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MakePay Java SDK

Official Java SDK for MakePay server-side integrations. Use it to create crypto payment links, donation pages, invoices, bookkeeping records, subscriptions, POS terminals, products, Simple Shop storefronts, customer portals, branded domains, and signed webhook handlers.

Public source: https://github.com/makecryptoio/makepay-java-sdk

Install

dependencies {
implementation("io.makecrypto:makepay:0.3.0")
}
<dependency>
<groupId>io.makecrypto</groupId>
<artifactId>makepay</artifactId>
<version>0.3.0</version>
</dependency>

The SDK targets Java 11 or newer and uses the standard JDK HTTP client.

Configure

Create a MakePay API key in MakeCrypto and keep the secret on your server only.

importio.makecrypto.makepay.MakePayClient;
importio.makecrypto.makepay.MakePayClientOptions;
MakePayClientmakepay = newMakePayClient(
MakePayClientOptions.builder()
.keyId(System.getenv("MAKEPAY_KEY_ID"))
.keySecret(System.getenv("MAKEPAY_KEY_SECRET"))
.build()
);

The client sends X-MakeCrypto-Key-Id and X-MakeCrypto-Key-Secret headers to the MakePay partner API.

Payment Links

importcom.fasterxml.jackson.databind.JsonNode;
importjava.util.Map;
JsonNoderesponse = makepay.createPaymentLink(Map.of(
"title", "Order #1042",
"description", "Checkout for order #1042",
"amount", "129.99",
"currency", "USDT",
"orderId", "order_1042",
"customerEmail", "buyer@example.com",
"returnUrl", "https://merchant.example/orders/1042",
"successUrl", "https://merchant.example/orders/1042/success",
"failureUrl", "https://merchant.example/orders/1042/pay",
"expirationTime", "12h"
));
StringpublicUrl = response.path("paymentLink").path("publicUrl").asText();

Read, update, and email existing links:

makepay.listPaymentLinks();
makepay.getPaymentLink("PAYMENT_LINK_UID");
makepay.updatePaymentLink("PAYMENT_LINK_UID", Map.of("status", "paused"));
makepay.sendPaymentRequestEmail("PAYMENT_LINK_UID", "buyer@example.com");

Donations

Donation pages are flexible-amount payment links with a public donation slug.

JsonNodedonation = makepay.createDonationLink(Map.of(
"title", "Spring campaign",
"description", "Support the 2026 spring fundraiser.",
"defaultAmountUsd", "25",
"minimumAmountUsd", "5",
"donationSlug", "spring-campaign"
));
makepay.listDonationLinks();
makepay.getDonationLink("DONATION_UID");
makepay.updateDonationLink("DONATION_UID", Map.of("status", "paused"));

Anonymous Payment Links

Anonymous links do not use a MakePay API key. They require an explicit settlement route because MakePay cannot read merchant wallet settings.

importjava.util.List;
JsonNodeanonymous = MakePayClient.createAnonymousPaymentLink(Map.of(
"amount", "25",
"settlement", Map.of(
"currency", "USDT",
"priorities", List.of(Map.of(
"chain", "ETH",
"address", "0xYourSettlementWallet",
"asset", "ETH.USDT-0xdAC17F958D2ee523a2206206994597C13D831ec7"
))
),
"title", "Invoice #1042",
"webhookUrl", "https://merchant.example/webhooks/makepay"
));

Checkout URLs And Embeds

Use hosted checkout for redirects, or the embed helpers when your frontend keeps the shopper on the merchant site.

StringpaymentUid = response.path("paymentLink").path("uid").asText();
StringhostedUrl = makepay.hostedCheckoutUrl(paymentUid);
StringembedUrl = makepay.embeddedCheckoutUrl(
paymentUid,
"https://merchant.example"
);
StringbuttonHtml = makepay.embedButtonHtml(paymentUid, "Pay with crypto");
StringiframeHtml = makepay.iframeHtml(paymentUid, "Secure MakePay checkout");
StringdonationHostedUrl = makepay.hostedDonationUrl("spring-campaign");
StringdonationEmbedUrl = makepay.embeddedDonationUrl(
"spring-campaign",
"https://merchant.example"
);

Customers And Subscriptions

makepay.upsertCustomer(Map.of(
"email", "buyer@example.com",
"name", "Buyer Example",
"clientId", "crm_123"
));
makepay.createCustomerPortal("CUSTOMER_ID", Map.of(
"returnUrl", "https://merchant.example/account"
));
makepay.createSubscription(Map.of(
"amountUsd", "29",
"customerEmail", "buyer@example.com",
"label", "Monthly plan",
"billingIntervalUnit", "month",
"billingIntervalCount", 1
));

POS, Products, And Simple Shop

JsonNodeterminal = makepay.createPosTerminal(Map.of(
"name", "Front counter",
"pin", "1234",
"catalogEnabled", true
));
makepay.createProduct(Map.of(
"name", "Digital guide",
"productType", "digital",
"basePriceUsd", "19",
"shopSlug", "digital-guide",
"images", List.of(Map.of(
"url", "https://merchant.example/guide.png",
"alt", "Guide cover"
)),
"variants", List.of(Map.of("name", "PDF", "priceUsd", "19"))
));
makepay.createProductDownload("PRODUCT_UID", Map.of(
"fileName", "guide.pdf",
"contentType", "application/pdf",
"url", "https://merchant.example/downloads/guide.pdf"
));
makepay.updateShop(Map.of(
"slug", "merchant-shop",
"displayCurrency", "USD",
"checkoutMode", "hosted"
));
makepay.updateShopDomain("shop.merchant.example");
makepay.refreshShopDomain();
makepay.createShopCoupon(Map.of(
"code", "SPRING10",
"discountType", "percent",
"value", "10"
));
makepay.listShopOrders(Map.of("status", "paid", "limit", 25));

Invoices And Bookkeeping

JsonNodeinvoice = makepay.createBookkeepingInvoice(Map.of(
"title", "Invoice #1042",
"currency", "USD",
"issueDate", "2026-05-15",
"dueDate", "2026-05-30",
"counterparty", Map.of(
"name", "Buyer Example",
"email", "buyer@example.com"
),
"lineItems", List.of(Map.of(
"description", "Implementation services",
"quantity", "1",
"unitAmount", "500"
)),
"metadata", Map.of("orderId", "order_1042")
));
makepay.createBookkeepingInvoicePaymentLink("INVOICE_UID", Map.of(
"sendPaymentRequestEmail", true
));
makepay.createBookkeepingExpense(Map.of(
"title", "Hosting",
"amount", "49",
"currency", "USD",
"incurredOn", "2026-05-15"
));
makepay.uploadBookkeepingDocument(
Path.of("receipt.pdf"),
"receipt.pdf",
"receipt",
null,
"EXPENSE_UID"
);
makepay.getBookkeepingSummary();

Branding, Settings, And Operations

makepay.updateBranding(Map.of(
"brandName", "Merchant",
"websiteUrl", "https://merchant.example",
"supportEmail", "support@merchant.example",
"brandingAccentColor", "#14b8a6",
"paymentLinkDomain", "pay.merchant.example",
"emailSendingDomain", "mail.merchant.example"
));
makepay.getBranding();
makepay.refreshBrandingDomains("all");
makepay.getSettings();
makepay.updateSettings(Map.of(
"callbackUrl", "https://merchant.example/webhooks/makepay"
));
makepay.listDestinationAssets();
makepay.listWebhookRequests(Map.of("limit", 25));

Verify Webhooks

Read the exact raw body before parsing JSON.

importio.makecrypto.makepay.MakePayWebhook;
StringrawBody = requestBodyString;
Stringsignature = request.getHeader("x-makepay-signature");
JsonNodeevent = MakePayWebhook.parse(
rawBody,
signature,
System.getenv("MAKEPAY_WEBHOOK_SECRET")
);
if ("status_changed".equals(event.path("event").path("type").asText())) {
// Update your local order.
}

Use MakePayWebhook.verify(...) when you only need a boolean result.

Release

The package is published to Maven Central as io.makecrypto:makepay. The GitHub workflow Publish MakePay Java SDK builds, signs, creates a Central Portal deployment bundle, uploads it to Central Portal, and waits for the deployment to finish.

The canonical monorepo source lives in apps/plugins/java-sdk. The public repository at https://github.com/makecryptoio/makepay-java-sdk mirrors only the SDK files so developers can install or inspect it without the full MakeCrypto workspace.

