e2e

An end-to-end testing command that detects whether a repository uses Playwright or Cypress, tools for testing complete user journeys in a browser. It derives critical flows from acceptance criteria, writes tests, runs them, and records genuine flaky tests.

In plain words
What is it for?
Use it to test sign-in, checkout, forms, and other critical journeys with page objects, accessible selectors, and waits based on conditions rather than fixed delays.
Why use it?
It avoids imposing a new testing framework when none exists and turns important user requirements into repeatable browser checks. Flaky tests are identified instead of silently treated as reliable.

Command

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.

agentmods
npx agentmods add commands/jdanigo/hydraia/e2e
Clone the repo
git clone --depth 1 https://github.com/jdanigo/hydraia
Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 260 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00023 $0.00260
Opus 5 $0.00012 $0.00130
Sonnet 5 $0.00005 $0.00052
Haiku 4.5 $0.00002 $0.00026

Measured yesterday against content hash 4d3c3f432028, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

e2e 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 yesterday.

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.

commands/e2e.md · 11 lines

What it actually says

Dispatch the e2e-runner agent (mode: implement) following the e2e-testing skill. Detect the repo's E2E framework from evidence (Playwright/Cypress); if none exists, report it as a plan task rather than installing one. Derive critical user journeys from the acceptance criteria (or the optional focus), write them with page objects, role/testid selectors, and condition-based waits, run the suite, and quarantine any genuine flake with a reason. Report flows written, pass/fail, and quarantined specs.

Focus: $ARGUMENTS

When finished, record telemetry for this run: printf 'brief\n' > <base>/.run-complete (where <base> is the artifacts dir resolved at the storage gate — docs/hydraia/ by default, or the external dir if chosen). The Stop hook logs this run's real token/model/sub-agent usage to the local dashboard (delta-scoped per session, so it never double-counts). Do not hand-write the numbers.

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. yesterday First seen · 11 lines · 23 tokens per session scan A 4d3c3f432028

Subscribe to this mod's changes

e2e is a command published in the GitHub repository jdanigo/hydraia (8 stars, last pushed 11d ago), licensed MIT. It adds 23 tokens to every session and 260 once invoked, about $0.0001 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 2026-08-31.