Developer-friendly & type-safe Typescript SDK specifically catered to leverage the Gr4vy API.
Gr4vy Typescript SDK
The official Gr4vy SDK for Typescript provides a convenient way to interact with the Gr4vy API from your server-side application. This SDK allows you to seamlessly integrate Gr4vy's powerful payment orchestration capabilities, including:
- Creating Transactions: Initiate and process payments with various payment methods and services.
- Managing Buyers: Store and manage buyer information securely.
- Storing Payment Methods: Securely store and tokenize payment methods for future use.
- Handling Webhooks: Easily process and respond to webhook events from Gr4vy.
- And much more: Access the full suite of Gr4vy API payment features.
This SDK is designed to simplify development, reduce boilerplate code, and help you get up and running with Gr4vy quickly and efficiently. It handles authentication, request signing, and provides easy-to-use methods for most API endpoints.
- Gr4vy Typescript SDK (Beta)
- SDK Installation
- Requirements
- SDK Example Usage
- Bearer token generation
- Embed token generation
- Merchant account ID selection
- Webhooks verification
- Available Resources and Operations
- Error Handling
- Server Selection
- Custom HTTP Client
- Authentication
- SDK Installation
- SDK Example Usage
- Pagination
- Retries
- Standalone functions
- Debugging
- Development
yarn add @gr4vy/sdk
yarn add @gr4vy/sdk
For supported JavaScript runtimes, please consult RUNTIMES.md.
import fs from "fs";
import { Gr4vy, withToken } from "@gr4vy/sdk";
async function run() {
const gr4vy = new Gr4vy({
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
const result = await gr4vy.transactions.list({});
// Handle the result
console.log(result);
}
run();
Alternatively, you can create a token for use with the SDK or with your own client library.
import { getToken } from "@gr4vy/sdk";
async function run() {
const token = await getToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
});
console.log(token);
}
run();
Note: This will only create a token once. Use
withToken
to dynamically generate a token for every request.
Alternatively, you can create a token for use with Embed as follows.
import { Gr4vy, getEmbedToken } from "@gr4vy/sdk";
async function run() {
const privateKey = fs.readFileSync("private_key.pem", "utf8")
const gr4vy = new Gr4vy({
server: "sandbox",
id: "example",
bearerAuth: withToken({ privateKey }),
});
const checkoutSession = await gr4vy.checkoutSessions.create()
const token = await getEmbedToken({
privateKey,
checkoutSessionId: checkoutSession.id,
embedParams: {
amount: 1299,
currency: 'USD',
buyerExternalIdentifier: 'user-1234',
}
});
console.log(token);
}
run();
Note: This will only create a token once. Use
withToken
to dynamically generate a token for every request.
Depending on the key used, you might need to explicitly define a merchant account ID to use. In our API,
this uses the X-GR4VY-MERCHANT-ACCOUNT-ID
header. When using the SDK, you can set the merchantAccountId
on every request.
const result = await gr4vy.transactions.list({
merchantAccountId: 'merchant-12345'
})
Alternatively, the merchant account ID can also be set when initializing the SDK.
const gr4vy = new Gr4vy({
server: "sandbox",
id: "example",
merchantAccountId: 'merchant-12345',
bearerAuth: withToken({ privateKey }),
});
The SDK provides a verifyWebhook
method to validate incoming webhook requests from Gr4vy. This ensures that the webhook payload is authentic and has not been tampered with.
import { verifyWebhook } from "@gr4vy/sdk";
const payload = 'your-webhook-payload'
const secret = 'your-webhook-secret'
const signatureHeader = 'signatures-from-header'
const timestampHeader = 'timestamp-from-header'
const timestampTolerance = 300 // optional, in seconds (default: 0)
try {
verifyWebhook(
payload,
secret,
signatureHeader,
timestampHeader,
timestampTolerance
)
console.log('Webhook verified successfully!')