Required GitHub secrets:

  • CENTRAL_PORTAL_USERNAME
  • CENTRAL_PORTAL_PASSWORD
  • MAVEN_SIGNING_KEY
  • MAVEN_SIGNING_PASSWORD

About

Official MakePay Java SDK. Cryptocurrency payment gateway for direct self-custody merchant-wallet settlement, decentralized swaps, and 70+ coin/20+ chain auto-conversion.

www.makepay.io

Topics

20-chains70-coinscrypto-payment-gatewaycrypto-paymentscryptocurrencydecentralized-swapsdirect-settlementmakepaymerchant-walletmultichainself-custodywallet-settlementweb3

Resources

Readme
MIT license

Contributing

Contributing

Security policy

Security policy
Activity
Custom properties

Stars

0 stars

Watchers

0 watching

Forks

0 forks
Report repository

Releases

Packages

Contributors

Languages

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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
Repository files navigation
MakePay Java SDK
Official Java SDK for MakePay server-side integrations. Use it to create crypto
payment links, donation pages, invoices, bookkeeping records, subscriptions,
POS terminals, products, Simple Shop storefronts, customer portals, branded
domains, and signed webhook handlers.
Public source: https://github.com/makecryptoio/makepay-java-sdk
Install
dependencies {
implementation("io.makecrypto:makepay:0.3.0")
}
<dependency>
<groupId>io.makecrypto</groupId>
<artifactId>makepay</artifactId>
<version>0.3.0</version>
</dependency>
The SDK targets Java 11 or newer and uses the standard JDK HTTP client.
Configure
Create a MakePay API key in MakeCrypto and keep the secret on your server only.
importio.makecrypto.makepay.MakePayClient;
importio.makecrypto.makepay.MakePayClientOptions;
MakePayClientmakepay = newMakePayClient(
MakePayClientOptions.builder()
.keyId(System.getenv("MAKEPAY_KEY_ID"))
.keySecret(System.getenv("MAKEPAY_KEY_SECRET"))
.build()
);
The client sends X-MakeCrypto-Key-Id and X-MakeCrypto-Key-Secret headers to
the MakePay partner API.
Payment Links
importcom.fasterxml.jackson.databind.JsonNode;
importjava.util.Map;
JsonNoderesponse = makepay.createPaymentLink(Map.of(
"title", "Order #1042",
"description", "Checkout for order #1042",
"amount", "129.99",
"currency", "USDT",
"orderId", "order_1042",
"customerEmail", "buyer@example.com",
"returnUrl", "https://merchant.example/orders/1042",
"successUrl", "https://merchant.example/orders/1042/success",
"failureUrl", "https://merchant.example/orders/1042/pay",
"expirationTime", "12h"
));
StringpublicUrl = response.path("paymentLink").path("publicUrl").asText();
Read, update, and email existing links:
makepay.listPaymentLinks();
makepay.getPaymentLink("PAYMENT_LINK_UID");
makepay.updatePaymentLink("PAYMENT_LINK_UID", Map.of("status", "paused"));
makepay.sendPaymentRequestEmail("PAYMENT_LINK_UID", "buyer@example.com");
Donations
Donation pages are flexible-amount payment links with a public donation slug.
JsonNodedonation = makepay.createDonationLink(Map.of(
"title", "Spring campaign",
"description", "Support the 2026 spring fundraiser.",
"defaultAmountUsd", "25",
"minimumAmountUsd", "5",
"donationSlug", "spring-campaign"
));
makepay.listDonationLinks();
makepay.getDonationLink("DONATION_UID");
makepay.updateDonationLink("DONATION_UID", Map.of("status", "paused"));
Anonymous Payment Links
Anonymous links do not use a MakePay API key. They require an explicit
settlement route because MakePay cannot read merchant wallet settings.
importjava.util.List;
JsonNodeanonymous = MakePayClient.createAnonymousPaymentLink(Map.of(
"amount", "25",
"settlement", Map.of(
"currency", "USDT",
"priorities", List.of(Map.of(
"chain", "ETH",
"address", "0xYourSettlementWallet",
"asset", "ETH.USDT-0xdAC17F958D2ee523a2206206994597C13D831ec7"
))
),
"title", "Invoice #1042",
"webhookUrl", "https://merchant.example/webhooks/makepay"
));
Checkout URLs And Embeds
Use hosted checkout for redirects, or the embed helpers when your frontend keeps
the shopper on the merchant site.
StringpaymentUid = response.path("paymentLink").path("uid").asText();
StringhostedUrl = makepay.hostedCheckoutUrl(paymentUid);
StringembedUrl = makepay.embeddedCheckoutUrl(
paymentUid,
"https://merchant.example"
);
StringbuttonHtml = makepay.embedButtonHtml(paymentUid, "Pay with crypto");
StringiframeHtml = makepay.iframeHtml(paymentUid, "Secure MakePay checkout");
StringdonationHostedUrl = makepay.hostedDonationUrl("spring-campaign");
StringdonationEmbedUrl = makepay.embeddedDonationUrl(
"spring-campaign",
"https://merchant.example"
);
Customers And Subscriptions
makepay.upsertCustomer(Map.of(
"email", "buyer@example.com",
"name", "Buyer Example",
"clientId", "crm_123"
));
makepay.createCustomerPortal("CUSTOMER_ID", Map.of(
"returnUrl", "https://merchant.example/account"
));
makepay.createSubscription(Map.of(
"amountUsd", "29",
"customerEmail", "buyer@example.com",
"label", "Monthly plan",
"billingIntervalUnit", "month",
"billingIntervalCount", 1
));
POS, Products, And Simple Shop
JsonNodeterminal = makepay.createPosTerminal(Map.of(
"name", "Front counter",
"pin", "1234",
"catalogEnabled", true
));
makepay.createProduct(Map.of(
"name", "Digital guide",
"productType", "digital",
"basePriceUsd", "19",
"shopSlug", "digital-guide",
"images", List.of(Map.of(
"url", "https://merchant.example/guide.png",
"alt", "Guide cover"
)),
"variants", List.of(Map.of("name", "PDF", "priceUsd", "19"))
));
makepay.createProductDownload("PRODUCT_UID", Map.of(
"fileName", "guide.pdf",
"contentType", "application/pdf",
"url", "https://merchant.example/downloads/guide.pdf"
));
makepay.updateShop(Map.of(
"slug", "merchant-shop",
"displayCurrency", "USD",
"checkoutMode", "hosted"
));
makepay.updateShopDomain("shop.merchant.example");
makepay.refreshShopDomain();
makepay.createShopCoupon(Map.of(
"code", "SPRING10",
"discountType", "percent",
"value", "10"
));
makepay.listShopOrders(Map.of("status", "paid", "limit", 25));
Invoices And Bookkeeping
JsonNodeinvoice = makepay.createBookkeepingInvoice(Map.of(
"title", "Invoice #1042",
"currency", "USD",
"issueDate", "2026-05-15",
"dueDate", "2026-05-30",
"counterparty", Map.of(
"name", "Buyer Example",
"email", "buyer@example.com"
),
"lineItems", List.of(Map.of(
"description", "Implementation services",
"quantity", "1",
"unitAmount", "500"
)),
"metadata", Map.of("orderId", "order_1042")
));
makepay.createBookkeepingInvoicePaymentLink("INVOICE_UID", Map.of(
"sendPaymentRequestEmail", true
));
makepay.createBookkeepingExpense(Map.of(
"title", "Hosting",
"amount", "49",
"currency", "USD",
"incurredOn", "2026-05-15"
));
makepay.uploadBookkeepingDocument(
Path.of("receipt.pdf"),
"receipt.pdf",
"receipt",
null,
"EXPENSE_UID"
);
makepay.getBookkeepingSummary();
Branding, Settings, And Operations
makepay.updateBranding(Map.of(
"brandName", "Merchant",
"websiteUrl", "https://merchant.example",
"supportEmail", "support@merchant.example",
"brandingAccentColor", "#14b8a6",
"paymentLinkDomain", "pay.merchant.example",
"emailSendingDomain", "mail.merchant.example"
));
makepay.getBranding();
makepay.refreshBrandingDomains("all");
makepay.getSettings();
makepay.updateSettings(Map.of(
"callbackUrl", "https://merchant.example/webhooks/makepay"
));
makepay.listDestinationAssets();
makepay.listWebhookRequests(Map.of("limit", 25));
Verify Webhooks
Read the exact raw body before parsing JSON.
importio.makecrypto.makepay.MakePayWebhook;
StringrawBody = requestBodyString;
Stringsignature = request.getHeader("x-makepay-signature");
JsonNodeevent = MakePayWebhook.parse(
rawBody,
signature,
System.getenv("MAKEPAY_WEBHOOK_SECRET")
);
if ("status_changed".equals(event.path("event").path("type").asText())) {
// Update your local order.
}
Use MakePayWebhook.verify(...) when you only need a boolean result.
Release
The package is published to Maven Central as io.makecrypto:makepay. The
GitHub workflow Publish MakePay Java SDK builds, signs, creates a Central
Portal deployment bundle, uploads it to Central Portal, and waits for the
deployment to finish.
The canonical monorepo source lives in apps/plugins/java-sdk. The public
