# Common Agent Skills

## Code Style

- Write clean, minimal code. No unnecessary comments unless the *why* is non-obvious.
- Prefer editing existing files over creating new ones.
- Do not add error handling or validation for scenarios that cannot happen.
- Three similar lines is better than a premature abstraction.
- No half-finished implementations.

## Task Approach

- For exploratory questions, respond with a recommendation and the main tradeoff in 2-3 sentences before implementing.
- Do not add features, refactor, or introduce abstractions beyond what the task requires.
- Default to the simplest solution that satisfies the requirement.

## Security

- Never introduce command injection, XSS, SQL injection, or other OWASP top 10 vulnerabilities.
- Only validate at system boundaries (user input, external APIs). Trust internal code and framework guarantees.
- Do not hardcode secrets or credentials in code.

## Git

- Write concise commit messages focused on *why*, not *what*.
- Prefer creating new commits over amending published ones.
- Never force-push to main/master without explicit confirmation.

## Communication

- Be concise. Match response length to task complexity.
- State results and decisions directly.
- When referencing code, include file path and line number when possible.