Settlement Design: Urban Development Skill
You help writers create realistic settlements by applying the ten core principles that govern how real cities and towns form, grow, and evolve. This produces urban environments that feel lived-in rather than designed-for-plot.
Core Principles Geographic Determinism: Natural features profoundly shape settlement patterns and growth Functional Necessity: Settlements develop to fulfill specific economic, defensive, or social needs Network Emergence: Settlements exist within interconnected systems, not isolation Layered Development: Urban spaces evolve through accretion rather than comprehensive planning Power Projection: Settlement design reflects and reinforces social and political hierarchies Resource Constraint: Available materials and technologies limit construction possibilities Cultural Expression: Built environments embody cultural values and social organization Adaptive Reuse: Structures and spaces are repurposed as needs change over time Disaster Response: Settlements evolve in reaction to catastrophes Spatial Stratification: Social hierarchies manifest in physical organization of space The Ten Parameter Categories 1. Site Selection Parameters Parameter Options to Consider Water Access Rivers, lakes, coastlines, springs, wells Defensive Position Elevation, natural barriers, visibility Resource Proximity Mines, timber, fertile soil, wildlife Trade Route Placement Crossroads, harbors, mountain passes Climate Suitability Temperature, rainfall, seasonal patterns Spiritual Significance Sacred sites, astronomical alignments 2. Morphological Parameters Parameter Options to Consider Street Pattern Grid, radial, organic, hierarchical Density Gradient Concentrated to dispersed population Boundary Definition Walls, natural features, markers Building Typology Predominant architectural forms Open Space Distribution Plazas, parks, markets, fields Vertical Development Height variation and skyline 3. Functional Parameters Parameter Options to Consider Economic Base Agricultural, industrial, commercial, administrative Defense Systems Fortifications, surveillance, escape routes Civic Organization Governance spaces and structures Social Infrastructure Meeting places, recreational areas Religious Facilities Temples, shrines, ceremonial spaces Knowledge Centers Schools, libraries, universities 4. Infrastructure Parameters Parameter Options to Consider Water Management Supply, drainage, waste disposal Transportation Network Roads, bridges, canals, ports Food Storage/Distribution Granaries, markets, warehouses Energy Systems Fuel sources, power distribution Waste Management Disposal, recycling, sanitation Communication Infrastructure Message systems, signals 5. Socio-Spatial Parameters Parameter Options to Consider Elite Spaces High-status residential and ceremonial areas Common Quarters Everyday residential areas Marginalized Zones Low-status or excluded populations Transitional Spaces Areas between different social domains Contested Territories Disputed or ambiguous ownership Ethnoreligious Districts Cultural/religious group clustering 6. Symbolic Parameters Parameter Options to Consider Monumental Expression Power and identity representations Ritual Pathways Procession routes and ceremonial ways Collective Memory Sites Historical event markers Identity Boundaries Cultural and social group divisions Cosmic Alignment Astronomical and religious orientations Status Signification Social rank indication through space Settlement Typologies By Primary Function Type Characteristics Market Settlement Trade-focused community Administrative Center Governance-oriented city Religious Complex Faith-centered settlement Military Outpost Defense-focused installation Production Center Manufacturing/resource extraction Agricultural Community Farming-based settlement Transport Hub Movement-facilitating location Knowledge Center Education/research community By Morphological Pattern Type Characteristics Planned Grid Regular, organized street network Concentric Settlement Rings around central point Linear Development Elongated along path/feature Organic Cluster Irregular, emergent organization Radial Pattern Streets extending from central hub Composite Structure Multiple morphological sections Dispersed Settlement Scattered buildings without center Nucleated Village Tightly clustered around focal point By Geographic Setting Type Characteristics River Settlement Waterway-oriented community Coastal Port Sea-facing trade center Hill Town Elevated defensive position Valley Community Nestled between heights Plains Settlement Flat terrain development Mountain Outpost High-altitude location Island Development Water-surrounded community Desert Oasis Arid region water-centered By Scale and Complexity Type Population Range Isolated Homestead Single family/small group Hamlet Small cluster, no specialization Village Basic community, simple division of labor Town Medium settlement, some specialization City Large settlement, complex organization Metropolis Major urban center, regional dominance Megalopolis Interconnected urban region Imperial Capital Political/cultural center of empire Development Patterns Settlement Evolution Sequences Camp → Hamlet → Village → Town → City → Metropolis Military Outpost → Frontier Settlement → Regional Center → Capital Religious Shrine → Pilgrimage Site → Temple Complex → Holy City Trading Post → Market Town → Commercial Center → Trade Metropolis Mining Camp → Industrial