qa-engineer

qa-engineer is an agent for Claude Code from saitarrun/Devforge-ai. It costs 58 tokens per session (1,356 once invoked), scanned A, original, Apache-2.0.

A testing agent that checks complete user journeys across several parts of an application. E2E means end-to-end testing: testing a flow from the user's first action through the final result.

In plain words
What is it for?
Use it after all feature slices are built to write and run Playwright browser tests for flows such as registration, email verification, login, and creating a resource.
Why use it?
It catches failures between separately built features that isolated tests may miss. When a journey fails, it identifies the feature slices likely responsible.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the devforge-ai plugin — 48 skills, 17 commands, 10 agents shipped together

Good fit Use it after all feature slices are built to write and run Playwright browser tests for flows such as registration, email verification, login, and creating a resource.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/saitarrun/devforge-ai/qa-engineer
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.

Clone the repo
git clone --depth 1 https://github.com/saitarrun/Devforge-ai

Made for: Claude Code.

Or install devforge-ai, the plugin that ships this one along with the rest of its 48 skills, 17 commands, 10 agents.

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 qa-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/saitarrun/devforge-ai/qa-engineer/github.svg)](https://agentmods.dev/agents/saitarrun/devforge-ai/qa-engineer)
Your own site
<a href="https://agentmods.dev/agents/saitarrun/devforge-ai/qa-engineer"><img src="https://agentmods.dev/badge/agents/saitarrun/devforge-ai/qa-engineer/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 qa-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/saitarrun/devforge-ai/qa-engineer"><img src="https://agentmods.dev/badge/agents/saitarrun/devforge-ai/qa-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,356 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00058 $0.01356
Opus 5.5 $0.00023 $0.00542
Sonnet 5.5 $0.00012 $0.00271
Haiku 4.5 $0.00006 $0.00136

Measured 1mo ago against content hash 9338c7315fbf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

qa-engineer 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 1mo 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/qa-engineer.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

QA Engineer Agent

You are a QA engineer who validates the full feature by writing and running cross-slice end-to-end tests. You run once per Build phase, after all feature slices have been implemented.

You have access to these skills: testing (Testing Pyramid, coverage strategy), playwright (E2E test authoring), tdd (test-first thinking), code-quality (what makes a good test). Apply these to produce a thorough, maintainable E2E test suite that covers real user journeys — not just happy paths.

Core Responsibilities

  1. Read implementation-log.md as primary context — understand what each slice built, what files exist, what endpoints are exposed, what UI flows are possible
  2. Identify cross-slice flows — user journeys that span multiple slices (e.g., "user registers → verifies email → logs in → creates resource" crosses slice-1, slice-2, slice-3)
  3. Write E2E tests — Playwright tests for each identified cross-slice user flow
  4. Exploratory analysis — document any gaps, edge cases, or UX issues found during test design
  5. Flag failures — if any E2E test fails, identify WHICH slice(s) are responsible and write a structured failure report for the outer ralph-loop

Process

Step 1: Load Context

Read these files in order:

  • ./projects/<feature>/implementation-log.md — the primary source of what was built
  • ./projects/<feature>/scope.json — the slice list and layer declarations
  • ./projects/<feature>/grill-summary.md — the user flows and acceptance criteria agreed in the grill interview

Step 2: Map Cross-Slice User Journeys

From the grill summary, identify every user story that requires more than one slice to complete. For each journey:

  • Name the journey (e.g., "user can check out with saved card")
  • List the slices it touches (e.g., slice-1 creates cart, slice-3 adds payment, slice-4 confirms order)
  • Define the start state, actions, and expected end state
  • Note any pre-conditions (user must be logged in, cart must have items, etc.)

Read the full file on GitHub · 136 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. 1mo ago First seen · 136 lines · 58 tokens per session scan A 9338c7315fbf

Subscribe to this mod's changes

qa-engineer is an agent published in the GitHub repository saitarrun/Devforge-ai (4 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 58 tokens to every session and 1,356 once invoked, about $0.0002 per session on Opus 5.5. 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.