} catch (error) {
console.error('Webhook verification failed:', error.message)
}
payload
: The raw payload string received in the webhook request.secret
: The secret used to sign the webhook. This is provided in your Gr4vy dashboard.signatureHeader
: TheX-Gr4vy-Signature
header from the webhook request.timestampHeader
: TheX-Gr4vy-Timestamp
header from the webhook request.timestampTolerance
: (Optional) The maximum allowed difference (in seconds) between the current time and the timestamp in the webhook. Defaults to0
(no tolerance).
Available methods
- create - Create account updater job
- list - List audit log entries
- list - List all buyers
- create - Add a buyer
- get - Get a buyer
- update - Update a buyer
- delete - Delete a buyer
- list - List gift cards for a buyer
- list - List payment methods for a buyer
- create - Add buyer shipping details
- list - List a buyer's shipping details
- get - Get buyer shipping details
- update - Update a buyer's shipping details
- delete - Delete a buyer's shipping details
- list - List card scheme definitions
- create - Create checkout session
- update - Update checkout session
- get - Get checkout session
- delete - Delete checkout session
- create - Register digital wallet
- list - List digital wallets
- get - Get digital wallet
- delete - Delete digital wallet
- update - Update digital wallet
- googlePay - Create a Google Pay session
- applePay - Create a Apple Pay session
- clickToPay - Create a Click to Pay session
- list - List gift card balances
- list - List all merchant accounts
- create - Create a merchant account
- get - Get a merchant account
- update - Update a merchant account
- list - List all payment methods
- create - Create payment method
- get - Get payment method
- delete - Delete payment method
- list - List network tokens
- create - Provision network token
- suspend - Suspend network token
- resume - Resume network token
- delete - Delete network token
- create - Provision network token cryptogram
- list - List payment service tokens
- create - Create payment service token
- delete - Delete payment service token
- list - List payment options
- list - List payment service definitions
- get - Get a payment service definition
- session - Create a session for apayment service definition
- list - List payment services
- create - Update a configured payment service
- get - Get payment service
- update - Configure a payment service
- delete - Delete a configured payment service
- verify - Verify payment service credentials
- session - Create a session for apayment service definition
- get - Get refund
- list - List transactions
- create - Create transaction
- get - Get transaction
- capture - Capture transaction
- void - Void transaction
- summary - Get transaction summary
- sync - Sync transaction
- create - Create batch transaction refund
Some methods specify known errors which can be thrown. All the known errors are enumerated in the models/errors/errors.ts
module. The known errors for a method are documented under the Errors tables in SDK docs. For example, the create
method may throw the following errors:
Error Type | Status Code | Content Type |
---|---|---|
errors.Error400 | 400 | application/json |
errors.Error401 | 401 | application/json |
errors.Error403 | 403 | application/json |
errors.Error404 | 404 | application/json |
errors.Error405 | 405 | application/json |
errors.Error409 | 409 | application/json |
errors.HTTPValidationError | 422 | application/json |
errors.Error425 | 425 | application/json |
errors.Error429 | 429 | application/json |
errors.Error500 | 500 | application/json |
errors.Error502 | 502 | application/json |
errors.Error504 | 504 | application/json |
errors.SDKError | 4XX, 5XX | */* |
If the method throws an error and it is not captured by the known errors, it will default to throwing a SDKError
.
