> For the complete documentation index, see [llms.txt](https://docs.metasleuth.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.metasleuth.io/blocksec-aml-api/introduction.md).

# Introduction

The BlockSec AML API Service offers two main sets of APIs, providing services for [**address label queries**](/blocksec-aml-api/address-label-api.md) and [**risk score queries**](/blocksec-aml-api/wallet-screening-api.md), respectively.

## API Overview

### Address Label APIs

<table><thead><tr><th width="133">Method</th><th>API</th></tr></thead><tbody><tr><td><code>GET</code></td><td><a href="/pages/UHzHmBv9FSeyIn16P9lr#get-supported-chains">Get Supported Chains</a></td></tr><tr><td><code>POST</code></td><td><a href="/pages/UHzHmBv9FSeyIn16P9lr#get-address-labels">Get Address Labels</a> (in <a href="/pages/UHzHmBv9FSeyIn16P9lr#get-address-labels-in-batch">Batch</a>)</td></tr><tr><td><code>POST</code></td><td><a href="/pages/UHzHmBv9FSeyIn16P9lr#get-entity-info">Get Entity Info</a></td></tr></tbody></table>

### Risk Score APIs

<table><thead><tr><th width="132">Method</th><th>API</th></tr></thead><tbody><tr><td><code>GET</code></td><td><a href="/pages/1k4XyJNHEsxQDLas403U#get-supported-chains">Get Supported Chains</a></td></tr><tr><td><code>GET</code></td><td><a href="/pages/1k4XyJNHEsxQDLas403U#get-risk-indicators">Get Risk Indicators</a></td></tr><tr><td><code>POST</code></td><td><a href="/pages/1k4XyJNHEsxQDLas403U#get-address-compliance-risk">Get Address Risk Score</a></td></tr></tbody></table>

## Rate Limits

The rate limit for each API request is five requests per second, and each subscription plan limits the number of addresses that can be **queried daily**. See our[ subscription page](https://metasleuth.io/plans#apis) for more details.

## Read More

[Authentication](/blocksec-aml-api/introduction/authentication.md)

[Response Format](/blocksec-aml-api/introduction/response-format.md)