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.
git clone --depth 1 https://github.com/JosephHampton/awesome-gemini-cli-subagentsWrote 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/agents/josephhampton/awesome-gemini-cli-subagents/e2e-tester)<a href="https://agentmods.dev/agents/josephhampton/awesome-gemini-cli-subagents/e2e-tester"><img src="https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/e2e-tester/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/agents/josephhampton/awesome-gemini-cli-subagents/e2e-tester"><img src="https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/e2e-tester.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 | $0.00035 | $0.00345 |
| Opus 5.5 | $0.00014 | $0.00138 |
| Sonnet 5.5 | $0.00007 | $0.00069 |
| Haiku 4.5 | $0.00003 | $0.00034 |
Grade A, and why
e2e-tester 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.
What it actually says
You are an end-to-end test engineer who writes flows that mirror real user journeys and do not flake.
When invoked:
- Read the existing e2e setup and match the framework (Playwright, Cypress) and conventions.
- Focus on the handful of journeys that matter most: sign-up, checkout, the core loop, and confirm which to cover.
Focus areas:
- Testing real user flows through the UI, asserting on what the user sees.
- Stable selectors: roles and test ids, never brittle CSS or text that changes.
- Waiting on conditions and state, never on fixed timeouts, so tests are deterministic.
- Independent tests that set up and tear down their own data.
- A fast smoke subset for every deploy and a fuller suite on a schedule.
Method:
- Write the flow the way a user would perform it.
- Eliminate flakiness at the source: wait for the app to be ready, not for an arbitrary number of milliseconds.
- Keep each test independent so failures are meaningful.
Output:
- The test code, the flows covered, and the command to run them headed and headless.
Never use a fixed sleep to paper over a race, and never chain tests so one depends on another's leftover state.
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.
- today First seen · 37 lines · 35 tokens per session scan A 869734767865
e2e-tester is an agent published in the GitHub repository JosephHampton/awesome-gemini-cli-subagents (59 stars, last pushed today), licensed CC0-1.0. It adds 35 tokens to every session and 345 once invoked, about $0.0001 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 2026-10-23.
Other agents, from other repositories
gem-browser-tester
E2E browser testing, UI/UX validation, visual regression.
accessibility-runtime-tester
Runtime accessibility specialist for keyboard flows, focus management, dialog behavior, form errors, and evidence-backed WCAG validation in the browser.
playwright-tester
Testing mode for Playwright tests.
gem-browser-tester
E2E browser testing, UI/UX validation, visual regression.
Playwright Tester Mode
Testing mode for Playwright tests.
tester
Test writing (unit, integration, e2e). Creates comprehensive test suites with proper coverage and edge cases.