Uno Platform is an open-source .NET development platform that lets developers build native mobile, web, desktop, and embedded applications from one C# and XAML codebase. It is intended for .NET developers who want to share application code across multiple operating systems and device types. The catalogue entries support development workflows for Uno Platform with skills, agents, commands, and instructions.
Borrowing it
Nothing to install: this file belongs to unoplatform/uno. 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/unoplatform/uno/master/.claude/skills/runtime-tests/SKILL.mdgit clone --depth 1 https://github.com/unoplatform/unoWrote 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/unoplatform/uno/runtime-tests)<a href="https://agentmods.dev/skills/unoplatform/uno/runtime-tests"><img src="https://agentmods.dev/badge/skills/unoplatform/uno/runtime-tests/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/unoplatform/uno/runtime-tests"><img src="https://agentmods.dev/badge/skills/unoplatform/uno/runtime-tests.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00025 | $0.02967 |
| Opus 5.5 | $0.00010 | $0.01187 |
| Sonnet 5.5 | $0.00005 | $0.00593 |
| Haiku 4.5 | $0.00003 | $0.00297 |
Grade A, and why
runtime-tests scanned grade A with 1 finding 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 7d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
python -c "import urllib.parse; print(urllib.parse.quote('$1', safe=''))" How it starts
The opening of the file, as written. The whole thing — 273 lines — stays where its author put it; the contents beside it link to each section on GitHub.
User Input
$ARGUMENTS
You MUST consider the user input before proceeding (if not empty).
Overview
You are executing the Run Tests Skill. This skill builds and runs Uno Platform runtime tests with the correct base64 filter encoding that the test runner requires. It handles the non-obvious encoding requirement and provides correct platform-specific commands.
Execution Workflow
Phase 0: Parse User Input
Determine what to run from the user's input:
- All tests: No filter needed
- Specific test class: e.g.,
Given_Button→ resolve to fully qualified name - Specific test method: e.g.,
Given_Button.When_ContentSet→ resolve to fully qualified name - Multiple tests: Pipe-separated list of fully qualified names
If the user provides partial names, search src/Uno.UI.RuntimeTests/ to resolve fully qualified test names (namespace + class + method).
Determine target platform from user input. Supported platforms:
| Platform | Keyword(s) | Default |
|---|---|---|
| Skia Desktop | desktop, skia, or unspecified |
Yes |
| Skia WASM | wasm, webassembly, browser |
No |
Default: Skia Desktop (fastest build and execution).
Choose Skia WASM only when:
- The user explicitly asks for WASM/browser testing, OR
- The bug or behavior is WASM-specific (e.g., DOM interaction, browser rendering, JS interop)
Strict mode: If the user input contains the keyword strict, omit the -p:UnoFastDevBuild=true and -p:UnoTargetFrameworkOverride=net11.0-desktop flags from the build command in Phase 1 so the build runs with full CI-equivalent analyzer coverage and all cross-targeted TFMs. Use this only when verifying that a change still compiles cleanly under CI strictness — for normal iteration the default (fast) flags should be left on.
Phase 1: Build the Test App
CRITICAL: Set timeout to 15+ minutes. NEVER cancel builds.
The default build commands below pass -p:UnoFastDevBuild=true (disables analyzers for local iteration — has no effect on CI) and -p:UnoTargetFrameworkOverride=net11.0-desktop (skips the redundant cross-targeted output for Skia libraries). Combined, these cut a clean SamplesApp desktop build from ~3:23 → ~1:59 and a Uno.UI-incremental rebuild from ~2:23 → ~0:58 on a 32-core Windows machine. Omit both flags if the user requested strict mode (see Phase 0).
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.
- 7d ago Changed · +16 lines abea54fa43f4
- 21d ago Changed 90ce9ee8a235
- 1mo ago Changed b60cafb38317
- 1mo ago First seen · 257 lines · 25 tokens per session scan A c039c5e3a67b
runtime-tests is a skill published in the GitHub repository unoplatform/uno (10,080 stars, last pushed today), licensed Apache-2.0. It adds 25 tokens to every session and 2,967 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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