playwright-test-coverage

playwright-test-coverage is a command for GitHub Copilot from microsoft/playwright. It costs 3 tokens per session (323 once invoked), scanned A, original, Apache-2.0.

Produce test coverage.

Command for GitHub Copilot ✓ vendor

Written for GitHub Copilot: a Copilot chat mode or prompt. Also seen: agent in frontmatter; mentions subagents.

Install with agentmods
npx agentmods add commands/microsoft/playwright/playwright-test-coverage
About the project

Playwright is a framework for automating and testing websites through one API that drives Chromium, Firefox, and WebKit. Developers use it for end-to-end tests, browser automation scripts, and AI-agent web interactions. The catalogue add-ons help coding and AI agents use Playwright for testing and browser automation.

microsoft/playwright · 95,789 stars · on GitHub · playwright.dev

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.

Clone the repo
git clone --depth 1 https://github.com/microsoft/playwright

Made for: GitHub Copilot.

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 playwright-test-coverage

README.md
[![agentmods](https://agentmods.dev/badge/commands/microsoft/playwright/playwright-test-coverage/github.svg)](https://agentmods.dev/commands/microsoft/playwright/playwright-test-coverage)
Your own site
<a href="https://agentmods.dev/commands/microsoft/playwright/playwright-test-coverage"><img src="https://agentmods.dev/badge/commands/microsoft/playwright/playwright-test-coverage/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 playwright-test-coverage

Your own site · 80×15
<a href="https://agentmods.dev/commands/microsoft/playwright/playwright-test-coverage"><img src="https://agentmods.dev/badge/commands/microsoft/playwright/playwright-test-coverage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 323 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 $0.00003 $0.00323
Opus 5 $0.00002 $0.00161
Sonnet 5 $0.00001 $0.00065
Haiku 4.5 $0.00000 $0.00032

Measured today against content hash 87f0bb03d7b7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

playwright-test-coverage 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 today.

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.

examples/todomvc/.github/prompts/playwright-test-coverage.prompt.md · 32 lines

What it actually says

Parameters:

  • Task: the task to perform
  • Seed file (optional): the seed file to use, defaults to tests/seed.spec.ts
  • Test plan file (optional): the test plan file to write, under specs/ folder.
  1. Call #playwright-test-planner subagent with prompt:
  1. For each test case from the test plan file (1.1, 1.2, ...), one after another, not in parallel, call #playwright-test-generator subagent with prompt:
  1. Call #playwright-test-healer subagent with prompt:

Run all tests and fix the failing ones one after another.

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. today First seen · 32 lines · 3 tokens per session scan A 87f0bb03d7b7

Subscribe to this mod's changes

playwright-test-coverage is a command published in the GitHub repository microsoft/playwright (95,789 stars, last pushed yesterday), licensed Apache-2.0. It adds 3 tokens to every session and 323 once invoked, about $0.0000 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 2026-09-08.