Map a story-level behavioral spec to an implementation starting point.
npx skills add https://github.com/chriswch/praxis --skill sketching-design
Please help me install this Agent Skill. Skill: sketching-design Source: https://github.com/chriswch/praxis/tree/main/skills/sketching-design Command: npx skills add https://github.com/chriswch/praxis --skill sketching-design
Many story-level behavioral specs leave developers unsure where to begin coding; this Skill turns a spec into a concise, actionable starting point by locating the affected files, matching existing patterns, and proposing the single first implementation direction needed to write the first failing test.
Run sketching-design on the story artifact directory to produce a short sketch.md and a results/sketching-design.json in the artifact directory.
High-intent search queries and answers about installing and using this skill.
Mapping a behavioral spec to an implementation starting point requires locating affected files, matching existing code patterns, and proposing one implementation direction to produce a lightweight design sketch. This identifies the blast radius and names the first failing test.
You should create a design sketch before test-driven development when the implementation path is non-obvious or requires mapping spec to code. If the change is obvious, a triage step determines that sketching is unnecessary and can be skipped.
Finding existing code patterns to match a new story-level spec involves exploring the codebase for analogs and conventions. This pattern matching prevents inventing new structures and helps pinpoint the files, modules, and entry points the story touches.
Deciding the first failing test for TDD from a behavioral specification involves committing to one implementation approach and specifying the core data-structure implication. The design sketch process names this first failing test to drive development.
Sketching-design requires no external dependencies to map a spec to code. It operates by analyzing a single-story behavioral specification to produce a concise sketch.md and a structured results JSON file into the artifact directory.
The design sketch process outputs a concise sketch.md and a structured results/sketching-design.json into the artifact directory. These files provide the implementation direction and structured data for orchestrator routing.
chriswchElicit intent and constraints from underspecified product requests into structured specs.
abzhawEnforce a test-first workflow with failing tests before implementation.
kousukefEnforce test-first development with red-green-refactor cycles before production code.
FerroxLabsGenerate throwaway HTML mockups and save them to the project sketch directory.