ApiClient — server-side CoinVoyage REST API client

ApiClient is the server-side interface to the CoinVoyage API. Import it from @coin-voyage/paykit/server and use it in your API routes, server actions, or backend services to create pay orders, retrieve quotes, manage webhooks, and more. Every method returns an APIResponse<T> wrapper that provides consistent, type-safe error handling without throwing exceptions.

Initialization

import { ApiClient } from "@coin-voyage/paykit/server";

const apiClient = new ApiClient({
  apiKey: process.env.COIN_VOYAGE_API_KEY!,
  environment: "production",
  sessionId: "optional-session-id",
  version: "1.0.0",
});

apiKey

string

required

Your organization’s API key from the CoinVoyage dashboard.

environment

string

default:"production"

Environment to connect to: "production" or "development".

sessionId

string

Optional session identifier attached to every request for tracking purposes.

version

string

Optional client version string sent as the X-Client-Version request header.

APIResponse<T>

Every ApiClient method returns a Promise<APIResponse<T>>. The response is always an object with either a data field (on success) or an error field (on failure) — never both.

interface APIResponse<T> {
  data?: T
  error?: {
    path: string
    statusCode: number
    status: string
    message: string
  }
}

Handling responses

const { data, error } = await apiClient.someMethod();

if (error) {
  console.error("Operation failed:", error.message);
  return;
}

// TypeScript narrows `data` to T here
console.log("Success:", data);

data

The typed response payload. Present when the request succeeds.

error

object

Error details. Present when the request fails.

Show error fields

error.path

string

The API path that returned the error.

error.statusCode

number

HTTP status code of the error response.

error.status

string

Short status label (e.g., "Bad Request").

error.message

string

Human-readable description of what went wrong.

Methods

createDepositPayOrder

Creates a pay order with mode DEPOSIT for a direct on-chain deposit to a specified address.

import { ApiClient, ChainId } from "@coin-voyage/paykit/server";

const { data, error } = await apiClient.createDepositPayOrder({
  intent: {
    asset: {
      chain_id: ChainId.SUI,
      address: null, // null = native token (SUI)
    },
    amount: {
      token_amount: 10, // 10 SUI
    },
    receiving_address: "0xYourReceivingAddressHere",
  },
  metadata: {
    items: [{ name: "Deposit to SUI wallet" }],
  },
});

Provide either token_amount or fiat in intent.amount, never both. The amount must be greater than zero. Invalid input is caught by built-in Zod validation and returns an error without making a network request.

Parameters: params (PayOrderParams), opts? (Opts) Returns: Promise<APIResponse<PayOrder>>

createSalePayOrder

Creates a pay order with mode SALE for a merchant sale. Requires your API secret for authorization. If you omit intent.asset, CoinVoyage settles the payment to the settlement currency configured in your dashboard. If you provide intent.asset, the pay order settles to that specific asset and chain.

The authorization signature is generated internally. You only need to pass the raw apiSecret string.

Dashboard settlement currency
Specific settlement asset

const apiSecret = process.env.COIN_VOYAGE_API_SECRET!;

const { data, error } = await apiClient.createSalePayOrder(
  {
    intent: {
      amount: {
        fiat: {
          amount: 200,
          unit: "USD",
        },
      },
    },
    metadata: {
      items: [
        {
          name: "t-shirt",
          description: "A nice t-shirt",
          image: "https://example.com/tshirt.jpg",
          quantity: 1,
          unit_price: 200,
          currency: "USD",
        },
      ],
    },
  },
  apiSecret
);

const apiSecret = process.env.COIN_VOYAGE_API_SECRET!;

const { data, error } = await apiClient.createSalePayOrder(
  {
    intent: {
      amount: {
        fiat: {
          amount: 570.52,
          unit: "USD",
        },
      },
      asset: {
        chain_id: 30000000000001,
        address: "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      },
    },
  },
  apiSecret
);

