How It Works

Three simple steps to integrate Speed Logistic Services shipping into your platform.

Get Your API Key

Go to API Keys

Make Your First Request

Use the code examples below to calculate rates or create your first order with a simple cURL command.

See Examples

Go Live

Swap the sandbox URL with the production endpoint. Your orders will start flowing automatically.

View Endpoints

Why Use Our API?

Built for developers, designed for speed.

Connect Your Store in Minutes

One API key. Plug into Shopify, WooCommerce, or any custom platform without complex configuration.

All Couriers, One Integration

Delhivery, Blue Dart, Xpressbees, Ekart and more — managed through a single unified API.

Secure by Design

API keys, HMAC webhook signatures, and TLS encryption keep your data and shipments safe.

Always Production Ready

Sandbox environment for testing and a live production endpoint — switch with a single key.

Authentication

Secure Your Requests

Every API call needs your unique API key. Add it to the request header and you are good to go. You can get your key from the dashboard.

Two Ways to Authenticate

RecommendedCustom Header

x-api-key: sls_live_sk_your_key

Standard Bearer TokenAuthorization: Bearer sls_live_sk_your_key

Authentication Example

# Add this header to every API request:
curl https://api.speedlogistic.com/api/v1/orders \
  -H "x-api-key: sls_live_sk_your_api_key"

# Or use standard Bearer token:
curl https://api.speedlogistic.com/api/v1/orders \
  -H "Authorization: Bearer sls_live_sk_your_api_key"

API Reference

Explore the Endpoints

Select any endpoint below to see the exact request format and a real response. Copy and use directly in your app.

Rate CalculatorPOST

Get live shipping quotes from all courier partners in one call

/api/v1/rates/calculate

curl -X POST https://api.speedlogistic.com/api/v1/rates/calculate \
  -H "x-api-key: sls_live_sk_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "pickupPincode": "400001",
    "deliveryPincode": "560001",
    "weightKg": 0.5,
    "lengthCm": 10,
    "breadthCm": 10,
    "heightCm": 10,
    "paymentMode": "PREPAID",
    "invoiceValue": 999
  }'

Rate Limits

Our API is designed for high-volume production workloads.

60 req / min

Standard Limit

Per API key

200 req / min

Burst Allowance

Short-term spikes allowed

Custom limits

Enterprise SLA

Ready to Start Shipping?

Create your account, grab your API key, and make your first shipment booking in under 5 minutes. No contracts. No setup fees.

Build Shipping Into Your Product