An end-to-end testing specialist for checking complete user journeys in a web application, such as signing in and completing a purchase. It uses Vercel Agent Browser or Playwright to control a browser.

Use it to create, update, and run browser tests for important user flows, investigate flaky tests, and collect artifacts that help explain failures.

It helps find broken interactions across the whole application and keeps test evidence such as screenshots, videos, and traces organized. It also handles tests that fail inconsistently.

e2e-runner — Agent for Claude Code by joneqian

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/joneqian/claude-skills-suite

agentmods

npx agentmods add agents/joneqian/claude-skills-suite/e2e-runner

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/joneqian/claude-skills-suite/e2e-runner/github.svg)](https://agentmods.dev/agents/joneqian/claude-skills-suite/e2e-runner)

Your own site

<a href="https://agentmods.dev/agents/joneqian/claude-skills-suite/e2e-runner"><img src="https://agentmods.dev/badge/agents/joneqian/claude-skills-suite/e2e-runner/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/joneqian/claude-skills-suite/e2e-runner"><img src="https://agentmods.dev/badge/agents/joneqian/claude-skills-suite/e2e-runner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 69 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 5,557 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 95% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00069	$0.05557
Opus 5	$0.00034	$0.02779
Sonnet 5	$0.00014	$0.01111
Haiku 4.5	$0.00007	$0.00556

Measured 9d ago against content hash a7b61cb5dae4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

e2e-runner 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 9d 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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

import { execSync } from 'child_process'

Origin

This is a copy

95% identical to e2e-runner — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agents/e2e-runner.md · 798 lines

How it starts

The opening of the file, as written. The whole thing — 798 lines — stays where its author put it; the contents beside it link to each section on GitHub.

E2E Test Runner

You are an expert end-to-end testing specialist. Your mission is to ensure critical user journeys work correctly by creating, maintaining, and executing comprehensive E2E tests with proper artifact management and flaky test handling.

Primary Tool: Vercel Agent Browser

Prefer Agent Browser over raw Playwright - It's optimized for AI agents with semantic selectors and better handling of dynamic content.

Why Agent Browser?

Semantic selectors - Find elements by meaning, not brittle CSS/XPath
AI-optimized - Designed for LLM-driven browser automation
Auto-waiting - Intelligent waits for dynamic content
Built on Playwright - Full Playwright compatibility as fallback

Agent Browser Setup

# Install agent-browser globally
npm install -g agent-browser

# Install Chromium (required)
agent-browser install

Agent Browser CLI Usage (Primary)

Agent Browser uses a snapshot + refs system optimized for AI agents:

# Open a page and get a snapshot with interactive elements
agent-browser open https://example.com
agent-browser snapshot -i  # Returns elements with refs like [ref=e1]

# Interact using element references from snapshot
agent-browser click @e1                      # Click element by ref
agent-browser fill @e2 "[email protected]"   # Fill input by ref
agent-browser fill @e3 "password123"        # Fill password field
agent-browser click @e4                      # Click submit button

# Wait for conditions
agent-browser wait visible @e5               # Wait for element
agent-browser wait navigation                # Wait for page load

# Take screenshots
agent-browser screenshot after-login.png

# Get text content
agent-browser get text @e1

Agent Browser in Scripts

For programmatic control, use the CLI via shell commands:

import { execSync } from 'child_process'

// Execute agent-browser commands
const snapshot = execSync('agent-browser snapshot -i --json').toString()
const elements = JSON.parse(snapshot)

// Find element ref and interact
execSync('agent-browser click @e1')
execSync('agent-browser fill @e2 "[email protected]"')

Read the full file on GitHub · 798 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.

9d ago First seen · 798 lines · 69 tokens per session scan A a7b61cb5dae4

Subscribe to this mod's changes

e2e-runner is an agent published in the GitHub repository joneqian/claude-skills-suite (32 stars, last pushed 7mo ago), licensed MIT. It adds 69 tokens to every session and 5,557 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). It is 95% identical to e2e-runner, differing in 6 lines, and is treated as a copy.

E2E testing Testing

integration-testing-orchestrator

Use this agent when you need to coordinate end-to-end testing across multiple components, optimize build systems, validate deployments, or ensure proper integration between eBPF programs, Rust collector, and frontend components. Examples: Context: User has made changes to both eBPF programs and Rust collector and…

eunomia-bpf/agentsight · 0 tokens

test-engineer

Expert in testing, TDD, and test automation. Use for writing tests, improving coverage, debugging test failures. Triggers on test, spec, coverage, jest, pytest, playwright, e2e, unit test.

ashrafmusa/agenticana · 49 tokens

e2e-tester

Use for end-to-end and smoke testing of critical user paths across viewports. Pairs with a browser-automation MCP (for example Playwright) when one is available.

mnzralee/claude-multi-agent-architecture · 41 tokens

qa-tester

Use when the task is a verifiable browser interaction with a binary pass/fail outcome — login flow, submit form, attach file, verify message appears. Returns a verdict + evidence. Do NOT use for tasks needing user decisions mid-flow (region selection, domain pick, etc.).

DevZonayed/Mochi · 60 tokens

visual-diagram-verifier

Use this agent when the architecture-designer:design or architecture-designer:review skill has opened the browser preview (Step 8 / step 4d) and wants to check whether diagrams actually render without visually overlapping elements — a real, rendered-geometry check using the chrome-devtools-mcp or firefox-devtools-mcp…

sembraniteam/claude-plugins · 112 tokens

qa-engineer

Converts Excel test case reports into verified Playwright E2E scripts with real selectors.

odarino/haren · 21 tokens

e2e-runner