repository at https://github.com/makecryptoio/makepay-java-sdk mirrors only
the SDK files so developers can install or inspect it without the full
MakeCrypto workspace.
Required GitHub secrets:
  • CENTRAL_PORTAL_USERNAME
  • CENTRAL_PORTAL_PASSWORD
  • MAVEN_SIGNING_KEY
  • MAVEN_SIGNING_PASSWORD
About
Official MakePay Java SDK. Cryptocurrency payment gateway for direct self-custody merchant-wallet settlement, decentralized swaps, and 70+ coin/20+ chain auto-conversion.
www.makepay.io
Topics
20-chains70-coinscrypto-payment-gatewaycrypto-paymentscryptocurrencydecentralized-swapsdirect-settlementmakepaymerchant-walletmultichainself-custodywallet-settlementweb3
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
MakePay Java SDK
Official Java SDK for MakePay server-side integrations. Use it to create crypto
payment links, donation pages, invoices, bookkeeping records, subscriptions,
POS terminals, products, Simple Shop storefronts, customer portals, branded
domains, and signed webhook handlers.
Public source: https://github.com/makecryptoio/makepay-java-sdk
Install
dependencies {
implementation("io.makecrypto:makepay:0.3.0")
}
<dependency>
<groupId>io.makecrypto</groupId>
<artifactId>makepay</artifactId>
<version>0.3.0</version>
</dependency>
The SDK targets Java 11 or newer and uses the standard JDK HTTP client.
Configure
Create a MakePay API key in MakeCrypto and keep the secret on your server only.
importio.makecrypto.makepay.MakePayClient;
importio.makecrypto.makepay.MakePayClientOptions;
MakePayClientmakepay = newMakePayClient(
MakePayClientOptions.builder()
.keyId(System.getenv("MAKEPAY_KEY_ID"))
.keySecret(System.getenv("MAKEPAY_KEY_SECRET"))
.build()
);
The client sends X-MakeCrypto-Key-Id and X-MakeCrypto-Key-Secret headers to
the MakePay partner API.
Payment Links
importcom.fasterxml.jackson.databind.JsonNode;
importjava.util.Map;
JsonNoderesponse = makepay.createPaymentLink(Map.of(
"title", "Order #1042",
"description", "Checkout for order #1042",
"amount", "129.99",
"currency", "USDT",
"orderId", "order_1042",
"customerEmail", "buyer@example.com",
"returnUrl", "https://merchant.example/orders/1042",
"successUrl", "https://merchant.example/orders/1042/success",
"failureUrl", "https://merchant.example/orders/1042/pay",
"expirationTime", "12h"
));
StringpublicUrl = response.path("paymentLink").path("publicUrl").asText();
Read, update, and email existing links:
makepay.listPaymentLinks();
makepay.getPaymentLink("PAYMENT_LINK_UID");
makepay.updatePaymentLink("PAYMENT_LINK_UID", Map.of("status", "paused"));
makepay.sendPaymentRequestEmail("PAYMENT_LINK_UID", "buyer@example.com");
Donations
Donation pages are flexible-amount payment links with a public donation slug.
JsonNodedonation = makepay.createDonationLink(Map.of(
"title", "Spring campaign",
"description", "Support the 2026 spring fundraiser.",
"defaultAmountUsd", "25",
"minimumAmountUsd", "5",
"donationSlug", "spring-campaign"
));
makepay.listDonationLinks();
makepay.getDonationLink("DONATION_UID");
makepay.updateDonationLink("DONATION_UID", Map.of("status", "paused"));
Anonymous Payment Links
Anonymous links do not use a MakePay API key. They require an explicit
settlement route because MakePay cannot read merchant wallet settings.
importjava.util.List;
JsonNodeanonymous = MakePayClient.createAnonymousPaymentLink(Map.of(
"amount", "25",
"settlement", Map.of(
"currency", "USDT",
"priorities", List.of(Map.of(
"chain", "ETH",
"address", "0xYourSettlementWallet",
"asset", "ETH.USDT-0xdAC17F958D2ee523a2206206994597C13D831ec7"
))
),
"title", "Invoice #1042",
"webhookUrl", "https://merchant.example/webhooks/makepay"
));
Checkout URLs And Embeds
Use hosted checkout for redirects, or the embed helpers when your frontend keeps
the shopper on the merchant site.
StringpaymentUid = response.path("paymentLink").path("uid").asText();
StringhostedUrl = makepay.hostedCheckoutUrl(paymentUid);
StringembedUrl = makepay.embeddedCheckoutUrl(
paymentUid,
"https://merchant.example"
);
StringbuttonHtml = makepay.embedButtonHtml(paymentUid, "Pay with crypto");
StringiframeHtml = makepay.iframeHtml(paymentUid, "Secure MakePay checkout");
StringdonationHostedUrl = makepay.hostedDonationUrl("spring-campaign");
StringdonationEmbedUrl = makepay.embeddedDonationUrl(
"spring-campaign",
"https://merchant.example"
);
Customers And Subscriptions
makepay.upsertCustomer(Map.of(
"email", "buyer@example.com",
"name", "Buyer Example",
"clientId", "crm_123"
));
makepay.createCustomerPortal("CUSTOMER_ID", Map.of(
"returnUrl", "https://merchant.example/account"
));
makepay.createSubscription(Map.of(
"amountUsd", "29",
"customerEmail", "buyer@example.com",
"label", "Monthly plan",
"billingIntervalUnit", "month",
"billingIntervalCount", 1
));
POS, Products, And Simple Shop
JsonNodeterminal = makepay.createPosTerminal(Map.of(
"name", "Front counter",
"pin", "1234",
"catalogEnabled", true
));
makepay.createProduct(Map.of(
"name", "Digital guide",
"productType", "digital",
"basePriceUsd", "19",
"shopSlug", "digital-guide",
"images", List.of(Map.of(
"url", "https://merchant.example/guide.png",
"alt", "Guide cover"
)),
"variants", List.of(Map.of("name", "PDF", "priceUsd", "19"))
));
makepay.createProductDownload("PRODUCT_UID", Map.of(
"fileName", "guide.pdf",
"contentType", "application/pdf",
"url", "https://merchant.example/downloads/guide.pdf"
));
makepay.updateShop(Map.of(
"slug", "merchant-shop",
"displayCurrency", "USD",
"checkoutMode", "hosted"
));
makepay.updateShopDomain("shop.merchant.example");
makepay.refreshShopDomain();
makepay.createShopCoupon(Map.of(
"code", "SPRING10",
"discountType", "percent",
"value", "10"
));
makepay.listShopOrders(Map.of("status", "paid", "limit", 25));
Invoices And Bookkeeping
JsonNodeinvoice = makepay.createBookkeepingInvoice(Map.of(
"title", "Invoice #1042",
"currency", "USD",
"issueDate", "2026-05-15",
"dueDate", "2026-05-30",
"counterparty", Map.of(
"name", "Buyer Example",
"email", "buyer@example.com"
),
"lineItems", List.of(Map.of(
"description", "Implementation services",
"quantity", "1",
"unitAmount", "500"
)),
"metadata", Map.of("orderId", "order_1042")
));
makepay.createBookkeepingInvoicePaymentLink("INVOICE_UID", Map.of(
"sendPaymentRequestEmail", true
));
makepay.createBookkeepingExpense(Map.of(
"title", "Hosting",
"amount", "49",
"currency", "USD",
"incurredOn", "2026-05-15"
));
makepay.uploadBookkeepingDocument(
Path.of("receipt.pdf"),
"receipt.pdf",
"receipt",
null,
"EXPENSE_UID"
);
makepay.getBookkeepingSummary();
Branding, Settings, And Operations
makepay.updateBranding(Map.of(
"brandName", "Merchant",
"websiteUrl", "https://merchant.example",
"supportEmail", "support@merchant.example",
"brandingAccentColor", "#14b8a6",
"paymentLinkDomain", "pay.merchant.example",
"emailSendingDomain", "mail.merchant.example"
));
makepay.getBranding();
makepay.refreshBrandingDomains("all");
makepay.getSettings();
makepay.updateSettings(Map.of(
"callbackUrl", "https://merchant.example/webhooks/makepay"
));
makepay.listDestinationAssets();
makepay.listWebhookRequests(Map.of("limit", 25));
Verify Webhooks
Read the exact raw body before parsing JSON.
importio.makecrypto.makepay.MakePayWebhook;
StringrawBody = requestBodyString;
Stringsignature = request.getHeader("x-makepay-signature");
JsonNodeevent = MakePayWebhook.parse(
rawBody,
signature,
System.getenv("MAKEPAY_WEBHOOK_SECRET")
);
if ("status_changed".equals(event.path("event").path("type").asText())) {
// Update your local order.
}
Use MakePayWebhook.verify(...) when you only need a boolean result.
Release
The package is published to Maven Central as io.makecrypto:makepay. The
GitHub workflow Publish MakePay Java SDK builds, signs, creates a Central
Portal deployment bundle, uploads it to Central Portal, and waits for the
deployment to finish.
The canonical monorepo source lives in apps/plugins/java-sdk. The public
repository at https://github.com/makecryptoio/makepay-java-sdk mirrors only
the SDK files so developers can install or inspect it without the full
