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This guide will walk you through making your first request to the nexroute API.

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Prerequisites

Before you begin, you need to obtain an API Key.
Please reach out to our team to request an API Key if you haven’t received one already.

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Make Your First Request

Use the endpoint below to get a swap quote. You’ll need to pass your API key in the X-API-Key header.

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Get a Quote

This example requests a quote for swapping WBNB to USDT on BSC. 
curl -X POST https://api.nexroute.io/v1/quote \
  -H "Content-Type: application/json" \
  -H "X-API-Key: <YOUR_API_KEY>" \
  -d '{
    "tokenIn": "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c",
    "tokenOut": "0x55d398326f99059fF775485246999027B3197955",
    "amountIn": "1000000000000000000"
  }'

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Response

The API returns a JSON object containing the amountOut, estimated gas, calldata, and other transaction details. 
{
  "amountOut": "8643194859422640072",
  "gas": 237995,
  "calldata": "0x8f01f039...",
  "router": "0x365193e7e200CC2Ce82eb67DB0Fed117F8C7c660",
  "spender": "0x365193e7e200CC2Ce82eb67DB0Fed117F8C7c660"
}

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Next Steps

Now that you’ve successfully fetched a quote, check out the Authentication page or explore the full API Reference.