---
title: "SIWE Authentication with Nethereum - Air Market"
description: "If your users already have a wallet, that can be their login instead of another password. Sign-In with Ethereum is the standard way to do it, and this covers implementing it in .NET with Nethereum. R…"
canonical: "https://airmarket.ai/app/siwe"
---

[Air Market](/) / [Developer Tools](/category/devtools) / SIWE Authentication with Nethereum

Skill by [Nethereum](/@nethereum)

# SIWE Authentication with Nethereum

Let people sign in to your app with their wallet

## What this does

If your users already have a wallet, that can be their login instead of another password. Sign-In with Ethereum is the standard way to do it, and this covers implementing it in .NET with Nethereum. Reach for it when you are adding authentication to a web app and want the wallet to be the identity.

### Top 3 things it does for you

- Add wallet login to a web app
- Implement Sign-In with Ethereum
- Gate access behind an NFT

## Information

**SIWE Authentication 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/siwe) |
| GitHub stars | 2,256 (as of Nov 2026) |

## Security report

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

**What SIWE Authentication with Nethereum's check was run against**

|  |  |
| --- | --- |
| Commit | 1d68d2b036054226a11179eb1d1bda57f30a5365 |
| Content hash | 40c95211d6385a1770ffede380fca03815df1c9fbc9d319fed0b32ffea45438b |
| Files read | [Browse the files at this exact commit](https://github.com/Nethereum/Nethereum/blob/1d68d2b036054226a11179eb1d1bda57f30a5365/plugins/nethereum-skills/skills/siwe/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 SIWE Authentication with Nethereum](/security/siwe)

## About SIWE Authentication with Nethereum

This skill covers implementing Sign-In with Ethereum, the EIP-4361 authentication standard, using Nethereum in .NET.

It covers wallet login and crypto authentication generally, including NFT-gated access and RECAP capabilities under EIP-5573.

It is also aimed at Blazor and ASP.NET apps that need Ethereum-based authentication.

## What's inside

- SKILL.md - instructions

## Questions

### Is SIWE Authentication with Nethereum safe to install?

AIR scanned this exact version of SIWE Authentication 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/siwe.

### How do I install SIWE Authentication with Nethereum?

Open https://airmarket.ai/app/siwe 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/siwe. 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/siwe>