# Startup Skills: Sergio Xalambri > Every skill by Sergio Xalambri in the index, with a line saying when to use each one. I index these, I do not host them. Every entry points at the original author's repo and carries a source byline. ## Entries (7) - [Frontend accessibility best practices](https://github.com/sergiodxa/agent-skills/blob/main/skills/frontend-accessibility-best-practices/SKILL.md) by Sergio Xalambri: Use when building or reviewing React components, forms and controls for accessibility. - [Frontend async best practices](https://github.com/sergiodxa/agent-skills/blob/main/skills/frontend-async-best-practices/SKILL.md) by Sergio Xalambri: Use when async code has request waterfalls that could run in parallel. - [Frontend internationalization best practices](https://github.com/sergiodxa/agent-skills/blob/main/skills/frontend-internationalization-best-practices/SKILL.md) by Sergio Xalambri: Use when adding locales or language switching to a React Router app with remix-i18next. - [Frontend React best practices](https://github.com/sergiodxa/agent-skills/blob/main/skills/frontend-react-best-practices/SKILL.md) by Sergio Xalambri: Use when writing or reviewing React components for rendering and bundle performance. - [Frontend React Router best practices](https://github.com/sergiodxa/agent-skills/blob/main/skills/frontend-react-router-best-practices/SKILL.md) by Sergio Xalambri: Use when writing React Router loaders, actions, forms or routes. - [Frontend testing best practices](https://github.com/sergiodxa/agent-skills/blob/main/skills/frontend-testing-best-practices/SKILL.md) by Sergio Xalambri: Use when writing frontend tests that favour end-to-end coverage over mocks. - [OWASP security check](https://github.com/sergiodxa/agent-skills/blob/main/skills/owasp-security-check/SKILL.md) by Sergio Xalambri: Use when checking a web app or REST API against the OWASP Top 10. ## Links - [Page](https://startupskills.dev/sergiodxa): the same list, for a person. - [The whole index](https://startupskills.dev/llms.txt): all 189 entries. - [Skills index](https://startupskills.dev/skills): every skill, with search.