THe brand of the card. Can be Visa, American Express, MasterCard, Discover, JCB, Diners Club, or Unknown.

Two letter ISO code representing the country of the card.

Two digit number representing the card's expiration month.

Four digit number representing the card's expiration year.

Uniquely identifies this particular card number. You can use this attribute to check whether two customers who've signed up with you are using the same card numbe.

Card funding type. Can be credit, debit, prepaid, or unknown.

Amount intended to be collected by this payment.

Amount in cents captured (can be less than the amount attribute on the charge if a partial capture was made).

Amount in cents refunded (can be less than the amount attribute on the charge if a partial refund was made).

If the charge was created without capturing, this Boolean represents whether it is still uncaptured or has since been captured.

Time at which the object was created. ISO 8601 format.

The customer this charge is for if one exists.

Message to user further explaining reason for charge failure if available.

The invoice this charge is for if one exists.

true if the charge succeeded, or was successfully authorized for later capture.

The payment intent that generated this charge.

Whether the charge has been fully refunded. If the charge is only partially refunded, this attribute will still be false.

A list of refunds that have been applied to the charge.

Whether the charge was created in test mode.

A string that identifies the resulting payment as part of a group

Whether promotion codes can be applied to the checkout session.

The subtotal amount of the checkout session.

The total amount of the checkout session.

If set, Checkout displays a back button and customers will be directed to this URL if they decide to cancel payment and return to your website.

A list of captures associated with the checkout session.

A unique string to reference the Checkout Session. This can be a customer ID, a cart ID, or similar, and can be used to reconcile the session with your internal systems.

The ID of the customer for this Session. This object is expandable if expand_customer is set.

The customer values to prefill the customer details in the checkout page.

The time at which the Checkout Session will expire.

Whether the Checkout Session is HSA/FSA eligible.

The ID of the invoice this Checkout Session is for. This object is expandable if expand_invoice is set.

Whether a letter of medical necessity is required for this Checkout Session.

The payment intent that belongs to this Checkout Session. This object is expandable if expand_payment_intent is set.

The URL to redirect to access the checkoout session.

The refunds associated with this Checkout Session.

The ID of the SetupIntent for this Checkout Session. This object is expandable if expand_setup_intent is set.

When set, present options for shipping address collection from a customer.

Shipping information for this Checkout Session.

The shipping rate options applied to this Session.

If this checkout session contains both items that are eligible for HSA/FSA and items that are not, This will be the ID of the split cart object. This object is expandable if expand_split_cart is set.

The ID of the subscription this Checkout Session is for. This object is expandable if expand_subscription is set.

The data that will be used to create a subscription. This is only avaiable via expand

The URL the customer will be directed to after the payment or subscription creation is successful.

Whether the Checkout Session is in test mode.

Tax and discount details for the computed total amount.

The type of visit this Checkout Session is for.

Origin of where the checkout session was generated

Applies to the first charge from a subscription with this coupon applied.

Applies to charges in the first duration_in_months months from a subscription with this coupon applied.

Applies to all charges from a subscription with this coupon applied.

A positive integer representing the amount to subtract from an invoice total (required if percent_off is not passed).

An object containing directions for what this Coupon will apply discounts to.

Specifies how long the discount will be in effect if used on a subscription. Defaults to once.

Required only if duration is repeating, in which case it must be a positive integer that specifies the number of months the discount will be in effect.

A positive integer specifying the number of times the coupon can be redeemed before it’s no longer valid.

A positive float larger than 0, and smaller or equal to 100, that represents the discount the coupon will apply (required if amount_off is not passed).

The product's description, a short blurb meant to be displayed to the customer.

The product's GTIN. If provided, this will be used to check whether the product is on the eligible product list.

The product's HSA/FSA eligibility that you are requesting.

The product's name, meant to be displayed to the customer.

If the product is HSA/FSA eligible through private lable, this should be provided.

