api-design
API Design
Coverage
Design clear and evolvable API surfaces. Covers resources vs actions, route naming, request/response schemas, validation, status codes, pagination, filtering, sorting, idempotency, auth boundaries, error envelopes, rate-limit signals, versioning, deprecation, and contract examples.
Philosophy
An API is a product surface for another program. Its main job is stable meaning under change. Internal convenience should not leak into routes, schemas, or errors unless consumers actually need it.
Prefer boring consistency. A small set of predictable patterns beats clever endpoint-specific behavior that every client has to rediscover.
Method
More from jacob-balslev/skill-graph-skills
ai-native-development
Use when reasoning about agent autonomy levels, designing auto-improve loops, evaluating AI-generated code quality, or measuring agent productivity in an LLM-assisted codebase. Covers Karpathy's three eras of software (1.0 explicit / 2.0 learned / 3.0 natural-language), the vibe-coding-vs-agentic-engineering distinction, the 0–5 autonomy slider with task-type recommendations, the one-asset / one-metric / one-time-box AutoResearch loop, Software 3.0 productivity metrics, and the documented quality regressions of ungated AI-generated code (the 'vibe hangover'). Do NOT use for choosing a specific autonomy-loop topology (use `agent-engineering`), for the per-prompt authoring discipline (use `prompt-craft`), or for reviewing the AI-generated code that comes out of a Software 3.0 workflow (use `code-review`).
4ideation
Use when generating a wide range of solution concepts before converging on a direction, running structured idea-generation sessions, breaking out of solution fixation, or moving from divergent to convergent selection with explicit criteria. Do NOT use for collaborative engineering domain discovery (event-storming), solo deep technical design, or making final go/no-go investment decisions — those require different methods.
4frontend-architecture
Use when organizing a frontend codebase — module boundaries, component layering, state ownership, data-flow direction, and the separation between feature code and shared primitives. Do NOT use for visual design decisions, specific framework migration tactics, or backend API contract design.
4color-system-design
Use when designing a color system — palette construction, semantic color tokens, WCAG contrast ratios, perceptual uniformity in OKLCH/LCH, and light/dark mode parity. Do NOT use for single brand-color picks, runtime theme-switching mechanics, or non-color design tokens.
4agent-engineering
Use when designing or evaluating a production AI agent system, choosing a multi-agent coordination pattern (orchestrator/worker, fan-out, consensus, sequential chain, evaluator/optimizer), diagnosing coordination failures (claim races, silent stalls, context contamination, runaway loops), or auditing whether an agent loop is truly production-ready. Covers the four pillars (architecture and lifecycle, task decomposition, coordination patterns, production reliability), the six reliability requirements (observability, cost budgets, idempotency, failure recovery, safety caps, claim locks), the delegation decision framework with overhead crossover, and the most common anti-patterns. Do NOT use for prompt wording (use `prompt-craft`), per-call tool efficiency (use `tool-call-strategy`), context-stack design within a single agent (use `context-engineering`), or runtime debugging of a deployed system (use `debugging`).
4form-ux-architecture
Use when designing or auditing form structure and validation UX: field grouping, required vs optional inputs, validation timing, client/server validation split, submission lifecycle, recovery, multi-step forms, and high-risk data entry. Do NOT use for labels and announcements alone (use `a11y`), validation-message wording (use `microcopy`), API schema design (use `api-design`), or stored data modeling (use `data-modeling`).
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