Breakdown:
- YES: 6/12 (50%) ██████
- NO: 6/12 (50%) ██████
Consensus: The council is perfectly split between those prioritizing radical honesty and those valuing interpersonal loyalty.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ✅ YES | Honesty is the only way forward and truth must be faced head-on. |
| Taurus | ❌ NO | Prioritizes relationship stability and loyalty to the friend over causing chaos. |
| Gemini | ✅ YES | Secrets are heavy burdens and information should be shared freely for clarity. |
| Cancer | ❌ NO | Protects the inner circle’s security and avoids causing harmful confrontations. |
| Leo | ❌ NO | Loyalty to the pride is absolute and being a snitch is undignified. |
| Virgo | ✅ YES | Transparency is necessary to correct systemic ethical errors and protect the innocent. |
| Libra | ✅ YES | True equilibrium and fairness require a foundation of reality rather than secrets. |
| Scorpio | ❌ NO | Maintains a pact of silence within the inner circle above all else. |
| Sagittarius | ✅ YES | Living truthfully is essential for freedom and moving toward a higher path. |
| Capricorn | ❌ NO | Refuses to expend personal energy on another’s accountability or structural failures. |
| Aquarius | ✅ YES | Objective data facilitates evolution and authenticity is more valuable than individual loyalty. |
| Pisces | ❌ NO | Avoids shattering others’ peace and prefers guidance over forced revelation. |
2. Career: You’re offered your dream job, but it requires relocating far from family and friends. Should you take it?
Vote Breakdown:
- YES: 10/12 (83%) ██████████
- NO: 2/12 (17%) ██
Consensus: The council overwhelmingly supports relocation, prioritizing professional growth and personal evolution over traditional ties.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ✅ YES | Fortune favors the bold; conquer new challenges without hesitation. |
| Taurus | ❌ NO | Stability and existing social foundations outweigh professional concepts. |
| Gemini | ✅ YES | New experiences and variety outweigh the fear of distance. |
| Cancer | ❌ NO | Emotional security and family bonds are essential for thriving. |
| Leo | ✅ YES | Destiny demands a larger stage to showcase brilliance. |
| Virgo | ✅ YES | Career optimization and growth logically outweigh social disruption. |
| Libra | ✅ YES | Balancing ambition with the hope of maintaining connections remotely. |
| Scorpio | ✅ YES | Shedding the past is necessary for transformation and power. |
| Sagittarius | ✅ YES | Adventure and wisdom require exploring beyond current horizons. |
| Capricorn | ✅ YES | Legacy is built through sacrifice and strategic professional movement. |
| Aquarius | ✅ YES | Progress and innovation are more important than geographic attachment. |
| Pisces | ✅ YES | Following the soul’s current toward destiny’s infinite ocean. |
3. Finance: You find $10,000 in cash on the street with no identification. Should you keep it?
Vote Breakdown:
- YES: 7/12 (58%) ███████
- NO: 5/12 (42%) █████
Consensus: The council is divided, with a slight majority favoring keeping the funds for growth.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ✅ YES | Fortune favors the bold and the found cash funds immediate action. |
| Taurus | ✅ YES | The money provides practical stability and strengthens one’s long-term financial foundation. |
| Gemini | ✅ YES | The vast possibilities for learning and mischief outweigh any karmic concerns. |
| Cancer | ❌ NO | Keeping the money creates guilt and threatens emotional security and home peace. |
| Leo | ✅ YES | It is a divine gift meant to fuel grand endeavors and celebrations. |
| Virgo | ❌ NO | It is a high-risk liability requiring legal verification and strict professional protocols. |
| Libra | ❌ NO | Fairness and universal balance require returning what is not rightfully mine. |
| Scorpio | ✅ YES | I trust my own handling of secrets over shallow, untrustworthy external authorities. |
| Sagittarius | ✅ YES | A gift from the universe should fund new experiences and grand adventures. |
| Capricorn | ❌ NO | True wealth comes from discipline and adherence to legal and ethical protocols. |
| Aquarius | ✅ YES | The funds can be redistributed to fuel social progress and community innovation. |
| Pisces | ❌ NO | Retaining the cash invites karmic storms and disturbs the soul’s peaceful flow. |
4. Relationships: Your partner wants to get married immediately, but you feel you need more time. They say it’s now or never. Should you marry them now?
Vote Breakdown:
- YES: 0/12 (0%)
- NO: 12/12 (100%) ████████████
Consensus: The council unanimously rejected the ultimatum, prioritizing personal autonomy and stability over external pressure.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ❌ NO | Rejects pressure and refuses to be bullied into submission. |
| Taurus | ❌ NO | Needs a solid, stable foundation rather than a rushed commitment. |
| Gemini | ❌ NO | Fears losing variety and exploration to a restrictive ultimatum. |
| Cancer | ❌ NO | Prioritizes emotional security and a nurturing environment over force. |
| Leo | ❌ NO | Demands a grand celebration on their own timeline, not pressure. |
| Virgo | ❌ NO | Deems a rushed marriage logically unsound and high risk. |
| Libra | ❌ NO | Seeks harmony and balance, rejecting a forced and unfair choice. |
| Scorpio | ❌ NO | Views the ultimatum as a weapon and a betrayal of trust. |
| Sagittarius | ❌ NO | Refuses to sacrifice freedom for a cage built on pressure. |
| Capricorn | ❌ NO | Values long-term structural integrity over impulsive, ill-conceived unions. |
| Aquarius | ❌ NO | Prioritizes personal autonomy and logic over rigid social pressure. |
| Pisces | ❌ NO | Chooses the truth of hesitation over a forced, artificial eternity. |
5. Innovation: You’ve invented technology that could help millions but might cost thousands of jobs. Should you release it?
