> ## Documentation Index
> Fetch the complete documentation index at: https://docs.0xradar.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Multi-chain wallet intelligence for developers

# 0xRadar

0xRadar is a multi-chain wallet intelligence API built for developers who need real-time token balances, portfolio tracking, and sweep cost analysis across 7 EVM chains.

## What it does

* **Single-chain balances**: Query every ERC-20 holding for any address on Ethereum, Arbitrum, Base, Optimism, Polygon, BSC, or HyperEVM.
* **Multi-chain portfolio**: Aggregate balances across chains in one call with USD denomination.
* **Sweep quotes**: Estimate gas costs to consolidate dust tokens from multiple chains into one.

## Who it's for

* **Wallet app builders** building portfolio screens
* **Security tool developers** monitoring treasury or hot wallets
* **DeFi integrators** needing pre-transaction balance checks
* **Python/JS developers** who want typed, fast HTTP APIs without running their own nodes

## Supported chains

| Chain           | Identifier |
| --------------- | ---------- |
| Ethereum        | `ethereum` |
| Arbitrum One    | `arbitrum` |
| Base            | `base`     |
| Optimism        | `optimism` |
| Polygon PoS     | `polygon`  |
| BNB Smart Chain | `bsc`      |
| HyperEVM        | `hyperevm` |

## Base URL

```
https://api.0xradar.app
```

All endpoints are served over HTTPS. Version `v1` is the current stable release.

## Next steps

<CardGroup cols={2}>
  <Card title="Quickstart" icon="bolt" href="/getting-started/quickstart">
    Make your first API call in 5 minutes
  </Card>

  <Card title="Authentication" icon="key" href="/getting-started/authentication">
    Get an API key and understand tiers
  </Card>
</CardGroup>