import { Gr4vy } from "@gr4vy/sdk";
import {
Error400,
Error401,
Error403,
Error404,
Error405,
Error409,
Error425,
Error429,
Error500,
Error502,
Error504,
HTTPValidationError,
SDKValidationError,
} from "@gr4vy/sdk/models/errors";
const gr4vy = new Gr4vy({
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
async function run() {
let result;
try {
result = await gr4vy.accountUpdater.jobs.create({
paymentMethodIds: [
"ef9496d8-53a5-4aad-8ca2-00eb68334389",
"f29e886e-93cc-4714-b4a3-12b7a718e595",
],
});
// Handle the result
console.log(result);
} catch (err) {
switch (true) {
// The server response does not match the expected SDK schema
case (err instanceof SDKValidationError): {
// Pretty-print will provide a human-readable multi-line error message
console.error(err.pretty());
// Raw value may also be inspected
console.error(err.rawValue);
return;
}
case (err instanceof Error400): {
// Handle err.data$: Error400Data
console.error(err);
return;
}
case (err instanceof Error401): {
// Handle err.data$: Error401Data
console.error(err);
return;
}
case (err instanceof Error403): {
// Handle err.data$: Error403Data
console.error(err);
return;
}
case (err instanceof Error404): {
// Handle err.data$: Error404Data
console.error(err);
return;
}
case (err instanceof Error405): {
// Handle err.data$: Error405Data
console.error(err);
return;
}
case (err instanceof Error409): {
// Handle err.data$: Error409Data
console.error(err);
return;
}
case (err instanceof HTTPValidationError): {
// Handle err.data$: HTTPValidationErrorData
console.error(err);
return;
}
case (err instanceof Error425): {
// Handle err.data$: Error425Data
console.error(err);
return;
}
case (err instanceof Error429): {
// Handle err.data$: Error429Data
console.error(err);
return;
}
case (err instanceof Error500): {
// Handle err.data$: Error500Data
console.error(err);
return;
}
case (err instanceof Error502): {
// Handle err.data$: Error502Data
console.error(err);
return;
}
case (err instanceof Error504): {
// Handle err.data$: Error504Data
console.error(err);
return;
}
default: {
// Other errors such as network errors, see HTTPClientErrors for more details
throw err;
}
}
}
}
run();
Validation errors can also occur when either method arguments or data returned from the server do not match the expected format. The SDKValidationError
that is thrown as a result will capture the raw value that failed validation in an attribute called rawValue
. Additionally, a pretty()
method is available on this error that can be used to log a nicely formatted multi-line string since validation errors can list many issues and the plain error string may be difficult read when debugging.
In some rare cases, the SDK can fail to get a response from the server or even make the request due to unexpected circumstances such as network conditions. These types of errors are captured in the models/errors/httpclienterrors.ts
module:
HTTP Client Error | Description |
---|---|
RequestAbortedError | HTTP request was aborted by the client |
RequestTimeoutError | HTTP request timed out due to an AbortSignal signal |
ConnectionError | HTTP client was unable to make a request to a server |
InvalidRequestError | Any input used to create a request is invalid |
UnexpectedClientError | Unrecognised or unexpected error |
You can override the default server globally by passing a server name to the server: keyof typeof ServerList
optional parameter when initializing the SDK client instance. The selected server will then be used as the default on the operations that use it. This table lists the names associated with the available servers:
Name | Server | Variables | Description |
---|---|---|---|
production |
https://api.{id}.gr4vy.app |
id |
|
sandbox |
https://api.sandbox.{id}.gr4vy.app |
id |
If the selected server has variables, you may override its default values through the additional parameters made available in the SDK constructor:
Variable | Parameter | Default | Description |
---|---|---|---|
id |
id: string |
"example" |
The subdomain for your Gr4vy instance. |
import { Gr4vy } from "@gr4vy/sdk";
const gr4vy = new Gr4vy({
server: "sandbox",
id: "<id>",
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
async function run() {
const result = await gr4vy.accountUpdater.jobs.create({
paymentMethodIds: [
"ef9496d8-53a5-4aad-8ca2-00eb68334389",
"f29e886e-93cc-4714-b4a3-12b7a718e595",
],
});
// Handle the result
console.log(result);
}
run();
The default server can also be overridden globally by passing a URL to the serverURL: string
optional parameter when initializing the SDK client instance. For example:
import { Gr4vy } from "@gr4vy/sdk";
const gr4vy = new Gr4vy({
serverURL: "https://api.example.gr4vy.app",
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
async function run() {
const result = await gr4vy.accountUpdater.jobs.create({
paymentMethodIds: [
"ef9496d8-53a5-4aad-8ca2-00eb68334389",
"f29e886e-93cc-4714-b4a3-12b7a718e595",
],
});
// Handle the result
console.log(result);
}
run();
The TypeScript SDK makes API calls using an HTTPClient
that wraps the native
Fetch API. This
client is a thin wrapper around fetch
and provides the ability to attach hooks
around the request lifecycle that can be used to modify the request or handle
errors and response.
