Borrowing it
Nothing to install: this file belongs to UKHO/UKHO.GitHubCopilot.ToolKit. 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/UKHO/UKHO.GitHubCopilot.ToolKit/main/.github/instructions/playwright.instructions.mdgit clone --depth 1 https://github.com/UKHO/UKHO.GitHubCopilot.ToolKitWrote 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/instructions/ukho/ukho.githubcopilot.toolkit/playwright)<a href="https://agentmods.dev/instructions/ukho/ukho.githubcopilot.toolkit/playwright"><img src="https://agentmods.dev/badge/instructions/ukho/ukho.githubcopilot.toolkit/playwright/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/instructions/ukho/ukho.githubcopilot.toolkit/playwright"><img src="https://agentmods.dev/badge/instructions/ukho/ukho.githubcopilot.toolkit/playwright.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00673 | $0.00673 |
| Opus 5.5 | $0.00269 | $0.00269 |
| Sonnet 5.5 | $0.00135 | $0.00135 |
| Haiku 4.5 | $0.00067 | $0.00067 |
Grade A, and why
UKHO.GitHubCopilot.ToolKit playwright.instructions.md 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 — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Playwright .NET testing guidelines
Overview
These instructions define how UI tests are authored with Playwright for .NET in this repository. The goal is resilient, accessible, low-flake tests that are easy to review and diagnose. The practices in this file are repository defaults for Playwright-based UI tests unless a documented exception applies.
Scope
Applies to: test/**/*.cs, test/**/*.csproj
- Applies when creating or updating Playwright UI tests.
- The practices in this file are defaults for Playwright-based UI testing unless a narrower file or an explicitly documented exception applies.
- When a work item needs a justified deviation from these defaults, document the reason in the relevant project or work-package documentation so the deviation remains reviewable.
- These rules are additive to
/.github/instructions/folders.instructions.md(tests live undertest/).
Instructions
MUST
-
Keep Playwright tests under
test/. -
Use one Playwright test framework per test project:
- Default to xUnit:
Microsoft.Playwright.Xunit
- Default to xUnit:
-
Prefer inheriting from
PageTestfor Playwright tests. -
Use Playwright web-first assertions (
Expect(...)) for UI assertions so checks auto-retry. -
Use
Test.StepAsync()to group interactions into meaningful steps. -
Prefer user-facing, accessibility-first locators:
GetByRole,GetByLabel,GetByPlaceholder,GetByText- Use
GetByTestIdonly when a stabledata-testidexists and role/label/text locators are not practical.
-
Rely on Playwright auto-waiting.
- Avoid explicit sleeps and time-based waits.
- Prefer waiting via assertions (for example
ToHaveTextAsync,ToBeVisibleAsync,ToHaveURLAsync).
SHOULD
- Keep one test class focused on one feature/page area.
- Name test files using
<FeatureOrPage>Tests.cs. - Use
ToMatchAriaSnapshotAsyncto validate accessibility tree structure for components where markup is expected to be stable. - Use
ToHaveURLAsyncafter navigation-triggering actions. - MCP MAY be used as an authoring aid when supported, but standard Playwright/.NET execution SHOULD remain the primary supported local and CI path.
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 · 67 lines · 673 tokens per session scan A 50aafe6cf197
UKHO.GitHubCopilot.ToolKit playwright.instructions.md is an instructions file published in the GitHub repository UKHO/UKHO.GitHubCopilot.ToolKit (1 stars, last pushed 4mo ago), licensed MIT. It adds 673 tokens to every session, about $0.0027 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 2026-08-31.
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