resend

Use when working with the Resend email API — sending transactional emails (single or batch), receiving inbound emails via webhooks, managing email templates, tracking delivery events, managing domains, contacts, broadcasts, webhooks, API keys, automations, events, viewing API request logs, or setting up the Resend SDK. Always use this skill when the user mentions Resend, even for simple tasks like "send an email with Resend" — the skill contains critical gotchas (idempotency keys, webhook verification, template variable syntax) that prevent common production issues. Resend Documentation API Reference

| Single (POST /emails) | 1 email, needs attachments, needs scheduling | What Do You Need? | PHP | resend/resend-php | >= 1.1.0 | composer require resend/resend-php | | 13 | Calling Resend API from the browser (CORS) | The API does not support CORS — this is intentional to protect your API key. Always call from server-side (API routes, serverless functions) | | 14 | 401 restrictedapikey | A sending-only API key was used on a non-sending endpoint (domains, contacts, etc.). Create a full-access key instead | Configuration keys: POST.

Run: npx -y skills add https://github.com/resend/resend-skills --skill resend --agent claude-code — the source lives at github.com/resend/resend-skills.