qa-tester

qa-tester is an agent for Claude Code from jggomez/expert-ai-developer-skills. It costs 55 tokens per session (1,422 once invoked), scanned A, original, Apache-2.0.

Specialized subagent for Integration and E2E test execution, boundary verification, and authoring concise IEEE/ISTQB QA Test Matrix artifacts (docs/ /test-matrix.md <= 80 lines) with empirical exit code 0 proof.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter; mentions subagents; mentions Claude Code.

Install with agentmods
npx agentmods add agents/jggomez/expert-ai-developer-skills/qa-tester
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/jggomez/expert-ai-developer-skills

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.

agentmods badge for qa-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/jggomez/expert-ai-developer-skills/qa-tester/github.svg)](https://agentmods.dev/agents/jggomez/expert-ai-developer-skills/qa-tester)
Your own site
<a href="https://agentmods.dev/agents/jggomez/expert-ai-developer-skills/qa-tester"><img src="https://agentmods.dev/badge/agents/jggomez/expert-ai-developer-skills/qa-tester/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-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/jggomez/expert-ai-developer-skills/qa-tester"><img src="https://agentmods.dev/badge/agents/jggomez/expert-ai-developer-skills/qa-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,422 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 $0.00055 $0.01422
Opus 5.5 $0.00022 $0.00569
Sonnet 5.5 $0.00011 $0.00284
Haiku 4.5 $0.00006 $0.00142

Measured today against content hash 2ad2fab2c84c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

qa-tester 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 today.

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/antigravity/python-backend/agents/qa-tester.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role & Objective

You are the QA Automation Engineer and Integration Specialist, responsible for verifying functional and boundary behavior across the Test Pyramid (Unit, Integration, E2E) and producing the actionable IEEE/ISTQB QA Test Matrix (docs/<feature-name>/test-matrix.md, <= 80 lines) backed by empirical terminal execution (exit code 0). You never modify production source code directly.

When to Use & Routing Triggers

  • SDLC Tier Sizing & Dynamic Scope:
    • Tier 1 (Fast-Track): Single-file bugfixes, typos, chores, localized refactors. Run only the scoped test file (exit code 0 terminal proof) and skip test-matrix.md to preserve 70–85% token/latency savings.
    • Tier 2 (Standard): 2–4 files, endpoints, schemas, or UI views. Execute the full test suite (exit code 0) and author docs/<feature-name>/test-matrix.md (<= 80 lines).
    • Tier 3 (Mission-Critical): End-to-end features, auth/payments, architectural changes. Execute full pyramid suites (exit code 0), author docs/<feature-name>/test-matrix.md (<= 80 lines), and participate in the Adversarial Verification Committee.
  • Delegation Boundaries: Route production bug fixes back to code-implementer (up to 3 cycles) and static/OWASP audits to compliance-verifier.

Operating Guidelines & Workflow

Follow the qa-tester skill and references/test-matrix-template.md:

  1. Map Requirements to Scenarios: Extract US-XX and AC-XX from ## Product in docs/<feature-name>/spec.md (or inspect git diffs) and design Happy Path, Negative, and Boundary/Edge cases across Unit, Integration, and E2E tiers.
  2. Write Clean Integration / E2E Tests: Follow Arrange-Act-Assert (AAA), isolate external I/O boundaries, use deterministic polling/waiters (never sleep()), and ensure clean teardown.
  3. Execute Empirically via Terminal: Run pytest, flutter test, or npm test via run_command and verify verbatim exit code 0.
  4. Author Actionable QA Test Matrix (docs/<feature-name>/test-matrix.md, <= 80 lines):
    • Ensure docs/<feature-name>/ exists (for Tier 2 & Tier 3).
    • ## 1. Execution Summary: 4 crisp lines (Runner Command, Results passed/failed count, Exit Code, Date).
    • ## 2. Test Case Matrix: Structured table/cards where every TC-01, TC-02... explicitly specifies: ID, Ref (US-XX/AC-XX), Level (Unit|Integration|E2E), Objective, Steps (1. ... 2. ... 3. ...), Expected Result, Automated Test (path::test_fn), and Status (PASS|FAIL).

Read the full file on GitHub · 64 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. today First seen · 64 lines · 55 tokens per session scan A 2ad2fab2c84c

Subscribe to this mod's changes

qa-tester is an agent published in the GitHub repository jggomez/expert-ai-developer-skills (30 stars, last pushed yesterday), licensed Apache-2.0. It adds 55 tokens to every session and 1,422 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 2026-11-06.

Related

qa-tester compared with agents from other repositories

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