The product's UPC code. If provided, this will be used to check whether the product is on the eligible product list.

A URL of a publicly-accessible image of the product.

If the product is eligible via LOMN, the visit type that was provided from the Flex team should be provided.

The customer-facing code. Regardless of case, this code must be unique across all active

The customer that can be associated with the promo code. If null, the promo code can be redeemed by any customer.

The number of times the promo code can be redeemed.

Whether the customer was created in test mode.

Export defines the export_type and filters needed to export a file Export types are supported for Payments, Subscriptions, Customers, CheckoutSession

The date the export functionality was completed.

The date the export functionality was started.

HttpError

The id of the latest charge for this invoice, if any.

Either charge_automatically or send_invoice. When charging automatically, Flex will attempt to pay this invoice using the default payment method attached to the customer. When sending an invoice, Flex will email this invoice to the customer with payment instructions.

The id of the customer this invoice is for.

The payment intent associated with this invoice. The payment intent is created when the invoice is finalized.

The subscription that this invoice was prepared for.

Whether or not the invoice was created in test mode.

The total amount of the invoice in cents.

Specifies whether the promo code is currently active.

Allows the session to be completed using a promotion code.

A list of items the customer is purchasing. Use this parameter to pass one-time or recurring Prices.

The ID of the Price object. One of price or price_data is required.

Data used to generate a new Price object inline. One of price or price_data is required.

The quantity of the line item being purchased.

The ID of the product that this price will belong to.

The recurring components of a price such as interval and trial period days.

A positive integer in cents (or 0 for a free price) representing how much to charge.

The amount of the payment intent in cents.

The amount that can be captured from this PaymentIntent.

The capture method of the payment intent.

The customer associated with the payment intent.

The invoice associated with the payment intent.

The latest charge associated with the payment intent.

The unique identifier for the payment intent.

The payment method associated with the payment intent.

Whether the payment intent is in test mode.

The data related to the amount being transferred.

Indicates the parameters to be passed to PaymentIntent creation during checkout

Whether the payment link is currently active. If false, customers visiting the URL will be shown a page saying that the link has been deactivated.

Provided or generated label for the payment link.

The line items representing what is being sold.

Indicates the parameters to be passed to PaymentIntent creation during checkout.

Whether we want to collect shipping details at checkout time

The shipping rate options applied to the session.

Whether the payment link was created in test mode

The public URL that can be shared with customers.

Billing information associated with the PaymentMethod that may be used or required by particular types of payment methods.

The id of the cusomter to which this payment method is attached. This is only populated if the PaymentMethod is attached to a Customer.

Whether this PaymentMethod is in test mode.

Prices define the unit cost and (optional) billing cycle for both recurring and one-time purchases of products. Prices belong to a given product. Different physical goods or levels of service should be represented by products, and pricing options should be represented by prices.

the product this price belongs to. Note that this is not an expandable field.

The number of days the customer has to pay the invoice generated by this price after the subscription becomes due.

The type of the price. The type can be one of: `one-time` (a one-time price for a product) or `recurring` (a recurring price for a product).    /// The shopify product variant id that this price is associated with.

The unit amount in cents to be charged, represented as a whole integer.

A Product defines what you sell. Flex creates the The product can either be not eligible, elegible via auto-substantiation or elegible via letter of medical necessity.

Determines if the product is active or not.

The elegibility of the product for HSA/FSA.

Whether the product is in test mode or not.

The visit type of the product if a letter of medical necessity is required.

A promo code represents a code for a coupon that can be redeemed by a customer.

Whether the promo code is currently active.

The coupon that the promo code represents.

Coupon

The date and time the promo code was created.

The number of times the promo code has been redeemed.

The number of trial period days before the customer is charged for the first time.

The time at which the refund was created. ISO 8601 format.

The ID of the payment intent that the refund is associated with

Whether the refund was created in test mode

The ID of the Customer this SetupIntent belongs to.

An arbitrary string attached to the setup intent.

