New Features
Message-Level Encryption (MLE)

- Hybrid Encryption: Uses AES-GCM (for payload encryption) and RSA-OAEP-256 (for key encryption) to ensure confidentiality even if network traffic is intercepted.
-
Public Key Registration: Register your RSA public key with Method via a
.well-knownendpoint or direct upload. -
Encrypted Requests & Responses: Send encrypted payloads using the
Method-MLE: jweheader; Method encrypts responses using your public key. - Key Management: Support for key rotation, deprecation, deletion, and webhook notifications for Method key changes.
Card Brand API

Available when passing
Method-Version: 2025-07-04 in the request header.Previous
Previous
New
New
networkandissuerare now nested inside each brand object.- Added
card_product_id,description, andtypefields. - Removed
last4andsharedfields.
Card Products API
We’ve added a newCard Products directory accesible via our API allowing you to retrieve all Card Brand objects associated with a given Card Product.
Available when passing
Method-Version: 2025-07-04 in the request header.Example Request
Example Request
cURL
Example Response
Example Response
Improvements
Connect API
We now support asynchronous Connect requests. You’ll receive aconnect.available webhook when an Async Connect is completed. Async Connect requests can be created by either:
- Setting the
Prefer: respond-asyncheader - Specifying
productsand / orsubscriptionsin the request body
requested_products and requested_subscriptions fields in the response body.
Example Request
Example Request
cURL
Example Response after Connect is completed
Example Response after Connect is completed
Webhook API
We’ve added a newrefs object to webhook payloads. This object contains the entity ID of the Entity that the webhook is related to.
Example Webhook Payload
Example Webhook Payload
card_brand.availableconnect.availablemethod_jwk.createmethod_jwk.update
Entity and Account Products
Theproduct_id field in the Product object and the Retrieve endpoint are now deprecated. We’ve added the latest_successful_request_id field to the Product object. This field will contain the ID of the most recently successful Product resource.
For more information, please refer to the Entity Products API and Account Products API.