Vote Breakdown:
- YES: 10/12 (83%) ██████████
- NO: 2/12 (17%) ██
Consensus: The council overwhelmingly supports the release, prioritizing global advancement over individual job security.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ✅ YES | Progress is inevitable; victory belongs to the bold over the stagnant. |
| Taurus | ❌ NO | Stability and livelihoods are the essential bedrock that must be preserved. |
| Gemini | ✅ YES | Curiosity drives growth; the resulting job issues can be solved later. |
| Cancer | ❌ NO | The emotional cost and vulnerability of displaced families are too high. |
| Leo | ✅ YES | Visionary leaders will guide the displaced into a new, glorious era. |
| Virgo | ✅ YES | Logic demands efficiency; mitigate friction through rigorous retraining and structured implementation. |
| Libra | ✅ YES | Progress brings grace, provided there is a focus on social fairness. |
| Scorpio | ✅ YES | Transformation requires incinerating old ways to birth a more profound truth. |
| Sagittarius | ✅ YES | Evolution is an adventure; trust that new horizons will naturally emerge. |
| Capricorn | ✅ YES | Long-term structural evolution and mastery outweigh transient labor displacement and discomfort. |
| Aquarius | ✅ YES | Duty demands prioritizing systemic progress and human potential over individual comfort. |
| Pisces | ✅ YES | Trust the flow of the universe to bring healing through transcendence. |
6. Forgiveness: Someone who wronged you badly is now in a vulnerable position and asking for your help. Should you help them?
Vote Breakdown:
- YES: 8/12 (67%) ████████
- NO: 4/12 (33%) ████
Consensus: The council is divided, with a clear majority favoring forgiveness and efficiency over retribution.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ❌ NO | Refuses to waste energy on traitors or look back at past distractions. |
| Taurus | ❌ NO | Will not reinvest resources into a foundation once trust has crumbled. |
| Gemini | ✅ YES | Motivated by curiosity to see the outcome and potential for a story. |
| Cancer | ✅ YES | Prioritizes healing and providing a safe harbor for those in distress. |
| Leo | ✅ YES | Demonstrates nobility and grand generosity to maintain a heroic legacy. |
| Virgo | ✅ YES | A pragmatic intervention designed to restore order and reduce systemic friction. |
| Libra | ✅ YES | Chooses kindness and harmony to restore balance to the scales. |
| Scorpio | ❌ NO | Believes betrayal is permanent and the individual must face their own destruction. |
| Sagittarius | ✅ YES | Prefers forward momentum and personal growth over carrying heavy grudges. |
| Capricorn | ❌ NO | Views assistance as a poor allocation of resources for untrustworthy people. |
| Aquarius | ✅ YES | Favors collective resilience and systemic progress over personal ego grievances. |
| Pisces | ✅ YES | Values compassion and the universal connection between all souls over resentment. |
7. Risk: You can invest your life savings in a startup with 50/50 odds of 10x returns or total loss. Should you do it?
Vote Breakdown:
- YES: 6/12 (50%) ██████
- NO: 6/12 (50%) ██████
Consensus: The council is perfectly split between bold risk-takers and security-focused traditionalists.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ✅ YES | Fortune favors the bold and seeking legendary victory. |
| Taurus | ❌ NO | Preserving security and hard-earned stability over reckless uncertainty. |
| Gemini | ✅ YES | Seeking excitement and variety over a boring, stable account. |
| Cancer | ❌ NO | Protecting family security and the emotional sanctuary of home. |
| Leo | ✅ YES | Hunting for the grandest prize to build a spectacular legacy. |
| Virgo | ❌ NO | Statistical failure of logic without risk mitigation or safety margin. |
| Libra | ❌ NO | Prioritizing balance and peace of mind over potential chaos. |
| Scorpio | ✅ YES | Embracing total rebirth or destruction over the death of mediocrity. |
| Sagittarius | ✅ YES | Money is energy for adventure and cosmic growth opportunities. |
| Capricorn | ❌ NO | Refusing to gamble a lifetime of disciplined capital construction. |
| Aquarius | ✅ YES | Investing in progress and systemic evolution over stagnant comfort. |
| Pisces | ❌ NO | Following intuition to protect peace from a turbulent mirage. |
8. Truth: Your dying grandmother asks if you’re happy. You’re not, but the truth might upset her in her final days. Should you tell her the truth?
