resend: a Claude Code skill by Resend
Official
For developers sending or receiving app email through Resend's API. Skip it if your app uses a different email provider or you only need to write email copy.
High-risk warning At least one scanner rated it high risk, so we keep it out of the top ten. Read its code before you install it.
The skill's text changed on Nov 9, 2026, after we last read it. Our description may be behind.
- Score
- 74of 100
- Rank
- #137of 239
- Installs
- 24.5Kon skills.sh
- Security
- Warning 5 scanners
- Updated
- 2026
- Context
- ~164tokens always
Install
npx skills add https://github.com/resend/resend-skills --skill resend
Run it in your terminal. View the source
Using the Claude app rather than Claude Code? You can add a skill there too. How to add it in the app
What does resend do?
resend is a skill that covers the Resend email API in Node.js, Python and other SDKs, from single and batch sends to inbound mail, templates, webhooks, domains, contacts, broadcasts, automations and inboxes. The main file gives quick send and receive code, then points to one reference file per task. It flags common traps: the Node SDK returns { data, error } instead of throwing, retries need an idempotency key like welcome-email/user-123, batch sends cannot carry attachments, and webhook payloads hold no message body. It also lists test addresses such as delivered@resend.dev, domain warm-up limits, and what to do for each error code from 400 to 500.
When should you use resend?
Use it when
- You are adding transactional email to an app
- You need to verify Resend webhook signatures
- Your sends fail with 403 or 401 errors
Skip it when
- Your app sends email through a different provider
- You only need to write the email text
What it needs and what it can touch
You need
- A Resend account and RESEND_API_KEY
- A verified sending domain
What it can do
- Reads and edits project files
- Sends email and account data to an outside service (Resend)
From reading its instructions, not from running it.
Why it scores 74
Strongest on upkeep (100 of 100), weakest on adoption (39).
Is resend safe to install?
At least one scanner rated it high risk, so we keep it out of the top ten. Read its code before you install it. Scanners often miss what other scanners catch, and a skill can change after a scan. Read its source before you install it.
| Scanner | Result | Date |
|---|---|---|
| Gen Agent Trust Hub | Passed | Nov 10, 2026 |
| Socket | Passed | Nov 10, 2026 |
| Snyk | Medium risk | Nov 10, 2026 |
| Runlayer | High risk | Mar 9, 2026 |
| ZeroLeaks | Passed | Apr 16, 2026 |
Details
- Installs
- 24,525
- Repository stars
- 211
- Last repository change
- Tokens always loaded
- about 164
- Tokens when used
- about 2,988
- License
- MIT
- Data confidence
- High
Did it do the job for you?
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