`intent.asset`	Settlement behavior
Omitted	Settles to your dashboard settlement currency (must be configured)
Provided	Settles to the specified asset and chain for this pay order

Parameters: params (PayOrderParams), apiSecret (string), opts? (Opts) Returns: Promise<APIResponse<PayOrder>>

createRefundPayOrder

Creates a pay order with mode REFUND against an existing pay order. Supports full and partial refunds.

const apiSecret = process.env.COIN_VOYAGE_API_SECRET!;

const { data: refundPayOrder, error } = await apiClient.createRefundPayOrder(
  "original-payorder-id",
  {
    intent: {
      asset: {
        chain_id: 1,
        address: null,
      },
      receiving_address: "0x5678...efgh",
      amount: {
        fiat: {
          amount: 100,
          unit: "USD",
        },
      },
    },
    metadata: {
      items: [
        {
          name: "refund",
          description: "Refund for t-shirt purchase",
          unit_price: 100,
          currency: "USD",
        },
      ],
    },
  },
  apiSecret
);

Parameters: payOrderId (string), params (PayOrderParams), apiSecret (string), opts? (Opts) Returns: Promise<APIResponse<PayOrder>>

getPayOrder

Fetches a pay order by its ID.

const { data: payOrder, error } = await apiClient.getPayOrder(
  "pay-order-id-123"
);

Parameters: payOrderId (string), opts? (Opts) Returns: Promise<APIResponse<PayOrder>>

payOrderQuote

Generates a quote for a pay order given a user’s wallet and chain information. Returns available payment tokens with balances.

const { data: quote, error } = await apiClient.payOrderQuote("pay-order-id", {
  wallet_address: "0x1234...abcd",
  chain_type: ChainType.EVM,
  chain_id: 1, // Ethereum mainnet
});

Parameters: payOrderId (string), params (PayOrderQuoteParams), opts? (Opts) Returns: Promise<APIResponse<RouteQuote[]>>

payOrderPaymentDetails

Retrieves the information needed to complete a payment — destination address, amount, and per-step payment instructions.

const { data: paymentDetails, error } = await apiClient.payOrderPaymentDetails({
  payorder_id: "12345",
  source_currency: {
    chain_id: ChainId.ETH,
    address: "0x1234567890abcdef1234567890abcdef12345678",
  },
  refund_address: "0xabcdefabcdefabcdefabcdefabcdefabcdefabcd",
});

Parameters:

params.payorder_id

string

required

The unique identifier of the pay order.

params.payment_rail

string

default:"CRYPTO"

Payment rail to use. Defaults to CRYPTO.

params.source_currency

object

Source currency to use for the payment details request, with chain_id and address.

params.quote_id

string

Quote identifier from a previously selected route quote.

params.refund_address

string

Address to which funds are returned if the payment fails.

Returns: Promise<APIResponse<PaymentDetails>>

getPayOrderPaymentMethods

Fetches the available payment methods (rails, tokens, availability) for a pay order.

const { data: paymentMethods, error } =
  await apiClient.getPayOrderPaymentMethods("pay-order-id-123");

Parameters: payOrderId (string), opts? (Opts) Returns: Promise<APIResponse<PaymentMethodsResponse>>

generateAuthorizationSignature

Generates an HMAC-SHA256 authorization signature required for SALE and REFUND pay order creation.

const apiSecret = process.env.COIN_VOYAGE_API_SECRET!;
const signature = apiClient.generateAuthorizationSignature(
  apiSecret,
  "POST",
  "/pay-orders"
);

The result is formatted as:

APIKey=<apiKey>,signature=<signature>,timestamp=<timestamp>

This method uses your API secret. Call it only in server-side code. Never expose your API secret in client-side bundles.

