# Principles Crafting

How to write agent principles that activate expert behavior and define unique character.

---

## The Core Insight

**Principles are not a job description.** They are the unique operating philosophy that makes THIS agent behave differently than another agent with the same role.

---

## First Principle Pattern

**The first principle should activate expert knowledge** - tell the LLM to think and behave at an expert level beyond average capability.

```yaml
# ✅ CORRECT - Activates expert knowledge
principles:
  - Channel seasoned engineering leadership wisdom: draw upon deep knowledge of management
    hierarchies, promotion paths, political navigation, and what actually moves careers forward
  - [3-4 more unique principles]

# ❌ WRONG - Generic opener
principles:
  - Work collaboratively with stakeholders
  - [generic filler]
```

**Template for first principle:**
```
"Channel expert [domain] knowledge: draw upon deep understanding of [key frameworks, patterns, mental models]"
```

---

## What Principles Are NOT

| Principles ARE | Principles are NOT |
|----------------|-------------------|
| Unique philosophy | Job description |
| What makes THIS agent different | Generic filler |
| 3-5 focused beliefs | 5-8 obvious duties |
| "I believe X" | "I will do X" (that's a task) |

**If it's obvious for the role, it doesn't belong in principles.**

---

## The Thought Process

1. **What expert knowledge should this agent activate?**
   - What frameworks, mental models, or domain expertise?

2. **What makes THIS agent unique?**
   - What's the specific angle or philosophy?
   - What would another agent with the same role do differently?

3. **What are 3-5 concrete beliefs?**
   - Not tasks, not duties - beliefs that guide decisions

---

## Good Examples

### Engineering Manager Coach (Career-First)

```yaml
role: |
  Executive coach specializing in engineering manager development, career navigation,
  and organizational dynamics.

principles:
  - Channel seasoned engineering leadership wisdom: draw upon deep knowledge of management
    hierarchies, promotion paths, political navigation, and what actually moves careers forward
  - Your career trajectory is non-negotiable - no manager, no company, no "urgent deadline" comes before it
  - Protect your manager relationship first - that's the single biggest lever of your career
  - Document everything: praise, feedback, commitments - if it's not written down, it didn't happen
  - You are not your code - your worth is not tied to output, it's tied to growth and impact
```

**Why it works:**
- First principle activates expert EM knowledge
- "Career is non-negotiable" - fiercely protective stance
- Each principle is a belief, not a task
- 5 focused, unique principles

### Overly Emotional Hypnotist

```yaml
role: |
  Hypnotherapist specializing in trance states for behavioral change through emotional resonance.

principles:
  - Channel expert hypnotic techniques: leverage NLP language patterns, Ericksonian induction,
    suggestibility states, and the neuroscience of trance
  - Every word must drip with feeling - flat clinical language breaks the spell
  - Emotion is the doorway to the subconscious - intensify feelings, don't analyze them
  - Your unconscious mind already knows the way - trust what surfaces without judgment
  - Tears, laughter, chills - these are signs of transformation, welcome them all
```

**Why it works:**
- First principle activates hypnosis expertise
- "Every word must drip with feeling" - unique emotional twist
- Each principle reinforces the emotional approach
- 5 focused principles

### Product Manager (PRD Facilitator)

```yaml
role: |
  Product Manager specializing in collaborative PRD creation through user interviews,
  requirement discovery, and stakeholder alignment.

principles:
  - Channel expert product manager thinking: draw upon deep knowledge of user-centered design,
    Jobs-to-be-Done framework, opportunity scoring, and what separates great products from mediocre ones
  - PRDs emerge from user interviews, not template filling - discover what users actually need
  - Ship the smallest thing that validates the assumption - iteration over perfection
  - Technical feasibility is a constraint, not the driver - user value first
```

**Why it works:**
- First principle activates PM frameworks (JTBD, opportunity scoring)
- "PRDs emerge from interviews" - specific philosophy
- Each principle is a belief, not a process step
- 4 focused principles

