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General Properties

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projectId
string
required
GUID that identifies your project. Found in the developer console in the detail view for a registered collection.
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collectionId
string
required
Identifier for your collection. Found in the developer console on the detail view for a registered collection.
Previously named clientId.
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environment
string
required
Indicates whether you’re using the staging or production environment.staging production
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currency
string
Indicates the preferred currency for the checkout.USD AUD EUR GBP HKD INR JPY KRW SGD VND
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locale
string
Indicates the preferred language for the checkout.en-US, de-DE, es-ES, fr-FR, it-IT, ja-JP, ko-KR, pt-PT, ru-RU th-TH tr-TR uk-UA vi-VN zh-CN zh-TW, Klingon
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mintConfig
object
required
The mintConfig object should not be included for Solana collections.
mintConfig Subproperties
You must include any custom arguments required by your contract, using the exact same name.
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totalPrice
string
required
The total price of the digital assets being minted (excluding gas/network fees). If the user is buying multiple digital assets, this should be the total price of all assets combined (price * quantity).
If your collection is set up using an external platform charging additional fees, please add them to the price. For example, if you contract charges 0.01 ETH and the provider charges 0.002 ETH, then set the price at 0.012 ETH.
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type
string
erc-721 erc-1155
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Your Own Quantity Argument
string
You must include this parameter if your contract has a quantity argument indicating how many digital assets to mint.
The name of this property must match the name of the argument in your mint function.
For example, if your contract has a _mintAmount argument, you will use the property name _mintAmount in the mintConfig object.
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Additional Arguments
Add any additional arguments required by your contract, using the exact same name. For example, the function below would require adding a _customNumber property to mintConfig.
Solidity
  function mint(
    address to,
    uint256 _mintAmount_,
    uint256 _customNumber) public payable {
    // ...
  }
Do not pass the recipient argument (e.g. to in the example above) in the mintConfig. Crossmint auto-fills this value with the user’s address. If you wish to configure a custom recipient address, follow the instructions on the section below.
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webhookPassthroughData
string | object
These arguments will be passed through via webhooks. You can use this to add attribution to a purchase (e.g. a user ID or advertising cookie).
  <CrossmintEmbeddedCheckout
    // other properties removed for brevity
    webhookPassthroughData={{
      customId: "abc123",
      orderNumber: "789def"
    }}
  />

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Optional Product Specific Properties

The following properties are specific to the CrossmintPayButton:
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mintTo
string
Indicates the wallet address where the digital assets should be delivered. It can be a standard ethereum address or a base58 Solana address.When left empty, the digital assets will be delivered to the buyer’s . If they don’t have one, one will be created on-the-fly.
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emailTo
string
Indicates the email address of the buyer. When provided, Crossmint will deliver the digital assets to the buyer’s , associated with that address. If they don’t have one, one will be created on-the-fly.When left empty, Crossmint will ask the buyer for their email address and do the same as above.
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emailLogin
string
Indicates the email where the user will receive the purchase receipt. It pre-fills the email input field on the buyer’s UI, and freezes it so they can’t modify it.When left empty, Crossmint will ask the buyer for their email address.
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checkoutProps
object
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display
string
Instructs the digital asset checkout to display in a specific way.popup new-tab same-window
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paymentMethods
array
Indicates which payment methods will be available.fiat ETH SOL