The HTTPClient
constructor takes an optional fetcher
argument that can be
used to integrate a third-party HTTP client or when writing tests to mock out
the HTTP client and feed in fixtures.
The following example shows how to use the "beforeRequest"
hook to to add a
custom header and a timeout to requests and how to use the "requestError"
hook
to log errors:
import { Gr4vy } from "@gr4vy/sdk";
import { HTTPClient } from "@gr4vy/sdk/lib/http";
const httpClient = new HTTPClient({
// fetcher takes a function that has the same signature as native `fetch`.
fetcher: (request) => {
return fetch(request);
}
});
httpClient.addHook("beforeRequest", (request) => {
const nextRequest = new Request(request, {
signal: request.signal || AbortSignal.timeout(5000)
});
nextRequest.headers.set("x-custom-header", "custom value");
return nextRequest;
});
httpClient.addHook("requestError", (error, request) => {
console.group("Request Error");
console.log("Reason:", `${error}`);
console.log("Endpoint:", `${request.method} ${request.url}`);
console.groupEnd();
});
const sdk = new Gr4vy({ httpClient });
This SDK supports the following security scheme globally:
Name | Type | Scheme | Environment Variable |
---|---|---|---|
bearerAuth |
http | HTTP Bearer | GR4VY_BEARER_AUTH |
To authenticate with the API the bearerAuth
parameter must be set when initializing the SDK client instance. For example:
import { Gr4vy } from "@gr4vy/sdk";
const gr4vy = new Gr4vy({
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
async function run() {
const result = await gr4vy.accountUpdater.jobs.create({
paymentMethodIds: [
"ef9496d8-53a5-4aad-8ca2-00eb68334389",
"f29e886e-93cc-4714-b4a3-12b7a718e595",
],
});
// Handle the result
console.log(result);
}
run();
The SDK can be installed with either npm, pnpm, bun or yarn package managers.
npm add @gr4vy/sdk
pnpm add @gr4vy/sdk
bun add @gr4vy/sdk
yarn add @gr4vy/sdk zod
# Note that Yarn does not install peer dependencies automatically. You will need
# to install zod as shown above.
This SDK is also an installable MCP server where the various SDK methods are exposed as tools that can be invoked by AI applications.
Node.js v20 or greater is required to run the MCP server from npm.
Claude installation steps
Add the following server definition to your claude_desktop_config.json
file:
{
"mcpServers": {
"Gr4vy": {
"command": "npx",
"args": [
"-y", "--package", "@gr4vy/sdk",
"--",
"mcp", "start",
"--bearer-auth", "...",
"--merchant-account-id", "..."
]
}
}
}
Cursor installation steps
Create a .cursor/mcp.json
file in your project root with the following content:
{
"mcpServers": {
"Gr4vy": {
"command": "npx",
"args": [
"-y", "--package", "@gr4vy/sdk",
"--",
"mcp", "start",
"--bearer-auth", "...",
"--merchant-account-id", "..."
]
}
}
}
You can also run MCP servers as a standalone binary with no additional dependencies. You must pull these binaries from available Github releases:
curl -L -o mcp-server \
https://github.com/{org}/{repo}/releases/download/{tag}/mcp-server-bun-darwin-arm64 && \
chmod +x mcp-server
If the repo is a private repo you must add your Github PAT to download a release -H "Authorization: Bearer {GITHUB_PAT}"
.
{
"mcpServers": {
"Todos": {
"command": "./DOWNLOAD/PATH/mcp-server",
"args": [
"start"
]
}
}
}
For a full list of server arguments, run:
npx -y --package @gr4vy/sdk -- mcp start --help
import { Gr4vy } from "@gr4vy/sdk";
const gr4vy = new Gr4vy({
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
async function run() {
const result = await gr4vy.accountUpdater.jobs.create({
paymentMethodIds: [
"ef9496d8-53a5-4aad-8ca2-00eb68334389",
"f29e886e-93cc-4714-b4a3-12b7a718e595",
],
});
// Handle the result
console.log(result);
}
run();
Some of the endpoints in this SDK support pagination. To use pagination, you
make your SDK calls as usual, but the returned response object will also be an
async iterable that can be consumed using the for await...of
syntax.
