---
title: "Snapshot Testing with Verify - Air Market"
description: "Something in your app produces output you care about staying the same, and small unintended changes slip through review. This uses Verify to record an approved version and flag any difference next ti…"
canonical: "https://airmarket.ai/app/snapshot-testing"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Snapshot Testing with Verify

Skill by [Aaron Stannard](/@aaronontheweb)

# Snapshot Testing with Verify

See exactly what changed in your output before it ships

## What this does

Something in your app produces output you care about staying the same, and small unintended changes slip through review. This uses Verify to record an approved version and flag any difference next time. Reach for it when you want a human to look at what changed rather than write an assertion for every field.

### Top 3 things it does for you

- Snapshot test .NET output with Verify
- Approve an API surface
- Catch a change you did not mean to make

## Information

**Snapshot Testing with Verify at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Aaron Stannard](/@aaronontheweb) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 9 KB |
| Licence | MIT |
| Repository | [Aaronontheweb/dotnet-skills](https://github.com/Aaronontheweb/dotnet-skills/tree/316756fb309b9ee42d86d5db0d70504d62f3b0c3/skills/snapshot-testing) |
| GitHub stars | 1,123 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Snapshot Testing with Verify and flagged nothing. AIR's verdict: **safe**.

**What Snapshot Testing with Verify's check was run against**

|  |  |
| --- | --- |
| Commit | 316756fb309b9ee42d86d5db0d70504d62f3b0c3 |
| Content hash | 72b575f6e7a3ecc63bb28e93de74e8c31f3b9a7b1b06fabeb9ac9e7e7ad4ad87 |
| Files read | [Browse the files at this exact commit](https://github.com/Aaronontheweb/dotnet-skills/blob/316756fb309b9ee42d86d5db0d70504d62f3b0c3/skills/snapshot-testing/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 Snapshot Testing with Verify](/security/snapshot-testing)

## About Snapshot Testing with Verify

Snapshot testing in .NET with Verify. You approve the output you expect, and later runs are compared against that baseline.

It applies to API surfaces, HTTP responses, rendered emails and serialized outputs, and surfaces unintended changes through baseline files a human reviews.

## What's inside

- SKILL.md - instructions

## Questions

### Is Snapshot Testing with Verify safe to install?

AIR scanned this exact version of Snapshot Testing with Verify and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 316756fb309b, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/snapshot-testing.

### How do I install Snapshot Testing with Verify?

Open https://airmarket.ai/app/snapshot-testing 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/Aaronontheweb/dotnet-skills/tree/316756fb309b9ee42d86d5db0d70504d62f3b0c3/skills/snapshot-testing. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Aaron Stannard](/@aaronontheweb)

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Canonical URL: <https://airmarket.ai/app/snapshot-testing>