MakeCrypto workspace.
Required GitHub secrets:
  • CENTRAL_PORTAL_USERNAME
  • CENTRAL_PORTAL_PASSWORD
  • MAVEN_SIGNING_KEY
  • MAVEN_SIGNING_PASSWORD
About
Official MakePay Java SDK. Cryptocurrency payment gateway for direct self-custody merchant-wallet settlement, decentralized swaps, and 70+ coin/20+ chain auto-conversion.
www.makepay.io
Topics
20-chains70-coinscrypto-payment-gatewaycrypto-paymentscryptocurrencydecentralized-swapsdirect-settlementmakepaymerchant-walletmultichainself-custodywallet-settlementweb3
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
MakePay Java SDK
Official Java SDK for MakePay server-side integrations. Use it to create crypto
payment links, donation pages, invoices, bookkeeping records, subscriptions,
POS terminals, products, Simple Shop storefronts, customer portals, branded
domains, and signed webhook handlers.
Public source: https://github.com/makecryptoio/makepay-java-sdk
Install
dependencies {
implementation("io.makecrypto:makepay:0.3.0")
}
<dependency>
<groupId>io.makecrypto</groupId>
<artifactId>makepay</artifactId>
<version>0.3.0</version>
</dependency>
The SDK targets Java 11 or newer and uses the standard JDK HTTP client.
Configure
Create a MakePay API key in MakeCrypto and keep the secret on your server only.
importio.makecrypto.makepay.MakePayClient;
importio.makecrypto.makepay.MakePayClientOptions;
MakePayClientmakepay = newMakePayClient(
MakePayClientOptions.builder()
.keyId(System.getenv("MAKEPAY_KEY_ID"))
.keySecret(System.getenv("MAKEPAY_KEY_SECRET"))
.build()
);
The client sends X-MakeCrypto-Key-Id and X-MakeCrypto-Key-Secret headers to
the MakePay partner API.
Payment Links
importcom.fasterxml.jackson.databind.JsonNode;
importjava.util.Map;
JsonNoderesponse = makepay.createPaymentLink(Map.of(
"title", "Order #1042",
"description", "Checkout for order #1042",
"amount", "129.99",
"currency", "USDT",
"orderId", "order_1042",
"customerEmail", "buyer@example.com",
"returnUrl", "https://merchant.example/orders/1042",
"successUrl", "https://merchant.example/orders/1042/success",
"failureUrl", "https://merchant.example/orders/1042/pay",
"expirationTime", "12h"
));
StringpublicUrl = response.path("paymentLink").path("publicUrl").asText();
Read, update, and email existing links:
makepay.listPaymentLinks();
makepay.getPaymentLink("PAYMENT_LINK_UID");
makepay.updatePaymentLink("PAYMENT_LINK_UID", Map.of("status", "paused"));
makepay.sendPaymentRequestEmail("PAYMENT_LINK_UID", "buyer@example.com");
Donations
Donation pages are flexible-amount payment links with a public donation slug.
JsonNodedonation = makepay.createDonationLink(Map.of(
"title", "Spring campaign",
"description", "Support the 2026 spring fundraiser.",
"defaultAmountUsd", "25",
"minimumAmountUsd", "5",
"donationSlug", "spring-campaign"
));
makepay.listDonationLinks();
makepay.getDonationLink("DONATION_UID");
makepay.updateDonationLink("DONATION_UID", Map.of("status", "paused"));
Anonymous Payment Links
Anonymous links do not use a MakePay API key. They require an explicit
settlement route because MakePay cannot read merchant wallet settings.
importjava.util.List;
JsonNodeanonymous = MakePayClient.createAnonymousPaymentLink(Map.of(
"amount", "25",
"settlement", Map.of(
"currency", "USDT",
"priorities", List.of(Map.of(
"chain", "ETH",
"address", "0xYourSettlementWallet",
"asset", "ETH.USDT-0xdAC17F958D2ee523a2206206994597C13D831ec7"
))
),
"title", "Invoice #1042",
"webhookUrl", "https://merchant.example/webhooks/makepay"
));
Checkout URLs And Embeds
Use hosted checkout for redirects, or the embed helpers when your frontend keeps
the shopper on the merchant site.
StringpaymentUid = response.path("paymentLink").path("uid").asText();
StringhostedUrl = makepay.hostedCheckoutUrl(paymentUid);
StringembedUrl = makepay.embeddedCheckoutUrl(
paymentUid,
"https://merchant.example"
);
StringbuttonHtml = makepay.embedButtonHtml(paymentUid, "Pay with crypto");
StringiframeHtml = makepay.iframeHtml(paymentUid, "Secure MakePay checkout");
StringdonationHostedUrl = makepay.hostedDonationUrl("spring-campaign");
StringdonationEmbedUrl = makepay.embeddedDonationUrl(
"spring-campaign",
"https://merchant.example"
);
Customers And Subscriptions
makepay.upsertCustomer(Map.of(
"email", "buyer@example.com",
"name", "Buyer Example",
"clientId", "crm_123"
));
makepay.createCustomerPortal("CUSTOMER_ID", Map.of(
"returnUrl", "https://merchant.example/account"
));
makepay.createSubscription(Map.of(
"amountUsd", "29",
"customerEmail", "buyer@example.com",
"label", "Monthly plan",
"billingIntervalUnit", "month",
"billingIntervalCount", 1
));
POS, Products, And Simple Shop
JsonNodeterminal = makepay.createPosTerminal(Map.of(
"name", "Front counter",
"pin", "1234",
"catalogEnabled", true
));
makepay.createProduct(Map.of(
"name", "Digital guide",
"productType", "digital",
"basePriceUsd", "19",
"shopSlug", "digital-guide",
"images", List.of(Map.of(
"url", "https://merchant.example/guide.png",
"alt", "Guide cover"
)),
"variants", List.of(Map.of("name", "PDF", "priceUsd", "19"))
));
makepay.createProductDownload("PRODUCT_UID", Map.of(
"fileName", "guide.pdf",
"contentType", "application/pdf",
"url", "https://merchant.example/downloads/guide.pdf"
));
makepay.updateShop(Map.of(
"slug", "merchant-shop",
"displayCurrency", "USD",
"checkoutMode", "hosted"
));
makepay.updateShopDomain("shop.merchant.example");
makepay.refreshShopDomain();
makepay.createShopCoupon(Map.of(
"code", "SPRING10",
"discountType", "percent",
"value", "10"
));
makepay.listShopOrders(Map.of("status", "paid", "limit", 25));
Invoices And Bookkeeping
JsonNodeinvoice = makepay.createBookkeepingInvoice(Map.of(
"title", "Invoice #1042",
"currency", "USD",
"issueDate", "2026-05-15",
"dueDate", "2026-05-30",
"counterparty", Map.of(
"name", "Buyer Example",
"email", "buyer@example.com"
),
"lineItems", List.of(Map.of(
"description", "Implementation services",
"quantity", "1",
"unitAmount", "500"
)),
"metadata", Map.of("orderId", "order_1042")
));
makepay.createBookkeepingInvoicePaymentLink("INVOICE_UID", Map.of(
"sendPaymentRequestEmail", true
));
makepay.createBookkeepingExpense(Map.of(
"title", "Hosting",
"amount", "49",
"currency", "USD",
"incurredOn", "2026-05-15"
));
makepay.uploadBookkeepingDocument(
Path.of("receipt.pdf"),
"receipt.pdf",
"receipt",
null,
"EXPENSE_UID"
);
makepay.getBookkeepingSummary();
Branding, Settings, And Operations
makepay.updateBranding(Map.of(
"brandName", "Merchant",
"websiteUrl", "https://merchant.example",
"supportEmail", "support@merchant.example",
"brandingAccentColor", "#14b8a6",
"paymentLinkDomain", "pay.merchant.example",
"emailSendingDomain", "mail.merchant.example"
));
makepay.getBranding();
makepay.refreshBrandingDomains("all");
makepay.getSettings();
makepay.updateSettings(Map.of(
"callbackUrl", "https://merchant.example/webhooks/makepay"
));
makepay.listDestinationAssets();
makepay.listWebhookRequests(Map.of("limit", 25));
Verify Webhooks
Read the exact raw body before parsing JSON.
importio.makecrypto.makepay.MakePayWebhook;
StringrawBody = requestBodyString;
Stringsignature = request.getHeader("x-makepay-signature");
JsonNodeevent = MakePayWebhook.parse(
rawBody,
signature,
System.getenv("MAKEPAY_WEBHOOK_SECRET")
);
if ("status_changed".equals(event.path("event").path("type").asText())) {
// Update your local order.
}
Use MakePayWebhook.verify(...) when you only need a boolean result.
Release
The package is published to Maven Central as io.makecrypto:makepay. The
GitHub workflow Publish MakePay Java SDK builds, signs, creates a Central
Portal deployment bundle, uploads it to Central Portal, and waits for the
deployment to finish.
The canonical monorepo source lives in apps/plugins/java-sdk. The public
repository at https://github.com/makecryptoio/makepay-java-sdk mirrors only
the SDK files so developers can install or inspect it without the full
MakeCrypto workspace.
Required GitHub secrets:
  • CENTRAL_PORTAL_USERNAME
  • CENTRAL_PORTAL_PASSWORD
  • MAVEN_SIGNING_KEY