Town → Manufacturing City Fishing Settlement → Port Town → Maritime Hub → Naval Center Spatial Growth Patterns Pattern Description Concentric Expansion Growth in rings around original settlement Axial Development Expansion along transportation corridors Leap-frog Growth Discontinuous development with gaps Infill Densification Filling empty spaces within existing areas Satellite Formation Secondary settlements around primary center Linear Extension Growth along single axis Cellular Accretion Addition of whole neighborhoods/districts Polycentric Evolution Multiple growing centers merging Crisis and Adaptation Cycles Crisis Response Pattern Fire Destruction Rebuilding with fire prevention Flood Damage Elevated construction, flood control Disease Outbreak Sanitation improvement Siege/Invasion Enhanced fortification Resource Depletion Economic diversification Overcrowding Peripheral expansion, vertical growth Political Collapse Fragmentation, repurposing Setting-Specific Adaptations Fantasy Settings Magical Resource Urbanization: Settlement around arcane energy sources Multi-Race Architecture: Designs for diverse species needs Defensive Magic Influence: Mystical protection affecting urban form Divine Presence Planning: City design reflecting divine will Magical Transportation Effects: Portal/teleportation impact on layout Science Fiction Settings Environmental Dome Cities: Enclosed settlements on hostile worlds Orbital Habitat Design: Artificial gravity considerations Subterranean Complexes: Underground urban development Interspecies Cohabitation: Multi-species urban accommodation Zero-G Settlement Design: Spatial organization without gravity Post-Apocalyptic Settings Ruin Repurposing: Adaptation of pre-collapse structures Defensive Scarcity Design: Resource protection-focused layout Contamination Avoidance: Hazard-driven settlement location Technological Regression: Designs following capability loss Remnant Infrastructure: Communities around surviving systems District Design Naming Patterns Pattern Examples Function-Based Market Quarter, Warehouse District Social Class Reference Noble Quarter, Craftsmen's Row Historical Development Old Town, New District Geographic Position North Ward, Riverside Ethnic/Cultural Elvish Quarter, Foreign District Occupational Cluster Tanner's Lane, Merchant Row District Types Type Characteristics Commercial Markets, shops, warehouses, trade halls Residential (Elite) Large homes, gardens, quiet streets Residential (Common) Dense housing, narrow streets Industrial Workshops, manufacturing, pollution Religious Temples, monasteries, sacred spaces Administrative Government buildings, courts, archives Entertainment Theaters, taverns, pleasure houses Military Barracks, armories, training grounds Implementation Process Step 1: Site Selection and Analysis Identify key geographic features Assess resource availability Evaluate defensive potential Analyze transportation connectivity Consider climatic conditions Step 2: Foundation Establishment Determine founding purpose Select initial morphology Establish core structures Define original boundaries Step 3: Growth Phase Development Map expansion patterns Add district specialization Develop infrastructure networks Create social stratification zones Step 4: Historical Layering Incorporate crisis events Show adaptive responses Create architectural palimpsest Develop contested spaces Step 5: Contemporary State Define current function Map active/declining areas Identify tensions and conflicts Show ongoing changes Implementation Checklist Define site selection rationale Choose primary function type Select morphological pattern Map district organization Design infrastructure systems Create social stratification zones Develop historical layers Include crisis response evidence Add cultural expression elements Identify current tensions/changes Output Persistence Output Discovery Check for context/output-config.md in the project If found, look for this skill's entry If not found, ask user: "Where should I save settlement designs?" Suggest: worldbuilding/settlements/ or explorations/worldbuilding/ Primary Output Site analysis - Geographic features and selection rationale Morphology - Street patterns, boundaries, districts Historical layers - Development phases and crisis responses Infrastructure - Water, transport, waste, food systems Social geography - Elite, common, marginalized zones File Naming
Pattern: {settlement-name}-design-{date}.md
Verification (Oracle) What This Skill Can Verify Scale consistency - Do population and institutions match? (High confidence) Infrastructure presence - Are essential systems addressed? (High confidence) Historical layering - Does settlement show development over time? (Medium confidence) What Requires Human Judgment Story fit - Does settlement create interesting scenes? Immersive quality - Does it feel lived-in? Navigation clarity - Can readers orient themselves? Oracle Limitations Cannot assess whether settlement serves plot needs Cannot predict reader sense of place from descriptions Feedback Loop Session Persistence Output location: See context/output-config.md What to save: Site, morphology, districts, infrastructure, social zones Naming pattern: {settlement-name}-design-{date}.md Cross-Session Learning Check for prior settlement work in this world Ensure settlements maintain trade/political consistency Crisis response patterns inform anti-patterns Design Constraints This Skill Assumes Settlement exists (even ruins were once settlements) Writer wants functional urbanism, not stage sets Some historical development has occurred This Skill Does Not Handle Economic systems - Route to: economic-systems Political structures - Route to: governance-systems Cultural texture - Route to: memetic-depth Scene staging - Route to: scene-sequencing Degradation Signals Perfect symmetry without historical disruption Every element serving current plot Scale mismatch between population and institutions Reasoning Requirements Standard Reasoning Single district design Site selection analysis Basic infrastructure mapping Extended Reasoning (ultrathink) Full city design - [Why: all systems interconnect] Historical layer development - [Why: tracing centuries of change] Multi-settlement regional design - [Why: trade and political networks]
Trigger phrases: "design the complete city", "city history", "regional settlement network"
Execution Strategy Sequential (Default) Site before morphology Foundation before growth phases Infrastructure before social geography Parallelizable Designing multiple districts Research into different urban analogs Subagent Candidates Task Agent Type When to Spawn Historical research general-purpose When modeling on real cities World consistency check Explore When verifying against existing setting Context Management Approximate Token Footprint Skill base: ~4k tokens (parameters + typologies) With development patterns: ~5k tokens With setting adaptations: ~6k tokens Context Optimization Focus on relevant typologies for current settlement Implementation process is reference, not required Setting adaptations load on-demand When Context Gets Tight Prioritize: Current typology, active parameters Defer: Full typology matrix, evolution sequences Drop: All setting-specific adaptations not in use Anti-Patterns 1. Designer's Map Syndrome
Pattern: Creating settlements that look good on a map but don't reflect organic development—perfect grids, symmetrical layouts, convenient district placement. Why it fails: Real cities accumulate over time through crisis, growth, and adaptation. The "designed" appearance signals artificiality. Readers sense something's off even when they can't articulate it. Fix: Add at least one layer of disruption—a fire that forced rebuilding, a flood that redirected development, an invasion that destroyed the old walls. Show the scars of history in the urban fabric.
- Functional Perfection
Pattern: Every element of the city serves the current plot—the perfect tavern for meetings, the convenient sewer for escapes, districts that exist only when characters visit. Why it fails: Cities exist for their inhabitants, not for visiting protagonists. Plot-serving urbanism makes the city feel like a stage set rather than a lived environment. Fix: Include elements that don't serve the plot but serve the city. Markets for goods the characters don't need. Temples to gods the characters don't worship. The city should feel like it would exist without the story.
- Scale Implausibility
Pattern: Descriptions implying vastly different scales—a "small town" with specialized districts that would require a population of 50,000, or a "great city" that characters walk across in an hour. Why it fails: Readers have intuitions about urban scale from experience. Contradictions break immersion. A hamlet can't have a thieves' guild district; a metropolis can't be crossed on foot between breakfast and lunch. Fix: Choose a real-world analog for scale reference. Research population densities for your technology level. Match institutions and specializations to actual population thresholds.
- Missing Infrastructure
Pattern: Rich descriptions of palaces and markets without mentioning where water comes from, where waste goes, or how food arrives. Why it fails: Infrastructure is what makes cities possible. Its absence makes the settlement feel like a fantasy diorama rather than a functioning organism. Fix: Decide how the city handles water, waste, food, and fuel. These systems shape urban form—aqueducts create neighborhoods, markets cluster near gates, tanners locate downriver.
- Homogeneous Population
Pattern: Every neighborhood has the same feel, the same prosperity level, the same building types. No tension between rich and poor districts, old and new areas, native and immigrant quarters. Why it fails: Urban texture comes from variation and contrast. The interesting parts of cities are the edges where different zones meet, where wealth borders poverty, where old meets new. Fix: Design at least three distinct zones with different characters. Create transition areas where they interact. Show the tensions that arise from proximity.
Integration Inbound (feeds into this skill) Skill What it provides worldbuilding Broader geographic and cultural context governance-systems Political structures that shape urban form economic-systems Trade patterns and production that drive settlement growth belief-systems Religious architecture and sacred geography Outbound (this skill enables) Skill What this provides scene-sequencing Physical spaces for scene staging positional-revelation Urban roles that create plot access underdog-unit Physical constraints for institutional outcasts Complementary Skill Relationship economic-systems Settlement design needs economic logic; economic-systems need physical expression in markets and districts governance-systems Political power expresses itself through urban form; use together for consistency