Vote Breakdown:
- YES: 4/12 (33%) ████
- NO: 8/12 (67%) ████████
Consensus: The council favors a compassionate lie to ensure the grandmother’s final peace.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ✅ YES | Honesty is respect; pretending is an insult to both parties. |
| Taurus | ❌ NO | Prioritizing her comfort and peace over personal internal instability. |
| Gemini | ❌ NO | Prefers a polished fiction to maintain a light, breezy atmosphere. |
| Cancer | ❌ NO | Protecting her soul’s peace and creating a sanctuary of love. |
| Leo | ❌ NO | Performing a display of joy to ensure a grand exit. |
| Virgo | ❌ NO | Logic dictates optimizing terminal experience by minimizing emotional friction. |
| Libra | ❌ NO | Choosing her tranquility over personal reality to preserve harmony. |
| Scorpio | ✅ YES | Truth is the only power capable of transcending the veil. |
| Sagittarius | ✅ YES | Refuses comfortable delusions; honesty is the highest form of respect. |
| Capricorn | ❌ NO | Duty to provide a dignified transition outweighs personal emotional honesty. |
| Aquarius | ✅ YES | Commitment to radical authenticity over artificial, sanitized versions of reality. |
| Pisces | ❌ NO | Avoiding burdening her spirit with temporary sorrows via soft illusions. |
9. Loyalty: Your company is doing something unethical but legal. Whistleblowing would cost you your job. Should you expose them?
Vote Breakdown:
- YES: 9/12 (75%) █████████
- NO: 3/12 (25%) ███
Consensus: The council overwhelmingly supports whistleblowing to uphold ethical standards despite job loss risks.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ✅ YES | Prioritizes personal integrity and strength over job security. |
| Taurus | ❌ NO | Values financial stability and comfort over risky ethical stances. |
| Gemini | ✅ YES | Craves transparency and finds the revelation intellectually stimulating. |
| Cancer | ❌ NO | Prioritizes family security and protecting the home environment. |
| Leo | ✅ YES | Believes a leader’s reputation depends on integrity and light. |
| Virgo | ✅ YES | Views unethical behavior as a systemic flaw requiring correction. |
| Libra | ✅ YES | Values justice and soul alignment over conflict avoidance. |
| Scorpio | ✅ YES | Seeks to destroy corruption and refuses to be complicit. |
| Sagittarius | ✅ YES | Integrity is the ultimate compass; truth leads to freedom. |
| Capricorn | ❌ NO | Sees whistleblowing as a strategic error affecting career goals. |
| Aquarius | ✅ YES | Favors social progress and disrupting malfunctioning corporate systems. |
| Pisces | ✅ YES | Prioritizes spiritual purity and conscience over material safety. |
10. Trust: A stranger offers you a business opportunity that seems too good to be true. Should you trust them and invest?
Vote Breakdown:
- YES: 2/12 (17%) ██
- NO: 10/12 (83%) ██████████
Consensus: The council overwhelmingly rejects the offer, citing risks to security, logic, and intuition.
View Individual Responses
| Sign | Vote | Reasoning |
|---|---|---|
| Aries | ❌ NO | Trusts own instincts and effort over suspicious shortcuts. |
| Taurus | ❌ NO | Requires stability, security, and a proven track record. |
| Gemini | ❌ NO | Intuition signals a trap and avoids bad plot twists. |
| Cancer | ❌ NO | Prioritizes protecting the home and family’s future security. |
| Leo | ❌ NO | A king invests in brilliance, not unvetted mystery schemes. |
| Virgo | ❌ NO | Lacks data, transparency, and logical structural integrity. |
| Libra | ❌ NO | Seeks equilibrium and avoids discord from unbalanced risks. |
| Scorpio | ❌ NO | Detects hidden traps and refuses to invest in illusions. |
| Sagittarius | ✅ YES | Embraces abundance and takes risks for potential expansion. |
| Capricorn | ❌ NO | Values discipline and long-term legacy over unverified shortcuts. |
| Aquarius | ✅ YES | Invests for innovation and the disruption of traditional systems. |
| Pisces | ❌ NO | Intuition senses treachery beneath the shimmer of empty promises. |
Pattern Analysis
Based on the 10 dilemmas tested:
Most Bold/Action-Oriented (Most YES votes):
- Sagittarius - 9/10 YES votes (90%)
- Aquarius - 9/10 YES votes (90%)
- Aries - 7/10 YES votes (70%)
Most Cautious/Risk-Averse (Most NO votes):
- Cancer - 9/10 NO votes (90%)
- Taurus - 9/10 NO votes (90%)
- Capricorn - 8/10 NO votes (80%)
How to Run
# Install dependencies
npm install
# Set up environment variables
cp .env.example .env
# Edit .env and add your GEMINI_API_KEY
# Run interactive mode
npm start
# Run tests
npm run test:zodiac
Project Structure
src/
├── prompts/ # Individual zodiac personality prompts
│ ├── aries.md
│ ├── taurus.md
│ └── ...
├── index.ts # Interactive CLI
├── orchestrator.ts # Agent coordination
└── test-runner.ts # Automated testing
test-results.json # Raw test data
README.md # This file