---
title: "SIWE Authentication in Blazor - Air Market"
description: "You want people to log into your web app with their Ethereum wallet instead of a username and password. This covers doing that in Blazor: proving they hold the wallet, then keeping them signed in and…"
canonical: "https://airmarket.ai/app/blazor-authentication"
---

[Air Market](/) / [Developer Tools](/category/devtools) / SIWE Authentication in Blazor

Skill by [Nethereum](/@nethereum)

# SIWE Authentication in Blazor

Let people sign into your Blazor app with their wallet

## What this does

You want people to log into your web app with their Ethereum wallet instead of a username and password. This covers doing that in Blazor: proving they hold the wallet, then keeping them signed in and controlling what they can see. Reach for it when you are adding login to a .NET web app.

### Top 3 things it does for you

- Add wallet login to a Blazor app
- Issue a token once someone has signed in
- Keep a signed-in session going

## Information

**SIWE Authentication in Blazor 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 | 7 KB |
| Licence | MIT |
| Repository | [Nethereum/Nethereum](https://github.com/Nethereum/Nethereum/tree/1d68d2b036054226a11179eb1d1bda57f30a5365/plugins/nethereum-skills/skills/blazor-authentication) |
| GitHub stars | 2,256 (as of Nov 2026) |

## Security report

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

**What SIWE Authentication in Blazor's check was run against**

|  |  |
| --- | --- |
| Commit | 1d68d2b036054226a11179eb1d1bda57f30a5365 |
| Content hash | 9efcf05f044334345e516666c4be6193fc81fa08affec64977cf12e326a3cc8c |
| Files read | [Browse the files at this exact commit](https://github.com/Nethereum/Nethereum/blob/1d68d2b036054226a11179eb1d1bda57f30a5365/plugins/nethereum-skills/skills/blazor-authentication/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 in Blazor](/security/blazor-authentication)

## About SIWE Authentication in Blazor

This covers implementing Sign-In with Ethereum, also known as SIWE or EIP-4361, in Blazor with .NET and C#. It includes JWT tokens, session management, and AuthorizeView.

It applies to wallet-based login questions, using JWT with SIWE, Blazor authentication with Ethereum wallets, and EthereumAuthenticationStateProvider.

## What's inside

- SKILL.md - instructions

## Questions

### Is SIWE Authentication in Blazor safe to install?

AIR scanned this exact version of SIWE Authentication in Blazor 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/blazor-authentication.

### How do I install SIWE Authentication in Blazor?

Open https://airmarket.ai/app/blazor-authentication 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/blazor-authentication. 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/blazor-authentication>