> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nexroute.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Best-execution swap routing with calldata-ready quotes for EVM chains

nexroute Router is a multi-chain swap routing engine. A single request returns the best available quote across aggregated liquidity along with the calldata, gas estimate, and router contract needed to execute it on-chain.

## What you get

* **Best execution**: aggregates V2, V3, and concentrated-liquidity sources; returns the path with the highest output for your input amount
* **Calldata-ready**: response includes the exact calldata, router, and spender. Paste it into your transaction and submit
* **Low-latency quotes**: typical response time in single-digit milliseconds
* **Gas accuracy**: returned gas estimates reflect real execution paths, not heuristics

## Getting started

<CardGroup cols={2}>
  <Card title="Quickstart" icon="bolt" href="/router/quickstart">
    Make your first quote request in minutes.
  </Card>

  <Card title="Authentication" icon="key" href="/router/authentication">
    API key setup and usage.
  </Card>

  <Card title="Security" icon="shield-check" href="/router/security">
    Guidelines and policies for safe integration.
  </Card>

  <Card title="Benchmark" icon="chart-line" href="/router/benchmark">
    Independent performance comparison against other aggregators.
  </Card>
</CardGroup>

## API reference

<Card title="API Reference" icon="code" href="/api-reference/quote/get-swap-quote">
  Complete OpenAPI specification for the quote endpoint.
</Card>