Parameters: apiSecret (string), method (string), path (string) Returns: string

subscribeOrderStatus

Opens a WebSocket connection for real-time pay order status events. The client authenticates automatically using your API key.

const socket = apiClient.subscribeOrderStatus();

socket.onOpen(() => {
  socket.subscribe(orderId);
});

socket.onMessage((msg) => {
  if (msg.type === "event") {
    console.log(msg.data);
  }
});

Returns: OrderStatusSocket The OrderStatusSocket exposes the following methods:

Subscribe to status events for a specific pay order.

Subscribe to all pay order events for your organization.

unsubscribe(orderId?)

function

Unsubscribe from a specific pay order, or from all subscriptions if orderId is omitted.

unsubscribeOrg()

function

Unsubscribe from organization-wide events.

onMessage(callback)

function

Attach a listener for parsed server messages.

onOpen(callback)

function

Attach a listener for the WebSocket open event.

onClose(callback)

function

Attach a listener for the WebSocket close event.

onError(callback)

function

Attach a listener for WebSocket errors.

close()

function

Close the WebSocket connection.

Webhook methods

listWebhooks

Lists all webhooks configured for your organization.

const { data: webhooks, error } = await apiClient.listWebhooks(apiSecret);

Parameters: apiSecret (string), opts? (Opts)Returns: Promise<APIResponse<WebhookResponse[]>>

createWebhook

Creates a new webhook subscription for your organization.

const { data: webhook, error } = await apiClient.createWebhook(
  params,
  apiSecret
);

Parameters: params (CreateWebhookRequest), apiSecret (string), opts? (Opts)Returns: Promise<APIResponse<WebhookResponse>>

updateWebhook

Updates an existing webhook subscription.

const { data: webhook, error } = await apiClient.updateWebhook(
  "webhook-id",
  params,
  apiSecret
);

Parameters: webhookId (string), params (UpdateWebhookRequest), apiSecret (string), opts? (Opts)Returns: Promise<APIResponse<WebhookResponse>>

deleteWebhook

Deletes a webhook subscription.

const { error } = await apiClient.deleteWebhook("webhook-id", apiSecret);

Parameters: webhookId (string), apiSecret (string), opts? (Opts)Returns: Promise<APIResponse<void>>

Fee methods

getFeeBalances

Retrieves claimable fee balances for your organization.

const { data: balances, error } = await apiClient.getFeeBalances(apiSecret);

Parameters: apiSecret (string), opts? (Opts)Returns: Promise<APIResponse<GetFeeBalancesResponse>>

claimFees

Claims accrued fees for your organization.

const { data: claimResult, error } = await apiClient.claimFees(
  claimFeesParams,
  apiSecret
);

Parameters: params (ClaimFeesRequest), apiSecret (string), opts? (Opts)Returns: Promise<APIResponse<ClaimFeesResponse>>

Swap methods

swapQuote

Gets a quote for swapping between two currencies.

const { data: quote, error } = await apiClient.swapQuote(params);

Parameters: params (SwapQuoteRequest), opts? (Opts)Returns: Promise<APIResponse<SwapQuoteResponse>>

swapData

Gets the transaction data needed to execute a swap.

const { data: swapTx, error } = await apiClient.swapData(params);

Parameters: params (SwapDataRequest), opts? (Opts)Returns: Promise<APIResponse<SwapDataResponse>>

createPayOrder (low-level)

A lower-level helper that creates a pay order with an explicit mode. In most integrations you should use the mode-specific helpers above (createDepositPayOrder, createSalePayOrder, createRefundPayOrder). Use createPayOrder only when you need direct control over the mode and authorization signature.

const signature = apiClient.generateAuthorizationSignature(
  apiSecret,
  "POST",
  "/pay-orders"
);

const { data, error } = await apiClient.createPayOrder(
  params,
  PayOrderMode.SALE,
  signature
);

Parameters: params (PayOrderParams), mode (PayOrderMode), signature? (string), opts? (Opts) Returns: Promise<APIResponse<PayOrder>>

ApiClient does not expose a processPayOrder() method — pay order processing begins automatically once funds are detected on-chain. There is also no listPayOrders() helper; use the GET /pay-orders HTTP endpoint directly if you need it.

