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Design Engineering
Agent skills

$context

Create or revise repository instructions using verified commands, paths, architecture constraints, and review expectations.

The complete SKILL.md — the exact instruction your agent receives:

SKILL.md
# Agent context

Record what an agent would otherwise guess incorrectly. Read existing context files and their scope before editing; keep one authoritative home for each rule.

## Work

- Verify project purpose, commands, runtime, paths, and architecture from the workspace. Never invent a test command or an existing component.
- Capture consequential boundaries: where secrets and authorization live, who owns cached data, token/component sources, and generated files.
- Include the actual checks and observable evidence expected for the work. Distinguish lint/build from rendered or behavioral verification.
- Separate durable conventions from task-specific plans. Link focused supporting docs instead of embedding complete manuals.
- Reconcile contradictions and stale instructions, including blanket lockfile bans, duplicate formatting stacks, and obsolete paths. Preserve explicit user policies unless asked to change them.
- Match the client and file format already in use. If adding client-specific discovery rules, verify current client documentation; do not claim every client loads every filename.

## Deliver

Update the requested file, or provide a ready-to-use draft when edits were not requested. Usually include purpose, commands, important paths, non-obvious constraints, and verification. Omit empty sections and generic coding advice.

```markdown
# AGENTS.md

## Project
## Commands
## App structure
## Architecture rules
## Styling and design system
## Accessibility
## Testing and validation
## Git workflow
## Agent guardrails
```

Example: “Tokens live in app/globals.css. Docs styles consume them in app/docs-theme.css. Run pnpm build to validate MDX routes.” This is more useful than “write clean code.”

Check every referenced local command and path; label external or future dependencies. The file guides authorized work, not permission to publish or expand a task.

## Worked example

# AGENTS.md

## Project
Next.js 16 App Router dashboard for a construction scheduling client. pnpm.

## Commands
- `pnpm dev` — local dev server
- `pnpm check` — Biome lint + format
- `pnpm test` — Vitest

## App structure
- `src/app/` routes; `src/components/ui/` primitives; `src/components/features/` feature components

## Architecture rules
- Server components by default; `use client` only at leaves
- Data fetching via TanStack Query hooks in `src/lib/data/`

## Styling and design system
- Tokens only from `src/styles/globals.css`; no inline hex or arbitrary values
- Components from `src/components/ui/`; no new primitives without review

## Accessibility
- WCAG 2.2 AA; visible focus ring on all interactive elements; 44px touch targets

## Testing and validation
- Component tests for primitives; Playwright smoke for critical flows; `pnpm check` before PRs

## Git workflow
- `feat/*` branches from `dev`; squash merge after human review

## Agent guardrails
- Ask before refactoring; never edit `pnpm-lock.yaml`; state assumptions in the PR description

## Gotchas

- Verify every command and path in the workspace; do not invent commands or components.
- Keep one authoritative home per rule; do not duplicate guidance across files.
- Record durable conventions only; do not embed task plans or full manuals.
- Mark unknowns as assumptions; do not present unverified tooling as fact.
- Match the client and file format in use; do not claim every client loads every filename.

## Boundaries

- Do not use when repository conventions do not exist yet — use `$setup` first to establish structure, commands, and env strategy.
- Do not invent validation commands or paths; mark unknowns as assumptions to confirm.

Install just this skill

Install one skill
npx skills add mattjmdesign/dengskills --skill context

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