---
layout: page
title: "Etherscan"
description: "Instructions on how to integrate Etherscan.io data within Home Assistant."
date: 2017-06-01 16:20
sidebar: true
comments: false
sharing: true
footer: true
logo: etherscan.png
ha_category: Finance
ha_release: 0.47
ha_iot_class: "Cloud Polling"
---

The `Etherscan` sensor platform displays Ether and ERC-20 token balances from [Etherscan.io](https://etherscan.io).

To add the Etherscan sensor to your installation, specify an Ethereum address to watch in the `configuration.yaml` file. You can also optionally provide a token name to retrieve and ERC-20 token balance. If no token is provided then the balance retrieved will be in ETH. You can also optionally provide the token contract address in case the token name is not found.

```yaml
# Example configuration.yaml entry
sensor:
  - platform: etherscan
    address: '0xfB6916095ca1df60bB79Ce92cE3Ea74c37c5d359'
  - platform: etherscan
    address: "0xfB6916095ca1df60bB79Ce92cE3Ea74c37c5d359"
    token: OMG
  - platform: etherscan
    address: "0xfB6916095ca1df60bB79Ce92cE3Ea74c37c5d359"
    token_address: "0xef68e7c694f40c8202821edf525de3782458639f"
    token: LRC
```

{% configuration %}
address:
  description: Ethereum wallet address to watch.
  required: true
  type: string
name:
  description: The name of the sensor used in the frontend.
  required: false
  type: string
  default: ETH Balance
token:
  description: The ERC20 token symbol. i.e., OMG.
  required: false
  type: string
token_address:
  description: The ERC20 token contract address.
  required: false
  type: string
{% endconfiguration %}
