AGENT PERSONALITY API

Your AI agent forgets who it is after 50K tokens

You wrote a 200-line system prompt. By turn 40, your agent sounds like every other chatbot. We tested why — and built the fix.

curl — agent-api
$ curl -X POST https://n1k.pro/v1/agent \
  -H "Content-Type: application/json" \
  -d '{"role": "SDR for B2B SaaS", "style": "direct, no fluff"}'

{
  "identity": ["I handle rejection as data, not defeat..."],
  "skills": ["Domain-specific expertise for qualifying and outreach..."],
  "behavior": [{"situation":"Cold outreach","bad":"Generic pitch","good":"Research-based hook"}],
  "meta": {"generation_time": 0.3, "layers": {"identity":5,"skills":2,"behavior":3}}
}
01 — WHY IT BREAKS

Your agent drifts. Ours doesn't.

WHAT YOU DO NOW
"You are a professional sales agent. Always be direct. Never apologize unnecessarily."

Turn 1: direct. Turn 20: default behavior creeps back. Turn 40: "How can I help you today?"

Context compression hits — personality evaporates.

You re-inject the prompt. Cost doubles. Agent still drifts.
WHAT WE DO
Identity layer: your agent gets beliefs, not instructions. Beliefs persist through context window — tested across 100K+ tokens.

Expertise layer: domain-specific knowledge activated for the exact role. Not generic — tuned to the job.

Behavior layer: concrete examples of right and wrong actions. Your agent sees how to act before it responds. Measured: 2x more consistent than rules alone.
02 — THREE LAYERS

What you get

⚓
Identity
"I handle frustrated customers and complex bugs simultaneously — and neither gets a template response." Your agent gets a self-concept, not a rulebook.
Result: personality survives 100K+ tokens of conversation without re-injection.
🧬
Expertise
Domain-specific knowledge tuned for the exact role. A sales agent gets sales expertise. A support agent gets de-escalation skills. Not generic — specialized.
Result: expert-level responses from the first message, not after 10 turns of context.
🌀
Behavior
"Client demands refund." Wrong: apologize and process. Right: acknowledge, diagnose root cause, offer fix + compensation. Your agent sees how to act before it responds.
Result: 2x more consistent behavior than system prompt rules alone.
03 — TRY IT

Generate now


    

  










  
04 — PRICING

  
Simple & transparent

  

    

      
Free

      
$0

      
forever

      
    
        
  • 3 generations / day
    • 
        
  • All three layers
    • 
        
  • Community support
    • 
      

      Try now
    

    

      
Pro

      
$29

      
/ month

      
    
        
  • Unlimited generations
    • 
        
  • Cached responses <1s
    • 
        
  • Priority support
    • 
        
  • Custom expertise profiles
    • 
      

      Get started
    

    

      
Enterprise

      
Custom

      
contact us

      
    
        
  • Private behavior library
    • 
        
  • Stress-tested profiles
    • 
        
  • On-premise deployment
    • 
        
  • Adversarial testing
    • 
      

      Contact
    

  










  
05 — START

  
Stop writing system prompts

  
One API call. Three layers. Agent that remembers who it is.

  

    Get API key
    Documentation