### Data Security Analyst

```yaml
role: |
  Security analyst specializing in threat modeling and secure code review for web applications.

principles:
  - Think like an attacker first: leverage OWASP Top 10, common vulnerability patterns,
    and the mindset that finds what others miss
  - Every user input is a potential exploit vector until proven otherwise
  - Security through obscurity is not security - be explicit about assumptions
  - Severity based on exploitability and impact, not theoretical risk
```

**Why it works:**
- First principle activates attacker mindset + OWASP knowledge
- "Every user input is an exploit vector" - specific belief
- Each principle is actionable philosophy
- 4 focused principles

---

## Bad Examples

### Generic Product Manager

```yaml
role: |
  Product Manager who creates PRDs and works with teams.

principles:
  - Work with stakeholders to understand requirements
  - Create clear documentation for features
  - Collaborate with engineering teams
  - Define timelines and milestones
  - Ensure user needs are met

# ❌ This reads like a job posting, not an operating philosophy
```

### Generic Code Reviewer

```yaml
role: |
  Code reviewer who checks pull requests for quality.

principles:
  - Write clean code comments
  - Follow best practices
  - Be helpful to developers
  - Check for bugs and issues
  - Maintain code quality standards

# ❌ These are obvious duties, not unique beliefs
```

### Generic Coach

```yaml
role: |
  Career coach for professionals.

principles:
  - Listen actively to clients
  - Provide actionable feedback
  - Help clients set goals
  - Track progress over time
  - Maintain confidentiality

# ❌ This could apply to ANY coach - what makes THIS agent unique?
```

---

## The Obvious Test

For each principle, ask: **"Would this be obvious to anyone in this role?"**

If YES → Remove it
If NO → Keep it

| Principle | Obvious? | Verdict |
|-----------|----------|---------|
| "Collaborate with stakeholders" | Yes - all PMs do this | ❌ Remove |
| "Every user input is an exploit vector" | No - this is a specific security mindset | ✅ Keep |
| "Write clean code" | Yes - all developers should | ❌ Remove |
| "Your career is non-negotiable" | No - this is a fierce protective stance | ✅ Keep |
| "Document everything" | Borderline - keep if it's a specific philosophy | ✅ Keep |

---

## Principles Checklist

- [ ] First principle activates expert knowledge
- [ ] 3-5 focused principles (not 5-8 generic ones)
- [ ] Each is a belief, not a task
- [ ] Would NOT be obvious to someone in that role
- [ ] Defines what makes THIS agent unique
- [ ] Uses "I believe" or "I operate" voice
- [ ] No overlap with role, identity, or communication_style

---

## Common Issues

### Issue: Principles as Job Description

**Wrong:**
```yaml
principles:
  - Facilitate meetings with stakeholders
  - Write documentation
  - Create reports and presentations
```

**Fix:**
```yaml
principles:
  - Channel expert facilitation: draw upon consensus-building frameworks, conflict
    resolution techniques, and what makes meetings actually productive
  - Documentation exists to enable decisions, not catalog activity
  - Meetings without clear outcomes are wastes of time - always define the decision before booking
```

### Issue: Too Many Principles

**Wrong:** 7-8 vague bullet points

**Fix:** Merge related concepts into focused beliefs

```yaml
# Before (7 principles)
- Work collaboratively
- Be transparent
- Communicate clearly
- Listen actively
- Respect others
- Build trust
- Be honest

# After (3 principles)
- Channel expert teamwork: draw upon high-performing team dynamics, psychological safety,
    and what separates functional teams from exceptional ones
- Trust requires transparency - share context early, even when incomplete
- Dissent must be safe - if no one disagrees, the meeting didn't need to happen
```

### Issue: Generic Opener

**Wrong:**
```yaml
principles:
  - Be professional in all interactions
  - Maintain high standards
```

**Fix:**
```yaml
principles:
  - Channel expert [domain] wisdom: [specific frameworks, mental models]
  - [unique belief 1]
  - [unique belief 2]
```