  • MAVEN_SIGNING_PASSWORD
About
Official MakePay Java SDK. Cryptocurrency payment gateway for direct self-custody merchant-wallet settlement, decentralized swaps, and 70+ coin/20+ chain auto-conversion.
www.makepay.io
Topics
20-chains70-coinscrypto-payment-gatewaycrypto-paymentscryptocurrencydecentralized-swapsdirect-settlementmakepaymerchant-walletmultichainself-custodywallet-settlementweb3
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
MakePay Java SDK
Official Java SDK for MakePay server-side integrations. Use it to create crypto
payment links, donation pages, invoices, bookkeeping records, subscriptions,
POS terminals, products, Simple Shop storefronts, customer portals, branded
domains, and signed webhook handlers.
Public source: https://github.com/makecryptoio/makepay-java-sdk
Install
dependencies {
implementation("io.makecrypto:makepay:0.3.0")
}
<dependency>
<groupId>io.makecrypto</groupId>
<artifactId>makepay</artifactId>
<version>0.3.0</version>
</dependency>
The SDK targets Java 11 or newer and uses the standard JDK HTTP client.
Configure
Create a MakePay API key in MakeCrypto and keep the secret on your server only.
importio.makecrypto.makepay.MakePayClient;
importio.makecrypto.makepay.MakePayClientOptions;
MakePayClientmakepay = newMakePayClient(
MakePayClientOptions.builder()
.keyId(System.getenv("MAKEPAY_KEY_ID"))
.keySecret(System.getenv("MAKEPAY_KEY_SECRET"))
.build()
);
The client sends X-MakeCrypto-Key-Id and X-MakeCrypto-Key-Secret headers to
the MakePay partner API.
Payment Links
importcom.fasterxml.jackson.databind.JsonNode;
importjava.util.Map;
JsonNoderesponse = makepay.createPaymentLink(Map.of(
"title", "Order #1042",
"description", "Checkout for order #1042",
"amount", "129.99",
"currency", "USDT",
"orderId", "order_1042",
"customerEmail", "buyer@example.com",
"returnUrl", "https://merchant.example/orders/1042",
"successUrl", "https://merchant.example/orders/1042/success",
"failureUrl", "https://merchant.example/orders/1042/pay",
"expirationTime", "12h"
));
StringpublicUrl = response.path("paymentLink").path("publicUrl").asText();
Read, update, and email existing links:
makepay.listPaymentLinks();
makepay.getPaymentLink("PAYMENT_LINK_UID");
makepay.updatePaymentLink("PAYMENT_LINK_UID", Map.of("status", "paused"));
makepay.sendPaymentRequestEmail("PAYMENT_LINK_UID", "buyer@example.com");
Donations
Donation pages are flexible-amount payment links with a public donation slug.
JsonNodedonation = makepay.createDonationLink(Map.of(
"title", "Spring campaign",
"description", "Support the 2026 spring fundraiser.",
"defaultAmountUsd", "25",
"minimumAmountUsd", "5",
"donationSlug", "spring-campaign"
));
makepay.listDonationLinks();
makepay.getDonationLink("DONATION_UID");
makepay.updateDonationLink("DONATION_UID", Map.of("status", "paused"));
Anonymous Payment Links
Anonymous links do not use a MakePay API key. They require an explicit
settlement route because MakePay cannot read merchant wallet settings.
importjava.util.List;
JsonNodeanonymous = MakePayClient.createAnonymousPaymentLink(Map.of(
"amount", "25",
"settlement", Map.of(
"currency", "USDT",
"priorities", List.of(Map.of(
"chain", "ETH",
"address", "0xYourSettlementWallet",
"asset", "ETH.USDT-0xdAC17F958D2ee523a2206206994597C13D831ec7"
))
),
"title", "Invoice #1042",
"webhookUrl", "https://merchant.example/webhooks/makepay"
));
Checkout URLs And Embeds
Use hosted checkout for redirects, or the embed helpers when your frontend keeps
the shopper on the merchant site.
StringpaymentUid = response.path("paymentLink").path("uid").asText();
StringhostedUrl = makepay.hostedCheckoutUrl(paymentUid);
StringembedUrl = makepay.embeddedCheckoutUrl(
paymentUid,
"https://merchant.example"
);
StringbuttonHtml = makepay.embedButtonHtml(paymentUid, "Pay with crypto");
StringiframeHtml = makepay.iframeHtml(paymentUid, "Secure MakePay checkout");
StringdonationHostedUrl = makepay.hostedDonationUrl("spring-campaign");
StringdonationEmbedUrl = makepay.embeddedDonationUrl(
"spring-campaign",
"https://merchant.example"
);
Customers And Subscriptions
makepay.upsertCustomer(Map.of(
"email", "buyer@example.com",
"name", "Buyer Example",
"clientId", "crm_123"
));
makepay.createCustomerPortal("CUSTOMER_ID", Map.of(
"returnUrl", "https://merchant.example/account"
));
makepay.createSubscription(Map.of(
"amountUsd", "29",
"customerEmail", "buyer@example.com",
"label", "Monthly plan",
"billingIntervalUnit", "month",
"billingIntervalCount", 1
));
POS, Products, And Simple Shop
JsonNodeterminal = makepay.createPosTerminal(Map.of(
"name", "Front counter",
"pin", "1234",
"catalogEnabled", true
));
makepay.createProduct(Map.of(
"name", "Digital guide",
"productType", "digital",
"basePriceUsd", "19",
"shopSlug", "digital-guide",
"images", List.of(Map.of(
"url", "https://merchant.example/guide.png",
"alt", "Guide cover"
)),
"variants", List.of(Map.of("name", "PDF", "priceUsd", "19"))
));
makepay.createProductDownload("PRODUCT_UID", Map.of(
"fileName", "guide.pdf",
"contentType", "application/pdf",
"url", "https://merchant.example/downloads/guide.pdf"
));
makepay.updateShop(Map.of(
"slug", "merchant-shop",
"displayCurrency", "USD",
"checkoutMode", "hosted"
));
makepay.updateShopDomain("shop.merchant.example");
makepay.refreshShopDomain();
makepay.createShopCoupon(Map.of(
"code", "SPRING10",
"discountType", "percent",
"value", "10"
));
makepay.listShopOrders(Map.of("status", "paid", "limit", 25));
Invoices And Bookkeeping
JsonNodeinvoice = makepay.createBookkeepingInvoice(Map.of(
"title", "Invoice #1042",
"currency", "USD",
"issueDate", "2026-05-15",
"dueDate", "2026-05-30",
"counterparty", Map.of(
"name", "Buyer Example",
"email", "buyer@example.com"
),
"lineItems", List.of(Map.of(
"description", "Implementation services",
"quantity", "1",
"unitAmount", "500"
)),
"metadata", Map.of("orderId", "order_1042")
));
makepay.createBookkeepingInvoicePaymentLink("INVOICE_UID", Map.of(
"sendPaymentRequestEmail", true
));
makepay.createBookkeepingExpense(Map.of(
"title", "Hosting",
"amount", "49",
"currency", "USD",
"incurredOn", "2026-05-15"
));
makepay.uploadBookkeepingDocument(
Path.of("receipt.pdf"),
"receipt.pdf",
"receipt",
null,
"EXPENSE_UID"
);
makepay.getBookkeepingSummary();
Branding, Settings, And Operations
makepay.updateBranding(Map.of(
"brandName", "Merchant",
"websiteUrl", "https://merchant.example",
"supportEmail", "support@merchant.example",
"brandingAccentColor", "#14b8a6",
"paymentLinkDomain", "pay.merchant.example",
"emailSendingDomain", "mail.merchant.example"
));
makepay.getBranding();
makepay.refreshBrandingDomains("all");
makepay.getSettings();
makepay.updateSettings(Map.of(
"callbackUrl", "https://merchant.example/webhooks/makepay"
));
makepay.listDestinationAssets();
makepay.listWebhookRequests(Map.of("limit", 25));
Verify Webhooks
Read the exact raw body before parsing JSON.
importio.makecrypto.makepay.MakePayWebhook;
StringrawBody = requestBodyString;
Stringsignature = request.getHeader("x-makepay-signature");
JsonNodeevent = MakePayWebhook.parse(
rawBody,
signature,
System.getenv("MAKEPAY_WEBHOOK_SECRET")
);
if ("status_changed".equals(event.path("event").path("type").asText())) {
// Update your local order.
}
Use MakePayWebhook.verify(...) when you only need a boolean result.
Release
The package is published to Maven Central as io.makecrypto:makepay. The
GitHub workflow Publish MakePay Java SDK builds, signs, creates a Central
Portal deployment bundle, uploads it to Central Portal, and waits for the
deployment to finish.
The canonical monorepo source lives in apps/plugins/java-sdk. The public
repository at https://github.com/makecryptoio/makepay-java-sdk mirrors only
the SDK files so developers can install or inspect it without the full
MakeCrypto workspace.
Required GitHub secrets:
  • CENTRAL_PORTAL_USERNAME
  • CENTRAL_PORTAL_PASSWORD
  • MAVEN_SIGNING_KEY
  • MAVEN_SIGNING_PASSWORD
About
Official MakePay Java SDK. Cryptocurrency payment gateway for direct self-custody merchant-wallet settlement, decentralized swaps, and 70+ coin/20+ chain auto-conversion.
