SDKs & Libraries

Official FlexOps SDKs are available in 7 languages. Each SDK provides:

• Typed request/response models
• Automatic retry with exponential backoff
• Rate limit handling
• Webhook signature verification
• Idempotency key generation
• Carrier-specific passthrough methods (USPS, FedEx, UPS, DHL)

Supported Languages

Language	Package	Min Version
Node.js	@flexops/sdk	Node 18+
Python	flexops	Python 3.10+
C#	FlexOps.Sdk	.NET 10+
Ruby	flexops	Ruby 3.1+
PHP	flexops/sdk	PHP 8.1+
Go	github.com/FlexOps/flexops-sdk-go	Go 1.22+
Java	com.flexops:flexops-sdk	Java 21+

Installation

Node.js

npm install @flexops/sdk

Python

pip install flexops

C#

dotnet add package FlexOps.Sdk

Ruby

gem install flexops

PHP

composer require flexops/sdk

Go

go get github.com/FlexOps/flexops-sdk-go

Java

<dependency>
  <groupId>com.flexops</groupId>
  <artifactId>flexops-sdk</artifactId>
  <version>1.0.0</version>
</dependency>

Client Initialization

Node.js

import { FlexOps } from '@flexops/sdk';

const client = new FlexOps({
  apiKey: 'fxk_live_your_api_key',
  workspaceId: 'ws_abc123',
});

Python

from flexops import FlexOps

client = FlexOps(
    api_key="fxk_live_your_api_key",
    workspace_id="ws_abc123",
)

C#

using FlexOps.Sdk;

using var client = new FlexOpsClient(
    baseUrl: "https://api.flexops.io",
    apiKey: "fxk_live_your_api_key");
client.WorkspaceId = "ws_abc123";

Ruby

require 'flexops'

client = FlexOps::Client.new(
  api_key: 'fxk_live_your_api_key',
  workspace_id: 'ws_abc123',
)

PHP

use FlexOps\FlexOps;

$client = new FlexOps([
    'apiKey' => 'fxk_live_your_api_key',
    'workspaceId' => 'ws_abc123',
]);

Go

import "github.com/FlexOps/flexops-sdk-go"

client := flexops.NewClient(flexops.Config{
    APIKey:      "fxk_live_your_api_key",
    WorkspaceID: "ws_abc123",
})

Java

import com.flexops.sdk.FlexOpsClient;

var client = new FlexOpsClient(
    "https://api.flexops.io",
    "fxk_live_your_api_key");
client.setWorkspaceId("ws_abc123");

Feature Parity

All SDKs support the same core operations:

Feature	All SDKs
Rate shopping	Yes
Label creation	Yes
Tracking	Yes
Address validation	Yes
Webhook verification	Yes
Batch operations	Yes
Async/await	Yes
Automatic retries	Yes
Rate limit handling	Yes
Carrier passthrough (USPS, FedEx, UPS, DHL)	Yes

Available Resources

Every SDK exposes these resource domains on the client object:

Resource	Methods
shipping	getRates, getCheapestRate, getFastestRate, createLabel, cancelLabel, track, validateAddress, createBatch, getBatchStatus
carriers	usps., fedex., ups., dhl. (carrier-specific passthrough)
webhooks	create, list, delete, test
wallet	getBalance, reload, getTransactions
insurance	getQuote, buyPolicy, listPolicies
returns	create, authorize, track
analytics	getShipmentsTrend, getCarrierSummary
auth	login, register, refreshToken, logout
apiKeys	create, list, revoke, rotate

See individual SDK pages for language-specific examples.