.NET MAUI is a C# and XAML framework for building native mobile and desktop applications from one shared codebase. Developers use it to create apps for Android, iOS, iPadOS, macOS, and Windows. The catalogue entries provide skills, instructions, and agents for working with .NET MAUI.
Borrowing it
Nothing to install: this file belongs to dotnet/maui. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/dotnet/maui/main/.github/skills/verify-tests-fail-without-fix/SKILL.mdgit clone --depth 1 https://github.com/dotnet/mauiWrote 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.
[](https://agentmods.dev/skills/dotnet/maui/verify-tests-fail-without-fix)<a href="https://agentmods.dev/skills/dotnet/maui/verify-tests-fail-without-fix"><img src="https://agentmods.dev/badge/skills/dotnet/maui/verify-tests-fail-without-fix/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.
<a href="https://agentmods.dev/skills/dotnet/maui/verify-tests-fail-without-fix"><img src="https://agentmods.dev/badge/skills/dotnet/maui/verify-tests-fail-without-fix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 31 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00060 | $0.02578 |
| Opus 5.5 | $0.00024 | $0.01031 |
| Sonnet 5.5 | $0.00012 | $0.00516 |
| Haiku 4.5 | $0.00006 | $0.00258 |
Grade A, and why
verify-tests-fail-without-fix 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 265 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Verify Tests Fail Without Fix
Verifies tests actually catch the issue. Supports all test types (UI tests, unit tests, XAML tests, device tests) and two workflow modes.
Supported Test Types
| Test Type | Auto-Detected From | Runner |
|---|---|---|
| UITest | TestCases.Shared.Tests/, TestCases.HostApp/ |
BuildAndRunHostApp.ps1 |
| DeviceTest | DeviceTests/ |
Run-DeviceTests.ps1 |
| UnitTest | *.UnitTests/, Graphics.Tests/ |
dotnet test |
| XamlUnitTest | Xaml.UnitTests/ |
dotnet test |
Test type is auto-detected from changed files. Override with -TestType if needed.
-Platform is required for UI and Device tests. It selects which platform to verify the fix on. Unit and XAML tests do not require -Platform.
Activation Guard
🛑 This skill ONLY verifies that existing tests reproduce a bug. Do NOT activate for:
- Writing new tests → use write-tests-agent
- Running tests without verification context → use run-device-tests
- Code review → use code-review skill
- General test advice
Requires: a platform and either test files in the PR or an explicit TestFilter.
⚠️ CRITICAL: Inverted Pass/Fail Semantics
In this skill, test outcomes mean the OPPOSITE of normal:
| Test Result (without fix) | Verification Result | Why |
|---|---|---|
| Tests FAIL | ✅ GOOD | Tests detect the bug |
| Tests PASS | ❌ BAD | Tests miss the bug |
NEVER say "verification passed" when tests PASS without the fix.
Workflow
Interpretation-Only Requests
If the caller asks how to read or report verification output, explain the result contract below without running the script. Do not turn a question about result semantics into a verification run.
Step 1: Determine Mode
- Check if fix files exist in the PR (non-test code changes detected by the script from the git diff)
- If fix files present → Full Verification mode (
-RequireFullVerification) - If no fix files → Verify Failure Only mode (omit the flag)
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 265 lines · 60 tokens per session scan A a44812682070
verify-tests-fail-without-fix is a skill published in the GitHub repository dotnet/maui (23,322 stars, last pushed today), licensed MIT. It adds 60 tokens to every session and 2,578 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.
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