Resend

Name: Resend
Author: vm0-ai

vm0-ai/vm0-skills

110 installs
76 repo stars
Updated August 4, 2026
vm0-ai/vm0-skills

Helps with ai & agent building tasks during AI-assisted development.

About

resend is a Claude Code skill for ai & agent building. It helps solo builders move faster with AI-assisted coding.

resend
AI & Agent Building
AI-coding skill

Resend by the numbers

110 all-time installs (skills.sh)
+2 installs in the week ending Jul 27, 2026 (Skillselion tracking)
Ranked #4,040 of 16,546 AI & Agent Building skills by installs in the Skillselion catalog
Data as of Aug 5, 2026 (Skillselion catalog sync)

npx skills add https://github.com/vm0-ai/vm0-skills --skill resend

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[![Listed on Skillselion](https://skillselion.com/badge/skills/vm0-ai/vm0-skills/resend.svg)](https://skillselion.com/skills/vm0-ai/vm0-skills/resend)

Installs	110
repo stars	★ 76
Last updated	August 4, 2026
Repository	vm0-ai/vm0-skills ↗

What it does

Helps with ai & agent building tasks during AI-assisted development.

Files

SKILL.mdMarkdownGitHub ↗

Troubleshooting

If requests fail, run zero doctor check-connector --env-name RESEND_TOKEN or zero doctor check-connector --url https://api.resend.com/emails --method POST

Emails

Send Email

Write to /tmp/resend_request.json:

{
  "from": "Acme <onboarding@resend.dev>",
  "to": ["<your-recipient-email>"],
  "subject": "<your-subject>",
  "html": "<p><your-html-content></p>"
}

Then run:

curl -s -X POST "https://api.resend.com/emails" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Send Email with Plain Text

Write to /tmp/resend_request.json:

{
  "from": "Acme <onboarding@resend.dev>",
  "to": ["<your-recipient-email>"],
  "subject": "<your-subject>",
  "text": "<your-plain-text-content>"
}

Then run:

curl -s -X POST "https://api.resend.com/emails" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Send Email with CC/BCC

Write to /tmp/resend_request.json:

{
  "from": "Acme <onboarding@resend.dev>",
  "to": ["<your-recipient-email>"],
  "cc": ["<your-cc-email>"],
  "bcc": ["<your-bcc-email>"],
  "subject": "<your-subject>",
  "html": "<p><your-html-content></p>"
}

Then run:

curl -s -X POST "https://api.resend.com/emails" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Send Email with Reply-To

Write to /tmp/resend_request.json:

{
  "from": "Acme <onboarding@resend.dev>",
  "to": ["<your-recipient-email>"],
  "reply_to": "<your-reply-to-email>",
  "subject": "<your-subject>",
  "html": "<p><your-html-content></p>"
}

Then run:

curl -s -X POST "https://api.resend.com/emails" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Send Scheduled Email

Schedule email using natural language or ISO 8601 format:

Write to /tmp/resend_request.json:

{
  "from": "Acme <onboarding@resend.dev>",
  "to": ["<your-recipient-email>"],
  "subject": "<your-subject>",
  "html": "<p><your-html-content></p>",
  "scheduled_at": "in 1 hour"
}

Then run:

curl -s -X POST "https://api.resend.com/emails" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Send Batch Emails

Send up to 100 emails in a single request:

Write to /tmp/resend_request.json:

[
  {
    "from": "Acme <onboarding@resend.dev>",
    "to": ["<your-recipient-1>"],
    "subject": "Hello 1",
    "html": "<p>Email 1</p>"
  },
  {
    "from": "Acme <onboarding@resend.dev>",
    "to": ["<your-recipient-2>"],
    "subject": "Hello 2",
    "html": "<p>Email 2</p>"
  }
]

Then run:

curl -s -X POST "https://api.resend.com/emails/batch" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Retrieve Email

curl -s "https://api.resend.com/emails/<your-email-id>" --header "Authorization: Bearer $RESEND_TOKEN"

List Sent Emails

curl -s "https://api.resend.com/emails" --header "Authorization: Bearer $RESEND_TOKEN"

Cancel Scheduled Email

curl -s -X POST "https://api.resend.com/emails/<your-email-id>/cancel" --header "Authorization: Bearer $RESEND_TOKEN"