www.makepay.io
Topics
20-chains70-coinscrypto-payment-gatewaycrypto-paymentscryptocurrencydecentralized-swapsdirect-settlementmakepaymerchant-walletmultichainself-custodywallet-settlementweb3
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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MakePay Java SDK
Official Java SDK for MakePay server-side integrations. Use it to create crypto
payment links, donation pages, invoices, bookkeeping records, subscriptions,
POS terminals, products, Simple Shop storefronts, customer portals, branded
domains, and signed webhook handlers.
Public source: https://github.com/makecryptoio/makepay-java-sdk
Install
dependencies {
implementation("io.makecrypto:makepay:0.3.0")
}
<dependency>
<groupId>io.makecrypto</groupId>
<artifactId>makepay</artifactId>
<version>0.3.0</version>
</dependency>
The SDK targets Java 11 or newer and uses the standard JDK HTTP client.
Configure
Create a MakePay API key in MakeCrypto and keep the secret on your server only.
importio.makecrypto.makepay.MakePayClient;
importio.makecrypto.makepay.MakePayClientOptions;
MakePayClientmakepay = newMakePayClient(
MakePayClientOptions.builder()
.keyId(System.getenv("MAKEPAY_KEY_ID"))
.keySecret(System.getenv("MAKEPAY_KEY_SECRET"))
.build()
);
The client sends X-MakeCrypto-Key-Id and X-MakeCrypto-Key-Secret headers to
the MakePay partner API.
Payment Links
importcom.fasterxml.jackson.databind.JsonNode;
importjava.util.Map;
JsonNoderesponse = makepay.createPaymentLink(Map.of(
"title", "Order #1042",
"description", "Checkout for order #1042",
"amount", "129.99",
"currency", "USDT",
"orderId", "order_1042",
"customerEmail", "buyer@example.com",
"returnUrl", "https://merchant.example/orders/1042",
"successUrl", "https://merchant.example/orders/1042/success",
"failureUrl", "https://merchant.example/orders/1042/pay",
"expirationTime", "12h"
));
StringpublicUrl = response.path("paymentLink").path("publicUrl").asText();
Read, update, and email existing links:
makepay.listPaymentLinks();
makepay.getPaymentLink("PAYMENT_LINK_UID");
makepay.updatePaymentLink("PAYMENT_LINK_UID", Map.of("status", "paused"));
makepay.sendPaymentRequestEmail("PAYMENT_LINK_UID", "buyer@example.com");
Donations
Donation pages are flexible-amount payment links with a public donation slug.
JsonNodedonation = makepay.createDonationLink(Map.of(
"title", "Spring campaign",
"description", "Support the 2026 spring fundraiser.",
"defaultAmountUsd", "25",
"minimumAmountUsd", "5",
"donationSlug", "spring-campaign"
));
makepay.listDonationLinks();
makepay.getDonationLink("DONATION_UID");
makepay.updateDonationLink("DONATION_UID", Map.of("status", "paused"));
Anonymous Payment Links
Anonymous links do not use a MakePay API key. They require an explicit
settlement route because MakePay cannot read merchant wallet settings.
importjava.util.List;
JsonNodeanonymous = MakePayClient.createAnonymousPaymentLink(Map.of(
"amount", "25",
"settlement", Map.of(
"currency", "USDT",
"priorities", List.of(Map.of(
"chain", "ETH",
"address", "0xYourSettlementWallet",
"asset", "ETH.USDT-0xdAC17F958D2ee523a2206206994597C13D831ec7"
))
),
"title", "Invoice #1042",
"webhookUrl", "https://merchant.example/webhooks/makepay"
));
Checkout URLs And Embeds
Use hosted checkout for redirects, or the embed helpers when your frontend keeps
the shopper on the merchant site.
StringpaymentUid = response.path("paymentLink").path("uid").asText();
StringhostedUrl = makepay.hostedCheckoutUrl(paymentUid);
StringembedUrl = makepay.embeddedCheckoutUrl(
paymentUid,
"https://merchant.example"
);
StringbuttonHtml = makepay.embedButtonHtml(paymentUid, "Pay with crypto");
StringiframeHtml = makepay.iframeHtml(paymentUid, "Secure MakePay checkout");
StringdonationHostedUrl = makepay.hostedDonationUrl("spring-campaign");
StringdonationEmbedUrl = makepay.embeddedDonationUrl(
"spring-campaign",
"https://merchant.example"
);
Customers And Subscriptions
makepay.upsertCustomer(Map.of(
"email", "buyer@example.com",
"name", "Buyer Example",
"clientId", "crm_123"
));
makepay.createCustomerPortal("CUSTOMER_ID", Map.of(
"returnUrl", "https://merchant.example/account"
));
makepay.createSubscription(Map.of(
"amountUsd", "29",
"customerEmail", "buyer@example.com",
"label", "Monthly plan",
"billingIntervalUnit", "month",
"billingIntervalCount", 1
));
POS, Products, And Simple Shop
JsonNodeterminal = makepay.createPosTerminal(Map.of(
"name", "Front counter",
"pin", "1234",
"catalogEnabled", true
));
makepay.createProduct(Map.of(
"name", "Digital guide",
"productType", "digital",
"basePriceUsd", "19",
"shopSlug", "digital-guide",
"images", List.of(Map.of(
"url", "https://merchant.example/guide.png",
"alt", "Guide cover"
)),
"variants", List.of(Map.of("name", "PDF", "priceUsd", "19"))
));
makepay.createProductDownload("PRODUCT_UID", Map.of(
"fileName", "guide.pdf",
"contentType", "application/pdf",
"url", "https://merchant.example/downloads/guide.pdf"
));
makepay.updateShop(Map.of(
"slug", "merchant-shop",
"displayCurrency", "USD",
"checkoutMode", "hosted"
));
makepay.updateShopDomain("shop.merchant.example");
makepay.refreshShopDomain();
makepay.createShopCoupon(Map.of(
"code", "SPRING10",
"discountType", "percent",
"value", "10"
));
makepay.listShopOrders(Map.of("status", "paid", "limit", 25));
Invoices And Bookkeeping
JsonNodeinvoice = makepay.createBookkeepingInvoice(Map.of(
"title", "Invoice #1042",
"currency", "USD",
"issueDate", "2026-05-15",
"dueDate", "2026-05-30",
"counterparty", Map.of(
"name", "Buyer Example",
"email", "buyer@example.com"
),
"lineItems", List.of(Map.of(
"description", "Implementation services",
"quantity", "1",
"unitAmount", "500"
)),
"metadata", Map.of("orderId", "order_1042")
));
makepay.createBookkeepingInvoicePaymentLink("INVOICE_UID", Map.of(
"sendPaymentRequestEmail", true
));
makepay.createBookkeepingExpense(Map.of(
"title", "Hosting",
"amount", "49",
"currency", "USD",
"incurredOn", "2026-05-15"
));
makepay.uploadBookkeepingDocument(
Path.of("receipt.pdf"),
"receipt.pdf",
"receipt",
null,
"EXPENSE_UID"
);
makepay.getBookkeepingSummary();
Branding, Settings, And Operations
makepay.updateBranding(Map.of(
"brandName", "Merchant",
"websiteUrl", "https://merchant.example",
"supportEmail", "support@merchant.example",
"brandingAccentColor", "#14b8a6",
"paymentLinkDomain", "pay.merchant.example",
"emailSendingDomain", "mail.merchant.example"
));
makepay.getBranding();
makepay.refreshBrandingDomains("all");
makepay.getSettings();
makepay.updateSettings(Map.of(
"callbackUrl", "https://merchant.example/webhooks/makepay"
));
makepay.listDestinationAssets();
makepay.listWebhookRequests(Map.of("limit", 25));
Verify Webhooks
Read the exact raw body before parsing JSON.
importio.makecrypto.makepay.MakePayWebhook;
StringrawBody = requestBodyString;
Stringsignature = request.getHeader("x-makepay-signature");
JsonNodeevent = MakePayWebhook.parse(
rawBody,
signature,
System.getenv("MAKEPAY_WEBHOOK_SECRET")
);
if ("status_changed".equals(event.path("event").path("type").asText())) {
// Update your local order.
}
Use MakePayWebhook.verify(...) when you only need a boolean result.
Release
The package is published to Maven Central as io.makecrypto:makepay. The
GitHub workflow Publish MakePay Java SDK builds, signs, creates a Central
Portal deployment bundle, uploads it to Central Portal, and waits for the
deployment to finish.
The canonical monorepo source lives in apps/plugins/java-sdk. The public
repository at https://github.com/makecryptoio/makepay-java-sdk mirrors only
the SDK files so developers can install or inspect it without the full
MakeCrypto workspace.
Required GitHub secrets:
  • CENTRAL_PORTAL_USERNAME
  • CENTRAL_PORTAL_PASSWORD
  • MAVEN_SIGNING_KEY
  • MAVEN_SIGNING_PASSWORD
About
Official MakePay Java SDK. Cryptocurrency payment gateway for direct self-custody merchant-wallet settlement, decentralized swaps, and 70+ coin/20+ chain auto-conversion.
www.makepay.io
