e2e-flow-verifier

e2e-flow-verifier is a skill for Claude Code from proffesor-for-testing/agentic-qe. It costs 45 tokens per session (1,176 once invoked), scanned A, original, MIT.

A browser-based verifier for complete user journeys, such as logging in and reaching a dashboard. It checks the application's state at each step and saves screenshots and page-structure snapshots as evidence.

In plain words
What is it for?
Use it to verify real browser flows with form entry, clicks, page changes, URL checks, and visible-element assertions.
Why use it?
It helps catch failures that only appear across a sequence of actions rather than in one isolated check. The saved evidence makes the result easier to inspect or share.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: reads .claude/ paths.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node .claude/skills/qe-browser/scripts/batch.js --steps "@/tmp/{{flow-name}}.json".

Part of the agentic-qe plugin — 41 skills, 143 commands, 10 agents, 10 hooks, 1 plugin shipped together

Good fit Use it to verify real browser flows with form entry, clicks, page changes, URL checks, and visible-element assertions.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/proffesor-for-testing/agentic-qe
agentmods
npx agentmods add skills/proffesor-for-testing/agentic-qe/e2e-flow-verifier

Made for: Claude Code.

Or install agentic-qe, the plugin that ships this one along with the rest of its 41 skills, 143 commands, 10 agents, 10 hooks, 1 plugin.

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-flow-verifier

README.md
[![agentmods](https://agentmods.dev/badge/skills/proffesor-for-testing/agentic-qe/e2e-flow-verifier/github.svg)](https://agentmods.dev/skills/proffesor-for-testing/agentic-qe/e2e-flow-verifier)
Your own site
<a href="https://agentmods.dev/skills/proffesor-for-testing/agentic-qe/e2e-flow-verifier"><img src="https://agentmods.dev/badge/skills/proffesor-for-testing/agentic-qe/e2e-flow-verifier/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 e2e-flow-verifier

Your own site · 80×15
<a href="https://agentmods.dev/skills/proffesor-for-testing/agentic-qe/e2e-flow-verifier"><img src="https://agentmods.dev/badge/skills/proffesor-for-testing/agentic-qe/e2e-flow-verifier.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,176 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00045 $0.01176
Opus 5.5 $0.00018 $0.00470
Sonnet 5.5 $0.00009 $0.00235
Haiku 4.5 $0.00005 $0.00118

Measured 5d ago against content hash f72c80e8e0f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

e2e-flow-verifier scanned grade A with 1 finding 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 5d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

For API calls that don't originate from the page, run the API check in a separate step (`curl` + `jq`, or a dedicated API test skill).
.claude/skills/e2e-flow-verifier/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

E2E Flow Verifier

Product verification skill that drives user flows with the qe-browser fleet skill (Vibium engine), asserts state at each step, and records evidence as a ZIP of screenshots + DOM snapshots.

Activation

/e2e-flow-verifier [flow-name]

Dependency

This skill uses .claude/skills/qe-browser/ for all browser automation. The vibium binary is installed automatically by aqe init. See qe-browser/SKILL.md for the full command reference.

Flow Verification Pattern (qe-browser + batch + assert)

Define the flow as a JSON batch plan and drive it with the qe-browser batch runner:

# flows/{{flow-name}}.json
cat > /tmp/{{flow-name}}.json <<'EOF'
[
  {"action": "go",      "url": "{{base_url}}"},
  {"action": "wait_load"},
  {"action": "fill",    "selector": "[data-testid=email]",    "text": "{{test_user}}"},
  {"action": "fill",    "selector": "[data-testid=password]", "text": "{{test_password}}"},
  {"action": "click",   "selector": "[data-testid=login-btn]"},
  {"action": "wait_url","pattern": "/dashboard"},
  {"action": "assert",  "checks": [
    {"kind": "url_contains",    "text": "/dashboard"},
    {"kind": "selector_visible","selector": "[data-testid=dashboard]"},
    {"kind": "no_console_errors"},
    {"kind": "no_failed_requests"}
  ]},
  {"action": "click",   "selector": "[data-testid={{action_element}}]"},
  {"action": "assert",  "checks": [
    {"kind": "text_visible", "text": "{{expected_text}}"}
  ]}
]
EOF

# Record evidence AND drive the flow
vibium record start --screenshots --snapshots --name "{{flow-name}}"
node .claude/skills/qe-browser/scripts/batch.js --steps "@/tmp/{{flow-name}}.json"
FLOW_EXIT=$?
vibium record stop -o "test-results/{{flow-name}}/evidence.zip"
exit $FLOW_EXIT

The batch runner exits non-zero if any step fails, so CI gates work with a plain $? check.

Evidence Collection

After each flow verification, vibium record produces a ZIP containing:

  1. Screenshots — one per action + annotated failure shots
  2. DOM snapshots — before/after each interaction
  3. Timeline — ordered event log with URLs and timings
  4. Console/network logs — captured inline

Read the full file on GitHub · 114 lines

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. 5d ago First seen · 114 lines · 45 tokens per session scan A f72c80e8e0f7

Subscribe to this mod's changes

e2e-flow-verifier is a skill published in the GitHub repository proffesor-for-testing/agentic-qe (504 stars, last pushed today), licensed MIT. It adds 45 tokens to every session and 1,176 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-11.

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