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	Notes
emails/send	send	POST	/emails	also accepts post:/emails
emails/send-batch	send	POST	/emails/batch	also accepts post:/emails/batch
broadcasts/send	send	POST	/broadcasts/{id}/send	also accepts post:/broadcasts/{id}/send
emails/cancel	write	POST	/emails/{email_id}/cancel	also accepts post:/emails/{email_id}/cancel
emails/list	read	GET	/emails	also accepts get:/emails
emails/get	read	GET	/emails/{email_id}	also accepts get:/emails/{email_id}
emails/list-receiving	read	GET	/emails/receiving	also accepts get:/emails/receiving
broadcasts/create	write	POST	/broadcasts	also accepts post:/broadcasts
broadcasts/update	write	PATCH	/broadcasts/{id}	also accepts patch:/broadcasts/{id}
broadcasts/remove	delete	DELETE	/broadcasts/{id}	also accepts delete:/broadcasts/{id}
broadcasts/list	read	GET	/broadcasts	also accepts get:/broadcasts
contacts/create	write	POST	/contacts	also accepts post:/contacts
contacts/update	write	PATCH	/contacts/{id}	also accepts patch:/contacts/{id}
contacts/remove	delete	DELETE	/contacts/{id}	also accepts delete:/contacts/{id}
contacts/list	read	GET	/contacts	also accepts get:/contacts
audiences/create	write	POST	/audiences	also accepts post:/audiences
audiences/remove	delete	DELETE	/audiences/{id}	also accepts delete:/audiences/{id}
audiences/list	read	GET	/audiences	also accepts get:/audiences
templates/create	write	POST	/templates	also accepts post:/templates
templates/remove	delete	DELETE	/templates/{id}	also accepts delete:/templates/{id}
domains/create	admin	POST	/domains	also accepts post:/domains
domains/verify	admin	POST	/domains/{domain_id}/verify	also accepts post:/domains/{domain_id}/verify
domains/update	admin	PATCH	/domains/{domain_id}	also accepts patch:/domains/{domain_id}
domains/remove	admin, delete	DELETE	/domains/{domain_id}	also accepts delete:/domains/{domain_id}
domains/list	read	GET	/domains	also accepts get:/domains
api-keys/create	admin	POST	/api-keys	also accepts post:/api-keys
api-keys/remove	admin, delete	DELETE	/api-keys/{api_key_id}	also accepts delete:/api-keys/{api_key_id}
api-keys/list	read	GET	/api-keys	also accepts get:/api-keys
webhooks/create	admin	POST	/webhooks	also accepts post:/webhooks
webhooks/remove	admin, delete	DELETE	/webhooks/{webhook_id}	also accepts delete:/webhooks/{webhook_id}
webhooks/list	read	GET	/webhooks	also accepts get:/webhooks