Topics
20-chains70-coinscrypto-payment-gatewaycrypto-paymentscryptocurrencydecentralized-swapsdirect-settlementmakepaymerchant-walletmultichainself-custodywallet-settlementweb3
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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MakePay Java SDK
Official Java SDK for MakePay server-side integrations. Use it to create crypto
payment links, donation pages, invoices, bookkeeping records, subscriptions,
POS terminals, products, Simple Shop storefronts, customer portals, branded
domains, and signed webhook handlers.
Public source: https://github.com/makecryptoio/makepay-java-sdk
Install
dependencies {
implementation("io.makecrypto:makepay:0.3.0")
}
<dependency>
<groupId>io.makecrypto</groupId>
<artifactId>makepay</artifactId>
<version>0.3.0</version>
</dependency>
The SDK targets Java 11 or newer and uses the standard JDK HTTP client.
Configure
Create a MakePay API key in MakeCrypto and keep the secret on your server only.
importio.makecrypto.makepay.MakePayClient;
importio.makecrypto.makepay.MakePayClientOptions;
MakePayClientmakepay = newMakePayClient(
MakePayClientOptions.builder()
.keyId(System.getenv("MAKEPAY_KEY_ID"))
.keySecret(System.getenv("MAKEPAY_KEY_SECRET"))
.build()
);
The client sends X-MakeCrypto-Key-Id and X-MakeCrypto-Key-Secret headers to
the MakePay partner API.
Payment Links
importcom.fasterxml.jackson.databind.JsonNode;
importjava.util.Map;
JsonNoderesponse = makepay.createPaymentLink(Map.of(
"title", "Order #1042",
"description", "Checkout for order #1042",
"amount", "129.99",
"currency", "USDT",
"orderId", "order_1042",
"customerEmail", "buyer@example.com",
"returnUrl", "https://merchant.example/orders/1042",
"successUrl", "https://merchant.example/orders/1042/success",
"failureUrl", "https://merchant.example/orders/1042/pay",
"expirationTime", "12h"
));
StringpublicUrl = response.path("paymentLink").path("publicUrl").asText();
Read, update, and email existing links:
makepay.listPaymentLinks();
makepay.getPaymentLink("PAYMENT_LINK_UID");
makepay.updatePaymentLink("PAYMENT_LINK_UID", Map.of("status", "paused"));
makepay.sendPaymentRequestEmail("PAYMENT_LINK_UID", "buyer@example.com");
Donations
Donation pages are flexible-amount payment links with a public donation slug.
JsonNodedonation = makepay.createDonationLink(Map.of(
"title", "Spring campaign",
"description", "Support the 2026 spring fundraiser.",
"defaultAmountUsd", "25",
"minimumAmountUsd", "5",
"donationSlug", "spring-campaign"
));
makepay.listDonationLinks();
makepay.getDonationLink("DONATION_UID");
makepay.updateDonationLink("DONATION_UID", Map.of("status", "paused"));
Anonymous Payment Links
Anonymous links do not use a MakePay API key. They require an explicit
settlement route because MakePay cannot read merchant wallet settings.
importjava.util.List;
JsonNodeanonymous = MakePayClient.createAnonymousPaymentLink(Map.of(
"amount", "25",
"settlement", Map.of(
"currency", "USDT",
"priorities", List.of(Map.of(
"chain", "ETH",
"address", "0xYourSettlementWallet",
"asset", "ETH.USDT-0xdAC17F958D2ee523a2206206994597C13D831ec7"
))
),
"title", "Invoice #1042",
"webhookUrl", "https://merchant.example/webhooks/makepay"
));
Checkout URLs And Embeds
Use hosted checkout for redirects, or the embed helpers when your frontend keeps
the shopper on the merchant site.
StringpaymentUid = response.path("paymentLink").path("uid").asText();
StringhostedUrl = makepay.hostedCheckoutUrl(paymentUid);
StringembedUrl = makepay.embeddedCheckoutUrl(
paymentUid,
"https://merchant.example"
);
StringbuttonHtml = makepay.embedButtonHtml(paymentUid, "Pay with crypto");
StringiframeHtml = makepay.iframeHtml(paymentUid, "Secure MakePay checkout");
StringdonationHostedUrl = makepay.hostedDonationUrl("spring-campaign");
StringdonationEmbedUrl = makepay.embeddedDonationUrl(
"spring-campaign",
"https://merchant.example"
);
Customers And Subscriptions
makepay.upsertCustomer(Map.of(
"email", "buyer@example.com",
"name", "Buyer Example",
"clientId", "crm_123"
));
makepay.createCustomerPortal("CUSTOMER_ID", Map.of(
"returnUrl", "https://merchant.example/account"
));
makepay.createSubscription(Map.of(
"amountUsd", "29",
"customerEmail", "buyer@example.com",
"label", "Monthly plan",
"billingIntervalUnit", "month",
"billingIntervalCount", 1
));
POS, Products, And Simple Shop
JsonNodeterminal = makepay.createPosTerminal(Map.of(
"name", "Front counter",
"pin", "1234",
"catalogEnabled", true
));
makepay.createProduct(Map.of(
"name", "Digital guide",
"productType", "digital",
"basePriceUsd", "19",
"shopSlug", "digital-guide",
"images", List.of(Map.of(
"url", "https://merchant.example/guide.png",
"alt", "Guide cover"
)),
"variants", List.of(Map.of("name", "PDF", "priceUsd", "19"))
));
makepay.createProductDownload("PRODUCT_UID", Map.of(
"fileName", "guide.pdf",
"contentType", "application/pdf",
"url", "https://merchant.example/downloads/guide.pdf"
));
makepay.updateShop(Map.of(
"slug", "merchant-shop",
"displayCurrency", "USD",
"checkoutMode", "hosted"
));
makepay.updateShopDomain("shop.merchant.example");
makepay.refreshShopDomain();
makepay.createShopCoupon(Map.of(
"code", "SPRING10",
"discountType", "percent",
"value", "10"
));
makepay.listShopOrders(Map.of("status", "paid", "limit", 25));
Invoices And Bookkeeping
JsonNodeinvoice = makepay.createBookkeepingInvoice(Map.of(
"title", "Invoice #1042",
"currency", "USD",
"issueDate", "2026-05-15",
"dueDate", "2026-05-30",
"counterparty", Map.of(
"name", "Buyer Example",
"email", "buyer@example.com"
),
"lineItems", List.of(Map.of(
"description", "Implementation services",
"quantity", "1",
"unitAmount", "500"
)),
"metadata", Map.of("orderId", "order_1042")
));
makepay.createBookkeepingInvoicePaymentLink("INVOICE_UID", Map.of(
"sendPaymentRequestEmail", true
));
makepay.createBookkeepingExpense(Map.of(
"title", "Hosting",
"amount", "49",
"currency", "USD",
"incurredOn", "2026-05-15"
));
makepay.uploadBookkeepingDocument(
Path.of("receipt.pdf"),
"receipt.pdf",
"receipt",
null,
"EXPENSE_UID"
);
makepay.getBookkeepingSummary();
Branding, Settings, And Operations
makepay.updateBranding(Map.of(
"brandName", "Merchant",
"websiteUrl", "https://merchant.example",
"supportEmail", "support@merchant.example",
"brandingAccentColor", "#14b8a6",
"paymentLinkDomain", "pay.merchant.example",
"emailSendingDomain", "mail.merchant.example"
));
makepay.getBranding();
makepay.refreshBrandingDomains("all");
makepay.getSettings();
makepay.updateSettings(Map.of(
"callbackUrl", "https://merchant.example/webhooks/makepay"
));
makepay.listDestinationAssets();
makepay.listWebhookRequests(Map.of("limit", 25));
Verify Webhooks
Read the exact raw body before parsing JSON.
importio.makecrypto.makepay.MakePayWebhook;
StringrawBody = requestBodyString;
Stringsignature = request.getHeader("x-makepay-signature");
JsonNodeevent = MakePayWebhook.parse(
rawBody,
signature,
System.getenv("MAKEPAY_WEBHOOK_SECRET")
);
if ("status_changed".equals(event.path("event").path("type").asText())) {
// Update your local order.
}
Use MakePayWebhook.verify(...) when you only need a boolean result.
Release
The package is published to Maven Central as io.makecrypto:makepay. The
GitHub workflow Publish MakePay Java SDK builds, signs, creates a Central
Portal deployment bundle, uploads it to Central Portal, and waits for the
deployment to finish.
The canonical monorepo source lives in apps/plugins/java-sdk. The public
repository at https://github.com/makecryptoio/makepay-java-sdk mirrors only
the SDK files so developers can install or inspect it without the full
MakeCrypto workspace.
Required GitHub secrets:
  • CENTRAL_PORTAL_USERNAME
  • CENTRAL_PORTAL_PASSWORD
  • MAVEN_SIGNING_KEY
  • MAVEN_SIGNING_PASSWORD
About
Official MakePay Java SDK. Cryptocurrency payment gateway for direct self-custody merchant-wallet settlement, decentralized swaps, and 70+ coin/20+ chain auto-conversion.
www.makepay.io
Topics
