Resend

Overview

Use Resend credentials to make authenticated API calls through Alter Vault without exposing API keys in code.

Property	Value
Provider ID	resend
Category	Communication
Credential Type	Bearer Token

Step 1: Get Credentials

Log in to the Resend Dashboard

Log in to the Resend Dashboard at resend.com.

Navigate to API Keys

Navigate to API Keys at resend.com/api-keys.

Create an API Key

Click ‘Create API Key’ and set permissions.

Copy your API key

Copy the generated API key.

Warning

Never share credentials publicly. Store them securely and only enter them in the Alter Vault Developer Portal.

Step 2: Add to Alter Vault

Open the Developer Portal

Go to portal.alterauth.com and navigate to the application.

Add Resend

Go to Managed Secrets > Add Provider > Resend.

Enter credentials

Paste your API Key into the credential field.

Save

Click Save. You’ll receive a grant_id to use with the SDK.

Using in Code

response = await alter_app.request(
    HttpMethod.POST,
    "https://api.resend.com/emails",
    grant_id="YOUR_GRANT_ID",
    json={
        "from": "Sender <sender@YOUR_VERIFIED_DOMAIN>",
        "to": ["recipient@example.com"],
        "subject": "Hello",
        "html": "<p>Hello from Alter</p>",
    },
)

Policy-cataloged operations

Alter policy rules can target these attested operations and families for operation-level and parameter-aware controls.

Operation ID	Families	Method	Provider path
post:/emails	send	POST	/emails
post:/emails/batch	send	POST	/emails/batch
post:/broadcasts/{id}/send	send	POST	/broadcasts/{id}/send
post:/emails/{email_id}/cancel	write	POST	/emails/{email_id}/cancel
get:/emails	read	GET	/emails
get:/emails/{email_id}	read	GET	/emails/{email_id}
get:/emails/receiving	read	GET	/emails/receiving
post:/broadcasts	write	POST	/broadcasts
patch:/broadcasts/{id}	write	PATCH	/broadcasts/{id}
delete:/broadcasts/{id}	delete	DELETE	/broadcasts/{id}
get:/broadcasts	read	GET	/broadcasts
post:/contacts	write	POST	/contacts
patch:/contacts/{id}	write	PATCH	/contacts/{id}
delete:/contacts/{id}	delete	DELETE	/contacts/{id}
get:/contacts	read	GET	/contacts
post:/audiences	write	POST	/audiences
delete:/audiences/{id}	delete	DELETE	/audiences/{id}
get:/audiences	read	GET	/audiences
post:/templates	write	POST	/templates
delete:/templates/{id}	delete	DELETE	/templates/{id}
post:/domains	admin	POST	/domains
post:/domains/{domain_id}/verify	admin	POST	/domains/{domain_id}/verify
patch:/domains/{domain_id}	admin	PATCH	/domains/{domain_id}
delete:/domains/{domain_id}	admin, delete	DELETE	/domains/{domain_id}
get:/domains	read	GET	/domains
post:/api-keys	admin	POST	/api-keys
delete:/api-keys/{api_key_id}	admin, delete	DELETE	/api-keys/{api_key_id}
get:/api-keys	read	GET	/api-keys
post:/webhooks	admin	POST	/webhooks
delete:/webhooks/{webhook_id}	admin, delete	DELETE	/webhooks/{webhook_id}
get:/webhooks	read	GET	/webhooks