TypeScript types

The SDK exports the following TypeScript types for use in your application.

PayOrder

The main pay order object returned by API methods.

type PayOrder = {
  id: string
  mode: PayOrderMode
  status: PayOrderStatus
  metadata?: PayOrderMetadata
  settings?: PayOrderSettings
  fulfillment: FulfillmentData
  payment?: PaymentData
}

PayOrderMode

enum PayOrderMode {
  SALE = "SALE",
  DEPOSIT = "DEPOSIT",
  REFUND = "REFUND",
}

Value	Description
`SALE`	Merchant sale. Settles to the dashboard settlement currency unless `intent.asset` is provided.
`DEPOSIT`	Direct deposit to a specified address on a target chain.
`REFUND`	Full or partial refund of a previous pay order.

PayOrderStatus

enum PayOrderStatus {
  PENDING = "PENDING",
  FAILED = "FAILED",
  AWAITING_PAYMENT = "AWAITING_PAYMENT",
  AWAITING_CONFIRMATION = "AWAITING_CONFIRMATION",
  OPTIMISTIC_CONFIRMED = "OPTIMISTIC_CONFIRMED",
  EXECUTING_ORDER = "EXECUTING_ORDER",
  COMPLETED = "COMPLETED",
  EXPIRED = "EXPIRED",
  REFUNDED = "REFUNDED",
  PARTIAL_PAYMENT = "PARTIAL_PAYMENT",
}

Status	Description
`PENDING`	Created but not yet ready for payment.
`AWAITING_PAYMENT`	Ready and waiting for the user to send payment.
`AWAITING_CONFIRMATION`	Payment transaction detected; waiting for blockchain confirmation.
`OPTIMISTIC_CONFIRMED`	Optimistically confirmed; execution can begin.
`EXECUTING_ORDER`	Payment is being routed to the destination.
`COMPLETED`	Completed successfully.
`FAILED`	Failed during processing.
`EXPIRED`	Expired before payment was received.
`REFUNDED`	Refunded to the configured refund address.
`PARTIAL_PAYMENT`	Received an insufficient amount; reached a terminal partial-payment state.

PayOrderMetadata

type PayOrderMetadata = {
  items?: Array<{
    name: string
    description?: string
    image?: string
    quantity?: number
    unit_price?: number
    currency?: string
  }>
  refund?: {
    name?: string
    reason?: string
    additional_info?: string
    refund_amount?: number
    currency?: string
  }
  // Up to 20 custom string fields
  [key: string]: any
}

You can attach up to 20 additional custom fields to the metadata object. Each custom field value must be a string with a maximum of 500 characters.

PayOrderParams

type PayOrderParams = {
  intent: PayOrderIntent
  metadata?: PayOrderMetadata
}

PayOrderIntent

type PayOrderIntent = {
  asset?: CurrencyBase
  amount: IntentAmount
  receiving_address?: string
}

IntentAmount

Provide either token_amount or fiat — not both.

type IntentAmount = {
  token_amount?: number
  fiat?: {
    amount: number
    unit: FiatCurrency
  }
}

FulfillmentData

type FulfillmentData = {
  asset?: Currency
  fiat?: FiatCurrency
  amount: CurrencyAmount
  rate_usd?: number
  receiving_address?: string
  custom_fee_bps?: number
}

PaymentData

type PaymentData = {
  src: QuoteWithCurrency
  dst: CurrencyWithAmount

  // Legacy fields — prefer steps
  deposit_address: string
  receiving_address: string
  refund_address: string

  source_tx_hash?: string
  destination_tx_hash?: string
  refund_tx_hash?: string
  fee_tx_hash?: string

  steps: PaymentStep[]

  expires_at: Date
}

deposit_address, receiving_address, and refund_address are legacy compatibility fields. Use the steps array for rail-specific payment instructions and provider data instead.

