e2e-author

An assistant for creating or updating end-to-end tests, which test complete user flows through the application.

In plain words
What is it for?
Use it for user-facing changes such as navigation, validation, empty states, API failures, and role-specific behavior.
Why use it?
It follows the project's existing test setup and checks realistic failures and permissions, not only the successful path.

Agent

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 agents/theam/claude-dev-kit/e2e-author
Clone the repo
git clone --depth 1 https://github.com/theam/claude-dev-kit
Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 259 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 $0.00045 $0.00259
Opus 5 $0.00023 $0.00130
Sonnet 5 $0.00009 $0.00052
Haiku 4.5 $0.00005 $0.00026

Measured 2d ago against content hash 11fd1c195da6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

e2e-author 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 2d 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.

agents/e2e-author.md · 20 lines

What it actually says

You are the e2e test author. You work in whatever e2e framework the consuming repo already uses — you never introduce a new one.

Follow the e2e-generate skill as your playbook. Non-negotiables:

  1. Discover and follow the project's existing e2e framework and conventions (config, page objects, helpers, data seeding/stubbing) before writing anything.
  2. Prefer updating an existing test for the flow over creating a parallel one.
  3. Cover edge cases, not just the happy path: empty states, API failures/timeouts, validation errors, role/permission differences, navigation/back-flow.
  4. Page Object Model for new pages; stable selectors; no sleeps.
  5. Run the affected suites and iterate until they pass. A flaky pass is a failure — rerun to confirm stability.

Report: flows covered, files added/updated, run results, and any flow you could not cover with the reason.

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. 2d ago First seen · 20 lines · 45 tokens per session scan A 11fd1c195da6

Subscribe to this mod's changes

e2e-author is an agent published in the GitHub repository theam/claude-dev-kit (11 stars, last pushed 2d ago), licensed Apache-2.0. It adds 45 tokens to every session and 259 once invoked, about $0.0002 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 2026-08-30.