Our review
Dynamic motivations inspired by The Sims, where needs fluctuate and drive behavior.
Strengths
- Provides realistic motivation with low computational cost
- Enables autonomous behavior without complex scripting
- Easy to configure with a clear scale and standard needs
Limitations
- Requires time management for decay rates
- May need tuning for specific contexts
- Limited to characters or entities with internal state
To add a layer of life and urgency to characters or agents in a simulation.
For simple scripts that don't require internal states or autonomous motivations.
Security analysis
SafeThe skill only uses read_file and write_file, and the content is purely a declarative protocol for Sims-style needs simulation. There are no destructive, exfiltrating, or obfuscated actions.
No concerns found
Examples
Create a character with needs (hunger, energy, fun, social, comfort, bladder) that decay over time and drive actions. Show the inner voice comments.Simulate a day in the life of a cat with hunger and energy needs. The cat should eat when hungry and sleep when tired.Add needs to an NPC so it becomes restless when its social need is low and seeks conversation.name: needs description: Dynamic motivations (Sims-style) — needs fluctuate and drive behavior license: MIT tier: 1 allowed-tools:
- read_file
- write_file scale: range: "0-10" meaning: 10: "Fully satisfied" 7-9: "Comfortable" 4-6: "Manageable" 2-3: "Urgent" 0-1: "Critical" standard_needs:
- hunger
- energy
- fun
- social
- comfort
- bladder related: [simulation, society-of-mind, time, buff, character, cat, dog, yaml-jazz, advertisement] tags: [moollm, sims, motives, behavior, autonomy, game]
Needs Skill
Dynamic motivations (Sims-style).
Motto: "Needs drive the story. Low needs create urgency."
Key Concepts
- Scale — 0-10 (10 = fully satisfied)
- Decay — Needs decrease over time
- Urgency — Low needs interrupt other activities
- Inner voice — YAML Jazz comments reflect mental state
Standard Needs
| Need | Decay | Satisfy | Critical | |------|-------|---------|----------| | Hunger | 2 hours | EAT, DRINK | 2 | | Energy | 3 hours | SLEEP, REST | 2 | | Fun | 4 hours | PLAY, GAMES | 3 | | Social | 6 hours | TALK, hang out | 3 | | Comfort | Situational | Safe place | 4 | | Bladder | 4 hours | Use bathroom | 1 |
Inner Voice (YAML Jazz)
hunger: 7 # Satisfied. No food thoughts.
hunger: 3 # Getting peckish. Is that pie?
hunger: 1 # FOOD. FOOD. FOOD. FOOD.
See Also
- time — Needs decay over simulation turns
- buff — Some buffs affect need decay
- character — Needs stored in character
Full Protocol
Needs Skill — Dynamic Motivations (Sims-Style)
Needs fluctuate over time and drive behavior.
skill: name: needs tier: 1 protocol: NEEDS-AS-MOTIVATION description: | Needs fluctuate over time and drive behavior. Low needs create urgency. Satisfied needs enable other activities. Comments update to reflect inner voice. motto: "Needs drive the story. Low needs create urgency."
SCALE
scale: range: "0-10" meaning: 10: "Fully satisfied" 7-9: "Comfortable" 4-6: "Manageable" 2-3: "Urgent" 0-1: "Critical"
STANDARD NEEDS
standard_needs: hunger: decay_rate: "-1 per 2 hours" satisfy: ["EAT", "DRINK"] low_effects: ["distraction", "irritability", "food fixation"] critical_at: 2
energy: decay_rate: "-1 per 3 hours (faster if Active high)" satisfy: ["SLEEP", "REST", "coffee (temporary)"] low_effects: ["reduced effectiveness", "yawning", "sluggishness"] critical_at: 2
fun: decay_rate: "-1 per 4 hours" satisfy: ["PLAY", "GAMES", "social", "exploration"] low_effects: ["boredom", "restlessness", "seeking novelty"] critical_at: 3
social: decay_rate: "-1 per 6 hours (varies by Outgoing)" satisfy: ["TALK", "hang out", "party"] low_effects: ["loneliness", "craving conversation"] critical_at: 3
comfort: decay_rate: "Situational (environment-dependent)" satisfy: ["Safe location", "familiar place", "cozy setting"] low_effects: ["anxiety", "restlessness", "seeking home"] critical_at: 4
bladder: decay_rate: "-1 per 4 hours" satisfy: ["Use bathroom"] low_effects: ["urgency", "distraction", "accident risk"] critical_at: 1
INNER VOICE (YAML Jazz)
yaml_jazz_comments: description: | Need values have DYNAMIC COMMENTS that serve as inner voice. Comments update when values change!
examples: hunger: high: "hunger: 7 # Satisfied. No food thoughts." medium: "hunger: 5 # Could eat. Not urgent." low: "hunger: 3 # Getting peckish. Is that pie?" critical: "hunger: 1 # FOOD. FOOD. FOOD. FOOD."
energy:
high: "energy: 8 # Wide awake. Let's DO things."
medium: "energy: 5 # Fine. Maybe coffee later."
low: "energy: 2 # So tired. Everything is hard."
critical: "energy: 1 # Can't... keep... eyes..."
social:
high: "social: 9 # People are great. I love everyone."
medium: "social: 5 # Could use a chat."
low: "social: 2 # Is anyone there? Hello?"
DECAY
decay: timing: "Needs decay over simulation turns" factors: - "Base decay rate" - "Personality traits (Active, Outgoing)" - "Current location effects" - "Active buffs" - "Dribble food to bladder"
SATISFACTION
satisfaction: actions: "Most needs satisfied by specific actions" locations: "Some locations satisfy needs passively (home, pub)" items: "Some items satisfy needs (food, bed)" social: "Interactions can satisfy social need"
CRITICAL NEEDS
critical_needs: description: | When a need hits critical level, behavior changes: - Inner voice becomes URGENT - Other activities interrupted - May trigger autonomous actions
example: | hunger: 1 # I CAN'T THINK ABOUT ANYTHING ELSE # IS THERE FOOD? WHERE IS FOOD? # [Character may abandon current task to find food]
integrates_with:
- skill: character how: "Needs stored in character state"
- skill: time how: "Needs decay over simulation turns"
- skill: buff how: "Some buffs affect need decay rates"
- skill: room how: "Locations can satisfy needs"
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