API guide

Note: this article refers to how we interact with the Stripe API. For info on getting your EasyPost API key, see Connect your EasyPost API key to Parcelcraft.

Parcelcraft doesn't require any software programming skills to use, but for those who have a need to interact with Parcelcraft programmatically, we have a variety of ways to interact with your shipment data. Parcelcraft makes extensive use of the Stripe API and the EasyPost API.

Stripe API

Parcelcraft adds metadata to your PaymentIntents, Invoices, Shipping Rates and Products to manage shipment status and default options.

Stripe Invoice and PaymentIntents metadata

When a checkout session completes (including payments made through payment links) or an invoice is finalized, our app automatically determines whether the order is for a physical product or for a service. We use your Stripe Product shippable status, or the shipping rate selected at checkout or attached to the invoice, to indicate via your Stripe metadata whether the order is shippable. No invoice is required. Our app will automatically add metadata to the PaymentIntent, and to the invoice when one exists, prior to shipment. If the order uses a shipping rate or if any product in the order is shippable, metadata with a key of "ship_status" and a value of "unshipped" will be added. Orders that are marked as unshipped will appear in the unified Orders list in Parcelcraft with an Unshipped status.

How ship status is written: when you change a ship status in the Parcelcraft app, the change is written through the Parcelcraft backend, which updates the order and mirrors the ship_status metadata to both the PaymentIntent and its Invoice (when one exists). This keeps the two objects in sync — you'll see the same value on either one.

If you set ship_status yourself via the Stripe API, set it on the invoice: Stripe doesn't send apps an event for metadata-only changes to PaymentIntents, so a status written only to a payment isn't picked up until the status is next changed inside the Parcelcraft app.

Prior to shipment

Supported metadata prior to shipment

Metadata keyPossible metadata values
ship_statusunshipped The order appears in the Orders list with an Unshipped status
canceled The order appears in the Orders list with a Canceled status
shipped We assume this was shipped or hand delivered outside of the Parcelcraft app
back_ordered The order appears in the Orders list with a Back ordered status
unshippable The order is excluded from the Unshipped view. Used for orders that do not ship
(no value) We assume this is a non-shippable invoice or the status has not been determined
is_returntrue (as a string) when a shipment is created, the shipment will be created as a return shipment by default

After shipment

PaymentIntents and Invoices will mirror each other's metadata values at the time of shipment. If no invoice exists for a PaymentIntent, only the PaymentIntent metadata will reflect these values:

Metadata keyMetadata value example
ship_date2024-05-24T18:07:34Z
ship_statusshipped (Could also be unshipped, canceled, back_ordered, or unshippable. If the ship_status metadata does not exist on the invoice or payment, we assume it is not shippable)
shipment_idshp_bdf04565433... The EasyPost shipment ID
tracking_number9434600110368044455854
tracking_URLhttps://tools.usps.com/go/TrackConfirmAction_input?origTrackNum=9434600110368044455854
service_nameUSPS Ground Advantage
is_returntrue (as a string) the shipment was a return label (this metadata key will be absent if the shipment was not a return shipment)

Stripe Product metadata

All values are optional, but having product defaults helps prepare your shipment according to your product metadata.

Metadata keyMetadata value example
customs_descriptionSIM card
origin_countryUS
tariff_code8523.52.00
weight0.44
weight_unitEither gram, ounce, pound, or kilogram. Defaults to ounce
is_returntrue Defaults to null or false

Stripe Shipping Rate metadata

All values are optional, but having shipping rate defaults helps prepare your shipment according to your shipping rate metadata if you use shipping rates in your Stripe Invoices.

Metadata keyExampleDescription
carrier_idca_c38cd24...Your EasyPost carrier ID
package_codeLetterThe package code for your EasyPost carrier. Defaults to Package. See https://www.easypost.com/carriers
packaging_weight.26The weight of your packaging. The final weight of your package will be based on your product weight and product quantity
packaging_weight_unitounceEither gram, ounce, pound, or kilogram. Defaults to ounce
service_codePriorityThe compatible service level (Ground, Priority, NextDayAir) for your EasyPost carrier. See https://www.easypost.com/carriers
width10The default packaging width in the dimension unit (inches or centimeters) as set in your Parcelcraft carrier settings
length5See above
height8See above

Stripe Customer metadata

  • Some addresses (for example shared office spaces) may require a company name for a successful shipment.
  • If your Stripe customer record has a company metadata value, we'll automatically add their company name to the customer's shipping address when you create a shipment.
  • You usually don't need this metadata. When you ship from the Orders list in the Parcelcraft app, we use the business name Stripe collects at checkout automatically — the company metadata is only a fallback, and is mainly useful for shipments created from invoice, payment, or customer detail pages.
  • Tip: you can also capture a company name with a checkout custom field and map it to the company line. See Print checkout custom fields on labels.
Metadata keyMetadata value example
companyAcme Incorporated

Parcelcraft reads the custom_fields array on completed checkout sessions (including sessions created by payment links). When custom field mapping is enabled, the values your customer entered are applied to shipments created from that order:

Mapped positionShipment field
Company (in address)The company line of the recipient address
Line 1 custom textThe shipment's print_custom_1 option
Line 2 custom textThe shipment's print_custom_2 option

Fields are matched by their custom field key, so a key reused across payment links only needs to be mapped once. See Print checkout custom fields on labels for setup instructions.