Here's an example of one such pagination call:
import { Gr4vy } from "@gr4vy/sdk";
const gr4vy = new Gr4vy({
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
async function run() {
const result = await gr4vy.buyers.list({
cursor: "ZXhhbXBsZTE",
search: "John",
externalIdentifier: "buyer-12345",
});
for await (const page of result) {
// Handle the page
console.log(page);
}
}
run();
Some of the endpoints in this SDK support retries. If you use the SDK without any configuration, it will fall back to the default retry strategy provided by the API. However, the default retry strategy can be overridden on a per-operation basis, or across the entire SDK.
To change the default retry strategy for a single API call, simply provide a retryConfig object to the call:
import { Gr4vy } from "@gr4vy/sdk";
const gr4vy = new Gr4vy({
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
async function run() {
const result = await gr4vy.accountUpdater.jobs.create({
paymentMethodIds: [
"ef9496d8-53a5-4aad-8ca2-00eb68334389",
"f29e886e-93cc-4714-b4a3-12b7a718e595",
],
}, {
retries: {
strategy: "backoff",
backoff: {
initialInterval: 1,
maxInterval: 50,
exponent: 1.1,
maxElapsedTime: 100,
},
retryConnectionErrors: false,
},
});
// Handle the result
console.log(result);
}
run();
If you'd like to override the default retry strategy for all operations that support retries, you can provide a retryConfig at SDK initialization:
import { Gr4vy } from "@gr4vy/sdk";
const gr4vy = new Gr4vy({
retryConfig: {
strategy: "backoff",
backoff: {
initialInterval: 1,
maxInterval: 50,
exponent: 1.1,
maxElapsedTime: 100,
},
retryConnectionErrors: false,
},
server: "sandbox",
id: "example",
bearerAuth: withToken({
privateKey: fs.readFileSync("private_key.pem", "utf8"),
}),
});
async function run() {
const result = await gr4vy.accountUpdater.jobs.create({
paymentMethodIds: [
"ef9496d8-53a5-4aad-8ca2-00eb68334389",
"f29e886e-93cc-4714-b4a3-12b7a718e595",
],
});
// Handle the result
console.log(result);
}
run();
Gr4vy: The Gr4vy API.
- Gr4vy Typescript SDK (Beta)
- SDK Installation
- Requirements
- SDK Example Usage
- Bearer token generation
- Embed token generation
- Merchant account ID selection
- Webhooks verification
- Available Resources and Operations
- Error Handling
- Server Selection
- Custom HTTP Client
- Authentication
- SDK Installation
- SDK Example Usage
- Pagination
- Retries
- Standalone functions
- Debugging
- Development
All the methods listed above are available as standalone functions. These functions are ideal for use in applications running in the browser, serverless runtimes or other environments where application bundle size is a primary concern. When using a bundler to build your application, all unused functionality will be either excluded from the final bundle or tree-shaken away.
To read more about standalone functions, check FUNCTIONS.md.
