---
title: "Address Utilities with Nethereum - Air Market"
description: "Ethereum addresses are long strings where a single wrong character sends funds nowhere. This checks that an address is well formed, puts it in the standard checksummed shape, and compares two of them…"
canonical: "https://airmarket.ai/app/address-utils"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Address Utilities with Nethereum

Skill by [Nethereum](/@nethereum)

# Address Utilities with Nethereum

Stop bad Ethereum addresses before they reach a transaction

## What this does

Ethereum addresses are long strings where a single wrong character sends funds nowhere. This checks that an address is well formed, puts it in the standard checksummed shape, and compares two of them properly. Reach for it whenever an address arrives from a user or another system in your .NET code.

### Top 3 things it does for you

- Check whether an address is valid
- Add or verify a checksum on an address
- Compare two addresses safely

## Information

**Address Utilities with Nethereum at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Nethereum](/@nethereum) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 5 KB |
| Licence | MIT |
| Repository | [Nethereum/Nethereum](https://github.com/Nethereum/Nethereum/tree/1d68d2b036054226a11179eb1d1bda57f30a5365/plugins/nethereum-skills/skills/address-utils) |
| GitHub stars | 2,256 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Address Utilities with Nethereum and flagged nothing. AIR's verdict: **safe**.

**What Address Utilities with Nethereum's check was run against**

|  |  |
| --- | --- |
| Commit | 1d68d2b036054226a11179eb1d1bda57f30a5365 |
| Content hash | 653c3ceae85b3fd8b61162806b545e9c3904fa97650bc0477856b0afbd3234d7 |
| Files read | [Browse the files at this exact commit](https://github.com/Nethereum/Nethereum/blob/1d68d2b036054226a11179eb1d1bda57f30a5365/plugins/nethereum-skills/skills/address-utils/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Address Utilities with Nethereum](/security/address-utils)

## About Address Utilities with Nethereum

Addresses are the one input where a typo is unrecoverable. This covers validating and formatting Ethereum addresses with Nethereum, including EIP-55 checksums and comparing addresses.

It also covers zero address handling, UniqueAddressList, and address padding.

## What's inside

- SKILL.md - instructions

## Questions

### Is Address Utilities with Nethereum safe to install?

AIR scanned this exact version of Address Utilities with Nethereum and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 1d68d2b03605, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/address-utils.

### How do I install Address Utilities with Nethereum?

Open https://airmarket.ai/app/address-utils on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/Nethereum/Nethereum/tree/1d68d2b036054226a11179eb1d1bda57f30a5365/plugins/nethereum-skills/skills/address-utils. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Nethereum](/@nethereum)

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Canonical URL: <https://airmarket.ai/app/address-utils>