curl -X POST 'https://api.resend.com/webhooks' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0' \
  -H 'Content-Type: application/json' \
  -d '{
  "endpoint": "https://webhook.example.com/handler",
  "events": [
    "email.sent",
    "email.delivered",
    "email.bounced",
    "email.suppressed"
  ]
}'

# POST /webhooks (Resend API)
Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-09-03

> Create a new webhook

## Critical Gotchas
* All requests must include a `User-Agent` header (e.g. `User-Agent: my-app/1.0`) or the API returns HTTP 403.
* The `to` field is an array of strings, even when sending to a single recipient.

## cURL
curl -X POST 'https://api.resend.com/webhooks' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0' \
  -H 'Content-Type: application/json' \
  -d '{"endpoint":"https://webhook.example.com/handler","events":["email.sent"]}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| endpoint | body | string | Yes | The URL where webhook events will be sent. |
| events | body | string[] | Yes | Array of event types to subscribe to. |

## Response (200 OK)
{"object":"webhook","id":"479e3145-dd38-476b-932c-529ceb705947","signing_secret":"whsec_..."}

---
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POST

/webhooks

Resend API

Create a new webhook

Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-09-03 · upstream hash matched

Actions

Agents: curl -H "Accept: text/markdown" this URL
→ 197 tokens · Vary: Accept

Critical gotchas

All requests must include a User-Agent header (e.g. User-Agent: my-app/1.0) or the API returns HTTP 403.

The to field is an array of strings, even when sending to a single recipient.

cURL

curl -X POST 'https://api.resend.com/webhooks' \  -H "Authorization: Bearer $RESEND_API_KEY" \  -H 'User-Agent: my-app/1.0' \  -H 'Content-Type: application/json' \  -d '{  "endpoint": "https://webhook.example.com/handler",  "events": [    "email.sent",    "email.delivered",    "email.bounced",    "email.suppressed"  ]}'

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Parameters

Name	In	Type	Required	Description
endpoint	body	string	Yes	The URL where webhook events will be sent.
events	body	string[]	Yes	Array of event types to subscribe to.

Response 200 OK

{
  "object": "webhook",
  "id": "479e3145-dd38-476b-932c-529ceb705947",
  "signing_secret": "whsec_..."
}