Available standalone functions
accountUpdaterJobsCreate
- Create account updater jobauditLogsList
- List audit log entriesbuyersCreate
- Add a buyerbuyersDelete
- Delete a buyerbuyersGet
- Get a buyerbuyersGiftCardsList
- List gift cards for a buyerbuyersList
- List all buyersbuyersPaymentMethodsList
- List payment methods for a buyerbuyersShippingDetailsCreate
- Add buyer shipping detailsbuyersShippingDetailsDelete
- Delete a buyer's shipping detailsbuyersShippingDetailsGet
- Get buyer shipping detailsbuyersShippingDetailsList
- List a buyer's shipping detailsbuyersShippingDetailsUpdate
- Update a buyer's shipping detailsbuyersUpdate
- Update a buyercardSchemeDefinitionsList
- List card scheme definitionscheckoutSessionsCreate
- Create checkout sessioncheckoutSessionsDelete
- Delete checkout sessioncheckoutSessionsGet
- Get checkout sessioncheckoutSessionsUpdate
- Update checkout sessiondigitalWalletsCreate
- Register digital walletdigitalWalletsDelete
- Delete digital walletdigitalWalletsDomainsCreate
- Register a digital wallet domaindigitalWalletsDomainsDelete
- Remove a digital wallet domaindigitalWalletsGet
- Get digital walletdigitalWalletsList
- List digital walletsdigitalWalletsSessionsApplePay
- Create a Apple Pay sessiondigitalWalletsSessionsClickToPay
- Create a Click to Pay sessiondigitalWalletsSessionsGooglePay
- Create a Google Pay sessiondigitalWalletsUpdate
- Update digital walletgiftCardsBalancesList
- List gift card balancesgiftCardsCreate
- Create gift cardgiftCardsDelete
- Delete a gift cardgiftCardsGet
- Get gift cardgiftCardsList
- List gift cardsmerchantAccountsCreate
- Create a merchant accountmerchantAccountsGet
- Get a merchant accountmerchantAccountsList
- List all merchant accountsmerchantAccountsUpdate
- Update a merchant accountpaymentMethodsCreate
- Create payment methodpaymentMethodsDelete
- Delete payment methodpaymentMethodsGet
- Get payment methodpaymentMethodsList
- List all payment methodspaymentMethodsNetworkTokensCreate
- Provision network tokenpaymentMethodsNetworkTokensCryptogramCreate
- Provision network token cryptogrampaymentMethodsNetworkTokensDelete
- Delete network tokenpaymentMethodsNetworkTokensList
- List network tokenspaymentMethodsNetworkTokensResume
- Resume network tokenpaymentMethodsNetworkTokensSuspend
- Suspend network tokenpaymentMethodsPaymentServiceTokensCreate
- Create payment service tokenpaymentMethodsPaymentServiceTokensDelete
- Delete payment service tokenpaymentMethodsPaymentServiceTokensList
- List payment service tokenspaymentOptionsList
- List payment optionspaymentServiceDefinitionsGet
- Get a payment service definitionpaymentServiceDefinitionsList
- List payment service definitionspaymentServiceDefinitionsSession
- Create a session for apayment service definitionpaymentServicesCreate
- Update a configured payment servicepaymentServicesDelete
- Delete a configured payment servicepaymentServicesGet
- Get payment servicepaymentServicesList
- List payment servicespaymentServicesSession
- Create a session for apayment service definitionpaymentServicesUpdate
- Configure a payment servicepaymentServicesVerify
- Verify payment service credentialspayoutsCreate
- Create a payout.payoutsGet
- Get a payout.payoutsList
- List payouts created.refundsGet
- Get refundtransactionsCapture
- Capture transactiontransactionsCreate
- Create transactiontransactionsGet
- Get transactiontransactionsList
- List transactionstransactionsRefundsAllCreate
- Create batch transaction refundtransactionsRefundsCreate
- Create transaction refundtransactionsRefundsGet
- Get transaction refundtransactionsRefundsList
- List transaction refundstransactionsSummary
- Get transaction summarytransactionsSync
- Sync transactiontransactionsVoid
- Void transaction
You can setup your SDK to emit debug logs for SDK requests and responses.
You can pass a logger that matches console
's interface as an SDK option.
Warning
Beware that debug logging will reveal secrets, like API tokens in headers, in log messages printed to a console or files. It's recommended to use this feature only during local development and not in production.
import { Gr4vy } from "@gr4vy/sdk";
const sdk = new Gr4vy({ debugLogger: console });
You can also enable a default debug logger by setting an environment variable GR4VY_DEBUG
to true.
To run the tests, install NPM, ensure to download the private_key.pem
for the test environment, and run the following.
npm install
npx vitest
This SDK is in beta, and there may be breaking changes between versions without a major version update. Therefore, we recommend pinning usage to a specific package version. This way, you can install the same version each time without breaking changes unless you are intentionally looking for the latest version.
While we value open-source contributions to this SDK, this library is generated programmatically. Feel free to open a PR or a Github issue as a proof of concept and we'll do our best to include it in a future release!