Contacts

Create Contact

Write to /tmp/resend_request.json:

{
  "email": "<your-contact-email>",
  "first_name": "<your-first-name>",
  "last_name": "<your-last-name>",
  "unsubscribed": false
}

Then run:

curl -s -X POST "https://api.resend.com/contacts" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Create Contact with Custom Properties

Write to /tmp/resend_request.json:

{
  "email": "<your-contact-email>",
  "first_name": "<your-first-name>",
  "last_name": "<your-last-name>",
  "properties": {
    "company": "<your-company-name>",
    "role": "<your-role>"
  }
}

Then run:

curl -s -X POST "https://api.resend.com/contacts" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Retrieve Contact

curl -s "https://api.resend.com/contacts/<your-contact-id>" --header "Authorization: Bearer $RESEND_TOKEN"

List Contacts

curl -s "https://api.resend.com/contacts" --header "Authorization: Bearer $RESEND_TOKEN"

List Contacts with Pagination

curl -s "https://api.resend.com/contacts?limit=50" --header "Authorization: Bearer $RESEND_TOKEN"

Update Contact

Write to /tmp/resend_request.json:

{
  "first_name": "<your-new-first-name>",
  "unsubscribed": true
}

Then run:

curl -s -X PATCH "https://api.resend.com/contacts/<your-contact-id>" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Delete Contact

curl -s -X DELETE "https://api.resend.com/contacts/<your-contact-id>" --header "Authorization: Bearer $RESEND_TOKEN"

Domains

List Domains

curl -s "https://api.resend.com/domains" --header "Authorization: Bearer $RESEND_TOKEN"

Retrieve Domain

curl -s "https://api.resend.com/domains/<your-domain-id>" --header "Authorization: Bearer $RESEND_TOKEN"

Create Domain

Write to /tmp/resend_request.json:

{
  "name": "<your-domain-name>"
}

Then run:

curl -s -X POST "https://api.resend.com/domains" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Verify Domain

curl -s -X POST "https://api.resend.com/domains/<your-domain-id>/verify" --header "Authorization: Bearer $RESEND_TOKEN"

Delete Domain

curl -s -X DELETE "https://api.resend.com/domains/<your-domain-id>" --header "Authorization: Bearer $RESEND_TOKEN"

API Keys

List API Keys

curl -s "https://api.resend.com/api-keys" --header "Authorization: Bearer $RESEND_TOKEN"

Create API Key

Write to /tmp/resend_request.json:

{
  "name": "<your-key-name>"
}

Then run:

curl -s -X POST "https://api.resend.com/api-keys" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Create API Key with Permissions

Write to /tmp/resend_request.json:

{
  "name": "<your-key-name>",
  "permission": "sending_access"
}

Then run:

curl -s -X POST "https://api.resend.com/api-keys" --header "Authorization: Bearer $RESEND_TOKEN" --header "Content-Type: application/json" -d @/tmp/resend_request.json

Delete API Key

curl -s -X DELETE "https://api.resend.com/api-keys/<your-api-key-id>" --header "Authorization: Bearer $RESEND_TOKEN"

Email Parameters Reference

Parameter	Type	Description
`from`	string	Sender email (required). Format: `"Name <email@domain.com>"`
`to`	string[]	Recipients (required). Max 50 addresses
`subject`	string	Email subject (required)
`html`	string	HTML content
`text`	string	Plain text content
`cc`	string[]	CC recipients
`bcc`	string[]	BCC recipients
`reply_to`	string	Reply-to address
`scheduled_at`	string	Schedule time (ISO 8601 or natural language)
`tags`	array	Custom tags for tracking
`attachments`	array	File attachments (max 40MB total)

Response Codes

Status	Description
`200`	Success
`400`	Invalid parameters
`401`	Missing API key
`403`	Invalid API key
`404`	Resource not found
`429`	Rate limit exceeded (2 req/sec)
`5xx`	Server error

Guidelines

1. Rate Limits: Default is 2 requests per second; implement backoff for 429 errors 2. Sender Domain: Use verified domains for production; onboarding@resend.dev for testing 3. Batch Emails: Use /emails/batch for sending to multiple recipients efficiently 4. Idempotency: Use Idempotency-Key header to prevent duplicate sends 5. Scheduling: Use natural language (in 1 hour) or ISO 8601 format for scheduled_at