snapshot-testing

snapshot-testing is a skill for Claude Code, Codex from almasumdev/awesome-mobile-testing-agent-skills. It costs 55 tokens per session (1,264 once invoked), scanned A, original, no licence file.

Guidance for snapshot tests, which save a UI image or output as a reference and compare later results against it, across several mobile frameworks.

In plain words
What is it for?
Use it to lock down interface appearance and find rendering regressions in Android, iOS, Flutter, or React Native apps.
Why use it?
It helps catch accidental visual changes that ordinary behavior tests may miss.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to lock down interface appearance and find rendering regressions in Android, iOS, Flutter, or React Native apps.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/almasumdev/awesome-mobile-testing-agent-skills/snapshot-testing
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add almasumdev/awesome-mobile-testing-agent-skills --skill snapshot-testing
Clone the repo
git clone --depth 1 https://github.com/almasumdev/awesome-mobile-testing-agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for snapshot-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/almasumdev/awesome-mobile-testing-agent-skills/snapshot-testing/github.svg)](https://agentmods.dev/skills/almasumdev/awesome-mobile-testing-agent-skills/snapshot-testing)
Your own site
<a href="https://agentmods.dev/skills/almasumdev/awesome-mobile-testing-agent-skills/snapshot-testing"><img src="https://agentmods.dev/badge/skills/almasumdev/awesome-mobile-testing-agent-skills/snapshot-testing/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for snapshot-testing

Your own site · 80×15
<a href="https://agentmods.dev/skills/almasumdev/awesome-mobile-testing-agent-skills/snapshot-testing"><img src="https://agentmods.dev/badge/skills/almasumdev/awesome-mobile-testing-agent-skills/snapshot-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,264 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00055 $0.01264
Opus 5 $0.00028 $0.00632
Sonnet 5 $0.00011 $0.00253
Haiku 4.5 $0.00006 $0.00126

Measured 8d ago against content hash e4046bdc7efd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

snapshot-testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.github/skills/ui/snapshot-testing/SKILL.md · 117 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 117 lines · 55 tokens per session scan A e4046bdc7efd

Subscribe to this mod's changes

snapshot-testing is a skill published in the GitHub repository almasumdev/awesome-mobile-testing-agent-skills (1 stars, last pushed 4mo ago), with no licence file. It adds 55 tokens to every session and 1,264 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-01.

Related

Other skills, from other repositories

mobile-tester

You are the Mobile Tester Specialist. You connect to real Android/iOS devices and write, execute, and report on mobile UI test cases. You master THREE testing modalities.

buiphucminhtam/forgewright · 81 tokens

compose-ui-testing

Expert guidance on Jetpack Compose UI testing with createAndroidComposeRule, semantics matchers, synchronization, and screenshot tests with Paparazzi or Roborazzi. Use this for instrumented and screenshot UI tests.

almasumdev/awesome-kotlin-android-agent-skills · 46 tokens

espresso-java

Expert guidance on Android UI testing in Java with Espresso, IdlingResource, Hilt test rules, and Robolectric for fast JVM UI tests. Use this when writing instrumented tests, replacing flaky sleeps, or setting up a hermetic UI test harness.

almasumdev/awesome-java-android-agent-skills · 54 tokens

automated-a11y-tools

Automated accessibility tooling — Accessibility Scanner (Android), Accessibility Inspector + XCUIAccessibilityAudit (iOS), axe-core Flutter and RN, Espresso a11y checks. Use this to wire a11y checks into CI.

almasumdev/awesome-mobile-accessibility-agent-skills · 51 tokens

ios-testing

Expert guidance on iOS unit and snapshot testing with XCTest, the new Swift Testing framework, and swift-snapshot-testing. Use when writing or auditing tests.

almasumdev/awesome-ios-agent-skills · 34 tokens

ios-ui-testing

Expert guidance on XCUITest — accessibility identifiers, robust element queries, screenshot flows, test plans, and CI stability. Use when writing end-to-end UI tests.

almasumdev/awesome-ios-agent-skills · 37 tokens