20-chains70-coinscrypto-payment-gatewaycrypto-paymentscryptocurrencydecentralized-swapsdirect-settlementmakepaymerchant-walletmultichainself-custodywallet-settlementweb3
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
MakePay Java SDK
Official Java SDK for MakePay server-side integrations. Use it to create crypto
payment links, donation pages, invoices, bookkeeping records, subscriptions,
POS terminals, products, Simple Shop storefronts, customer portals, branded
domains, and signed webhook handlers.
Public source: https://github.com/makecryptoio/makepay-java-sdk
Install
dependencies {
implementation("io.makecrypto:makepay:0.3.0")
}
<dependency>
<groupId>io.makecrypto</groupId>
<artifactId>makepay</artifactId>
<version>0.3.0</version>
</dependency>
The SDK targets Java 11 or newer and uses the standard JDK HTTP client.
Configure
Create a MakePay API key in MakeCrypto and keep the secret on your server only.
importio.makecrypto.makepay.MakePayClient;
importio.makecrypto.makepay.MakePayClientOptions;
MakePayClientmakepay = newMakePayClient(
MakePayClientOptions.builder()
.keyId(System.getenv("MAKEPAY_KEY_ID"))
.keySecret(System.getenv("MAKEPAY_KEY_SECRET"))
.build()
);
The client sends X-MakeCrypto-Key-Id and X-MakeCrypto-Key-Secret headers to
the MakePay partner API.
Payment Links
importcom.fasterxml.jackson.databind.JsonNode;
importjava.util.Map;
JsonNoderesponse = makepay.createPaymentLink(Map.of(
"title", "Order #1042",
"description", "Checkout for order #1042",
"amount", "129.99",
"currency", "USDT",
"orderId", "order_1042",
"customerEmail", "buyer@example.com",
"returnUrl", "https://merchant.example/orders/1042",
"successUrl", "https://merchant.example/orders/1042/success",
"failureUrl", "https://merchant.example/orders/1042/pay",
"expirationTime", "12h"
));
StringpublicUrl = response.path("paymentLink").path("publicUrl").asText();
Read, update, and email existing links:
makepay.listPaymentLinks();
makepay.getPaymentLink("PAYMENT_LINK_UID");
makepay.updatePaymentLink("PAYMENT_LINK_UID", Map.of("status", "paused"));
makepay.sendPaymentRequestEmail("PAYMENT_LINK_UID", "buyer@example.com");
Donations
Donation pages are flexible-amount payment links with a public donation slug.
JsonNodedonation = makepay.createDonationLink(Map.of(
"title", "Spring campaign",
"description", "Support the 2026 spring fundraiser.",
"defaultAmountUsd", "25",
"minimumAmountUsd", "5",
"donationSlug", "spring-campaign"
));
makepay.listDonationLinks();
makepay.getDonationLink("DONATION_UID");
makepay.updateDonationLink("DONATION_UID", Map.of("status", "paused"));
Anonymous Payment Links
Anonymous links do not use a MakePay API key. They require an explicit
settlement route because MakePay cannot read merchant wallet settings.
importjava.util.List;
JsonNodeanonymous = MakePayClient.createAnonymousPaymentLink(Map.of(
"amount", "25",
"settlement", Map.of(
"currency", "USDT",
"priorities", List.of(Map.of(
"chain", "ETH",
"address", "0xYourSettlementWallet",
"asset", "ETH.USDT-0xdAC17F958D2ee523a2206206994597C13D831ec7"
))
),
"title", "Invoice #1042",
"webhookUrl", "https://merchant.example/webhooks/makepay"
));
Checkout URLs And Embeds
Use hosted checkout for redirects, or the embed helpers when your frontend keeps
the shopper on the merchant site.
StringpaymentUid = response.path("paymentLink").path("uid").asText();
StringhostedUrl = makepay.hostedCheckoutUrl(paymentUid);
StringembedUrl = makepay.embeddedCheckoutUrl(
paymentUid,
"https://merchant.example"
);
StringbuttonHtml = makepay.embedButtonHtml(paymentUid, "Pay with crypto");
StringiframeHtml = makepay.iframeHtml(paymentUid, "Secure MakePay checkout");
StringdonationHostedUrl = makepay.hostedDonationUrl("spring-campaign");
StringdonationEmbedUrl = makepay.embeddedDonationUrl(
"spring-campaign",
"https://merchant.example"
);
Customers And Subscriptions
makepay.upsertCustomer(Map.of(
"email", "buyer@example.com",
"name", "Buyer Example",
"clientId", "crm_123"
));
makepay.createCustomerPortal("CUSTOMER_ID", Map.of(
"returnUrl", "https://merchant.example/account"
));
makepay.createSubscription(Map.of(
"amountUsd", "29",
"customerEmail", "buyer@example.com",
"label", "Monthly plan",
"billingIntervalUnit", "month",
"billingIntervalCount", 1
));
POS, Products, And Simple Shop
JsonNodeterminal = makepay.createPosTerminal(Map.of(
"name", "Front counter",
"pin", "1234",
"catalogEnabled", true
));
makepay.createProduct(Map.of(
"name", "Digital guide",
"productType", "digital",
"basePriceUsd", "19",
"shopSlug", "digital-guide",
"images", List.of(Map.of(
"url", "https://merchant.example/guide.png",
"alt", "Guide cover"
)),
"variants", List.of(Map.of("name", "PDF", "priceUsd", "19"))
));
makepay.createProductDownload("PRODUCT_UID", Map.of(
"fileName", "guide.pdf",
"contentType", "application/pdf",
"url", "https://merchant.example/downloads/guide.pdf"
));
makepay.updateShop(Map.of(
"slug", "merchant-shop",
"displayCurrency", "USD",
"checkoutMode", "hosted"
));
makepay.updateShopDomain("shop.merchant.example");
makepay.refreshShopDomain();
makepay.createShopCoupon(Map.of(
"code", "SPRING10",
"discountType", "percent",
"value", "10"
));
makepay.listShopOrders(Map.of("status", "paid", "limit", 25));
Invoices And Bookkeeping
JsonNodeinvoice = makepay.createBookkeepingInvoice(Map.of(
"title", "Invoice #1042",
"currency", "USD",
"issueDate", "2026-05-15",
"dueDate", "2026-05-30",
"counterparty", Map.of(
"name", "Buyer Example",
"email", "buyer@example.com"
),
"lineItems", List.of(Map.of(
"description", "Implementation services",
"quantity", "1",
"unitAmount", "500"
)),
"metadata", Map.of("orderId", "order_1042")
));
makepay.createBookkeepingInvoicePaymentLink("INVOICE_UID", Map.of(
"sendPaymentRequestEmail", true
));
makepay.createBookkeepingExpense(Map.of(
"title", "Hosting",
"amount", "49",
"currency", "USD",
"incurredOn", "2026-05-15"
));
makepay.uploadBookkeepingDocument(
Path.of("receipt.pdf"),
"receipt.pdf",
"receipt",
null,
"EXPENSE_UID"
);
makepay.getBookkeepingSummary();
Branding, Settings, And Operations
makepay.updateBranding(Map.of(
"brandName", "Merchant",
"websiteUrl", "https://merchant.example",
"supportEmail", "support@merchant.example",
"brandingAccentColor", "#14b8a6",
"paymentLinkDomain", "pay.merchant.example",
"emailSendingDomain", "mail.merchant.example"
));
makepay.getBranding();
makepay.refreshBrandingDomains("all");
makepay.getSettings();
makepay.updateSettings(Map.of(
"callbackUrl", "https://merchant.example/webhooks/makepay"
));
makepay.listDestinationAssets();
makepay.listWebhookRequests(Map.of("limit", 25));
Verify Webhooks
Read the exact raw body before parsing JSON.
importio.makecrypto.makepay.MakePayWebhook;
StringrawBody = requestBodyString;
Stringsignature = request.getHeader("x-makepay-signature");
JsonNodeevent = MakePayWebhook.parse(
rawBody,
signature,
System.getenv("MAKEPAY_WEBHOOK_SECRET")
);
if ("status_changed".equals(event.path("event").path("type").asText())) {
// Update your local order.
}
Use MakePayWebhook.verify(...) when you only need a boolean result.
Release
The package is published to Maven Central as io.makecrypto:makepay. The
GitHub workflow Publish MakePay Java SDK builds, signs, creates a Central
Portal deployment bundle, uploads it to Central Portal, and waits for the
deployment to finish.
The canonical monorepo source lives in apps/plugins/java-sdk. The public
repository at https://github.com/makecryptoio/makepay-java-sdk mirrors only
the SDK files so developers can install or inspect it without the full
MakeCrypto workspace.
Required GitHub secrets:
  • CENTRAL_PORTAL_USERNAME
  • CENTRAL_PORTAL_PASSWORD
  • MAVEN_SIGNING_KEY
  • MAVEN_SIGNING_PASSWORD
About
Official MakePay Java SDK. Cryptocurrency payment gateway for direct self-custody merchant-wallet settlement, decentralized swaps, and 70+ coin/20+ chain auto-conversion.
www.makepay.io
Topics
20-chains70-coinscrypto-payment-gatewaycrypto-paymentscryptocurrencydecentralized-swapsdirect-settlementmakepaymerchant-walletmultichainself-custodywallet-settlementweb3
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