e2e-verify

e2e-verify is a skill for Claude Code, Codex from gopherguides/gopher-ai. It costs 69 tokens per session (8,806 once invoked), scanned A, original, MIT.

A browser-based end-to-end testing workflow for checking a pull request or user-interface change. End-to-end testing follows a feature through the application as a user would, including what appears on screen.

In plain words
What is it for?
Use it before merging to test browser flows, inspect screenshots, check console errors and network requests, and verify the result against the requested change.
Why use it?
It catches visible layout or behavior problems that code checks alone may miss.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the go-workflow plugin — 11 skills, 3 commands, 4 agents, 4 hooks shipped together

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 skills/gopherguides/gopher-ai/e2e-verify
Any agent
npx skills add gopherguides/gopher-ai --skill e2e-verify
Clone the repo
git clone --depth 1 https://github.com/gopherguides/gopher-ai

Made for: Claude Code, Codex.

Or install go-workflow, the plugin that ships this one along with the rest of its 11 skills, 3 commands, 4 agents, 4 hooks.

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 e2e-verify

README.md
[![agentmods](https://agentmods.dev/badge/skills/gopherguides/gopher-ai/e2e-verify.svg)](https://agentmods.dev/skills/gopherguides/gopher-ai/e2e-verify)
Your own site
<a href="https://agentmods.dev/skills/gopherguides/gopher-ai/e2e-verify"><img src="https://agentmods.dev/badge/skills/gopherguides/gopher-ai/e2e-verify.svg" alt="Measured on agentmods" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,806 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 $0.00069 $0.08806
Opus 5 $0.00034 $0.04403
Sonnet 5 $0.00014 $0.01761
Haiku 4.5 $0.00007 $0.00881

Measured yesterday against content hash 94091e8517bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

e2e-verify 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.

plugins/go-workflow/skills/e2e-verify/SKILL.md · 758 lines

How it starts

The opening of the file, as written. The whole thing — 758 lines — stays where its author put it; the contents beside it link to each section on GitHub.

E2E Verify

Plugin Resource Resolution

<PLUGIN_ROOT> is notation. Replace it with a concrete absolute plugin root before every resource read or command:

  • Codex: Start from the directory containing the absolute selected SKILL.md path, then ascend two directories (skills/<name> -> plugin root).
  • Claude Code: Bind it to the injected ${CLAUDE_PLUGIN_ROOT} value.

Before requesting decisions or delegating work, read <PLUGIN_ROOT>/lib/driver-interaction.md and follow its cross-platform capability-binding rules.

Read <PLUGIN_ROOT>/lib/decision-gates.md before resolving a missing target or other workflow choice.

Bind the invocation arguments as SKILL_ARGS for $go-workflow:e2e-verify by reading <PLUGIN_ROOT>/lib/skill-arguments.md with this Claude Code compatibility payload: $ARGUMENTS

source "<PLUGIN_ROOT>/lib/github-rest.sh"

Core Principle: Visual Verification is Non-Negotiable

Every screenshot you take MUST be read and visually inspected. Taking a screenshot without reading it is useless. The entire point of E2E testing is to verify what the USER sees, not just what the DOM contains.

After every mcp__chrome-devtools-mcp__take_screenshot, you MUST:

  1. Read the screenshot using your multimodal vision capabilities
  2. Compare it to the spec — read the issue/PR description and verify the screenshot matches what was requested
  3. Describe what you see — document the visual state in your results (layout, content, styling, errors)
  4. Flag discrepancies — if what you see doesn't match the spec, report it as a finding

DOM checks (console errors, network requests) supplement visual verification — they do NOT replace it. A page can have zero console errors and zero network failures but still look completely wrong.


Parse Arguments

Extract PR number and mode from SKILL_ARGS:

MODE="verify"
PR_ARG=""
for arg in $SKILL_ARGS; do
  case "$arg" in
    verify|fix-and-verify|investigate|ship-prep|ship|fix-and-ship) MODE="$arg" ;;
    *) if echo "$arg" | grep -qE '^[0-9]+$'; then PR_ARG="$arg"; fi ;;
  esac
done
echo "MODE=$MODE PR_ARG=$PR_ARG"

Read the full file on GitHub · 758 lines

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 Changed · +13 lines 94091e8517bb
  2. 5d ago First seen · 745 lines · 69 tokens per session scan A 9708d6955ba1

Subscribe to this mod's changes

e2e-verify is a skill published in the GitHub repository gopherguides/gopher-ai (21 stars, last pushed yesterday), licensed MIT. It adds 69 tokens to every session and 8,806 once invoked, about $0.0003 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.