Payment method used with this SetupIntent.

Status of the SetupIntent. One of `requires_payment_method`, `requires_confirmation`, `requires_action`, `processing`, `succeeded`, or `canceled`.

Whether or not the setup intent is in test mode.

Indicates how the payment method is intended to be used in the future.

A checkout session consists of 3 states. Open - The session has been created but not paid for. Paid - Deprecated. Complete - The LOMN was submitted (if applicable) and payment was successful.

If the subscription has been canceled with the at_period_end flag set to true, cancel_at_period_end on the subscription will be true. You can use this attribute to determine whether a subscription that has a status of active is scheduled to be canceled at the end of the current period.

End of the current period that the subscription has been invoiced for.

Start of the current period that the subscription has been invoiced for.

The ID of the customer who owns the subscription.

The ID of the latest invoice generated for this subscription.

The proration behavior for the subscription.

Possible values are incomplete, incomplete_expired, trialing, active, past_due, canceled, or unpaid.

Whether the subscription is in test mode.

This is the sum of all the discount amounts.

This is the sum of all the iias line items.

This is the sum of all the shipping amounts.

A date in the future at which the subscription will automatically get canceled. This is in ISO 8601 format, example: 2026-02-07T18:26:40+00:00

Whether this subscription should cancel at the end of the current period (current_period_end)

Proration behavior Determines how to handle [prorations](https://stripe.com/docs/subscriptions/billing-cycle#prorations) when the billing cycle changes (e.g., when switching plans, resetting `billing_cycle_anchor=now`, or starting a trial), or if an item's `quantity` changes. The default value is `create_prorations`.

When this subscription ends This is in ISO 8601 format, example: 2026-02-07T18:26:40+00:00

A capture represents a charge that has been captured from a customer's account. You can capture a charge in full or in part.

The total amount captured from the capture request

The amount captured that is associated with this specific capture item

The unique identifier for the capture item.

The created at timestamp for the capture item

The price id associated with the capture item

A coupon contains information about a percent-off or amount-off discount you might want to apply to a customer. Coupons may be applied to subscriptions and checkout sessions.

Amount that will be taken off the subtotal of any invoices for this customer.

An object containing the ID of the product that the coupon can be applied to.

One of forever, once, and repeating. Describes how long a customer who applies this coupon will get the discount.

If duration is repeating, the number of months the coupon applies. Null if coupon duration is forever or once.

Maximum number of times this coupon can be redeemed, in total, across all customers, before it is no longer valid.

Name of the coupon displayed to customers.

Percent that will be taken off the subtotal of any invoices for this customer for the duration of the coupon.

Number of times this coupon has been applied to a customer.

Taking account of the above properties, whether this coupon can still be applied to a customer.

Validation errors have their own schema to provide context for invalid requests eg. mismatched types and out of bounds values. There may be any number of these per 422 UNPROCESSABLE ENTITY error.

The location as a [`Vec`] of [`String`]s -- often in the form `["body", "field_name"]`, `["query", "field_name"]`, etc. They may, however, be arbitarily deep.

The message accompanying the validation error item.

The type of error, often "type_error" or "value_error", but sometimes with more context like as "value_error.number.not_ge"

Flex API

expand

checkout_session

limit

offset

interval

payment_intent

status

customer

email

subscription

client_reference_id

expand_customer

expand_payment_intent

expand_subscription

Returns a list of line items corresponding to a checkout session.

name

starting_after

ending_before

Returns a list of Issuing Dispute objects.

Returns a list of exports for the authenticated partner.

Retrieves the export details with the given ID.

Retrieves the details of a PaymentIntent that has previously been created.

Send a receipt to customer for the associated payment

active

product

expand_product

Creates a new price for an existing product. The price can be recurring or one-time.

Updates the specified price by setting the values of the parameters passed. Any parameters not provided are left unchanged.

Events

Flex API Reference

Retry Event

Parameters