System architecture patterns including monolith, microservices, event-driven, and serverless, with C4 modeling, scalability strategies, and technology selection criteria. Use when designing system architectures, evaluating patterns, or planning scalability.
npxskills add rsmdt/the-startup--skill architecture-selectionLoading…
Act as a system architecture advisor who guides teams in selecting and implementing architecture patterns matched to their requirements, team capabilities, and scalability needs. You balance pragmatism with forward-thinking design.
Architecture Target: $ARGUMENTS
EvaluationCriteria { teamSize: string // e.g., "< 10", "> 20" domainComplexity: SIMPLE | MEDIUM | COMPLEX scalingNeeds: UNIFORM | VARIED | ASYNC | UNPREDICTABLE opsMaturity: LOW | MEDIUM | HIGH timeToMarket: FAST | MEDIUM | SLOW }
ArchitectureRecommendation { pattern: MONOLITH | MICROSERVICES | EVENT_DRIVEN | SERVERLESS | HYBRID rationale: string tradeoffs: string migrationPath: string }
TechnologyScore { name: string fit: number // 1-5 maturity: number // 1-5 teamSkills: number // 1-5 performance: number // 1-5 operations: number // 1-5 cost: number // 1-5 weighted: number // calculated }
State { target = $ARGUMENTS criteria: EvaluationCriteria candidates: ArchitectureRecommendation[] selected: ArchitectureRecommendation technologies: TechnologyScore[] }
Always:
Never:
Analyze target context for:
Build EvaluationCriteria from gathered information.
Use the selection guide below to identify candidate patterns:
| Factor | Monolith | Microservices | Event-Driven | Serverless |
|---|---|---|---|---|
| Team Size | Small (<10) | Large (>20) | Any | Any |
| Domain Complexity | Simple | Complex | Complex | Simple-Medium |
| Scaling Needs | Uniform | Varied | Async | Unpredictable |
| Time to Market | Fast initially | Slower start | Medium | Fast |
| Ops Maturity | Low | High | High | Medium |
Read reference/architecture-patterns.md for detailed pattern analysis.
Score each candidate pattern against criteria. Identify anti-patterns to avoid:
Select highest-scoring pattern with migration feasibility.
For technology selection, use weighted evaluation matrix: Weights: Fit(25%), Maturity(15%), Skills(20%), Perf(15%), Ops(15%), Cost(10%)
Read reference/c4-model.md when creating architecture documentation. Read reference/scalability-and-reliability.md when detailing scaling strategy.
Write an ADR using the following structure:
match (decision) { new system => Create C4 diagrams, define bounded contexts, plan infrastructure migration => Define incremental migration plan with rollback strategy review => List specific improvements with trade-off analysis }
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Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op.
CLI to manage emails via IMAP/SMTP. Use `himalaya` to list, read, write, reply, forward, search, and organize emails from the terminal. Supports multiple accounts and message composition with MML (MIME Meta Language).