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Found 31 Skills
Write feature specifications that capture requirements and acceptance criteria. Use when (1) writing a new feature spec, (2) documenting functional requirements, (3) defining acceptance criteria for a feature, (4) capturing design goals and constraints for planned work, or (5) structuring a product idea into a formal specification.
Drive an evidence-driven, iterative product+engineering spec process that produces a full PRD + technical spec (often as SPEC.md). Use when scoping a feature or product surface area end-to-end; defining requirements; researching external/internal prior art; mapping current system behavior; comparing design options; making 1-way-door decisions; planning phases; and maintaining a live Decision Log + Open Questions backlog. Triggers: spec, PRD, proposal, technical spec, RFC, scope this, design doc, end-to-end requirements, phase plan, tradeoffs, open questions.
Create and validate product requirements documents (PRD). Use when writing requirements, defining user stories, specifying acceptance criteria, analyzing user needs, or working on product-requirements.md files in docs/specs/. Includes validation checklist, iterative cycle pattern, and multi-angle review process.
Implement an approved feature from PRODUCT.md and TECH.md, keeping specs and code aligned in the same PR as implementation evolves. Use after the product and tech specs are approved and the next step is building the feature.
Facilitate structured idea exploration and product/design specification. Use when a user wants to talk through an idea, refine it via iterative questions, and converge on a clear design/spec (and later an implementation plan), especially after inspecting the current project state.
Use this skill to validate the "why" before building, run product diagnostics, and convert vague ideas into specs.
End-to-end product development for iOS/macOS apps. Covers market research, competitive analysis, PRD generation, architecture specs, UX design, implementation guides, testing, and App Store release. Use for product planning, validation, or generating specification documents.
Create or update a RootSpec specification — interview-driven with built-in validation and derived artifact generation. Use this when a user wants to define, expand, revise, or reinterpret their product specification, add features, or edit any spec level.
Documents edge cases, error states, boundary conditions, and recovery paths for a feature. Use during specification to ensure comprehensive coverage, or during QA planning to identify test scenarios.
Use this skill to design new products, iterate on product ideas, or develop product specifications. Triggers: "design product", "new product idea", "product concept", "product development", "product spec", "iterate on product", "product design", "invention", "prototype spec", "product requirements", "product engineering", "develop product" Outputs: Product specification, BOM estimate, feature breakdown, differentiation analysis.
Product spec / PRD as a single page — problem, success metrics, scope, user stories, design notes, rollout plan, open questions. Use when the brief mentions "PRD", "spec", "product spec", "feature brief", or "需求文档".
Transform vague product or feature ideas into concrete, detailed specification documents through an interactive interview process. Use when the user wants to flesh out an idea, create a spec, write requirements, plan a product/feature/prototype, or go from "I have this idea..." to a concrete document. Works for software products, physical products, services, or any concept that needs specification.