CurrencyAmount

interface CurrencyAmount {
  ui_amount: number
  ui_amount_display: string
  raw_amount: string
  value_usd: number
}

ui_amount

number

Human-readable amount (e.g., 1.5 for 1.5 ETH).

ui_amount_display

string

Formatted display string suitable for rendering in UI.

raw_amount

string

Raw amount as a string to prevent BigInt precision loss.

value_usd

number

USD equivalent value of the amount.

WebhookEventType

enum WebhookEventType {
  ORDER_CREATED = "ORDER_CREATED",
  ORDER_AWAITING_PAYMENT = "ORDER_AWAITING_PAYMENT",
  ORDER_CONFIRMING = "ORDER_CONFIRMING",
  ORDER_EXECUTING = "ORDER_EXECUTING",
  ORDER_COMPLETED = "ORDER_COMPLETED",
  ORDER_ERROR = "ORDER_ERROR",
  ORDER_REFUNDED = "ORDER_REFUNDED",
  ORDER_EXPIRED = "ORDER_EXPIRED",
}

Event	Payload `type`	Description
`ORDER_CREATED`	`payorder_created`	A new pay order was created.
`ORDER_AWAITING_PAYMENT`	`payorder_started`	The pay order is ready for payment.
`ORDER_CONFIRMING`	`payorder_confirming`	Payment detected and confirming on-chain.
`ORDER_EXECUTING`	`payorder_executing`	Payment execution has begun.
`ORDER_COMPLETED`	`payorder_completed`	The pay order completed successfully.
`ORDER_ERROR`	`payorder_error`	An error occurred during processing.
`ORDER_REFUNDED`	`payorder_refunded`	A refund was processed.
`ORDER_EXPIRED`	`payorder_expired`	The pay order expired before payment was received.

Get Started

Core Concepts

SDK

Webhooks

Dashboard

Resources

ApiClient — server-side CoinVoyage REST API client

Initialization

APIResponse<T>

Handling responses

Methods

createDepositPayOrder

createSalePayOrder

createRefundPayOrder

getPayOrder

payOrderQuote

payOrderPaymentDetails

getPayOrderPaymentMethods

generateAuthorizationSignature

subscribeOrderStatus

Webhook methods

Fee methods

Swap methods

createPayOrder (low-level)

TypeScript types

PayOrder

PayOrderMode

PayOrderStatus

PayOrderMetadata

PayOrderParams

PayOrderIntent

IntentAmount

FulfillmentData

PaymentData

CurrencyAmount

WebhookEventType

Get Started

Core Concepts

SDK

Webhooks

Dashboard

Resources

Documentation Index

​Initialization

​APIResponse<T>

​Handling responses

​Methods

​createDepositPayOrder

​createSalePayOrder

​createRefundPayOrder

​getPayOrder

​payOrderQuote

​payOrderPaymentDetails

​getPayOrderPaymentMethods

​generateAuthorizationSignature

​subscribeOrderStatus

​Webhook methods

​Fee methods

​Swap methods

​createPayOrder (low-level)

​TypeScript types

​PayOrder

​PayOrderMode

​PayOrderStatus

​PayOrderMetadata

​PayOrderParams

​PayOrderIntent

​IntentAmount

​FulfillmentData

​PaymentData

​CurrencyAmount

​WebhookEventType

Initialization

APIResponse<T>

Handling responses

Methods

createDepositPayOrder

createSalePayOrder

createRefundPayOrder

getPayOrder

payOrderQuote

payOrderPaymentDetails

getPayOrderPaymentMethods

generateAuthorizationSignature

subscribeOrderStatus

Webhook methods

Fee methods

Swap methods

createPayOrder (low-level)

TypeScript types

PayOrder

PayOrderMode

PayOrderStatus

PayOrderMetadata

PayOrderParams

PayOrderIntent

IntentAmount

FulfillmentData

PaymentData

CurrencyAmount

WebhookEventType