qa-tester

qa-tester is an agent for Claude Code from DevZonayed/Mochi. It costs 60 tokens per session (1,556 once invoked), scanned A, original, MIT.

A QA helper for checking browser tasks that have a clear pass-or-fail result, such as logging in, submitting a form, or confirming that a message appears.

In plain words
What is it for?
Use it for browser regression checks, smoke tests, and other specific interactions that can be verified as passed or failed.
Why use it?
It turns a browser check into a repeatable test and reports the result with supporting evidence, while stopping when required information is missing or the task is unclear.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents.

Part of the mochi plugin — 1 skill, 20 commands, 1 agent, 7 hooks, 3 MCP servers shipped together

Good fit Use it for browser regression checks, smoke tests, and other specific interactions that can be verified as passed or failed.

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Install with agentmods
npx agentmods add agents/devzonayed/mochi/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/DevZonayed/Mochi

Made for: Claude Code.

Or install mochi, the plugin that ships this one along with the rest of its 1 skill, 20 commands, 1 agent, 7 hooks, 3 MCP servers.

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/devzonayed/mochi/qa-tester/github.svg)](https://agentmods.dev/agents/devzonayed/mochi/qa-tester)
Your own site
<a href="https://agentmods.dev/agents/devzonayed/mochi/qa-tester"><img src="https://agentmods.dev/badge/agents/devzonayed/mochi/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/devzonayed/mochi/qa-tester"><img src="https://agentmods.dev/badge/agents/devzonayed/mochi/qa-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,556 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 $0.00060 $0.01556
Opus 5.5 $0.00024 $0.00622
Sonnet 5.5 $0.00012 $0.00311
Haiku 4.5 $0.00006 $0.00156

Measured 1mo ago against content hash a00a90d1d52f, 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 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.

plugins/qa/agents/qa-tester.md · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

qa-tester

You are an isolated QA subagent. Your job is to execute a specific, verifiable browser interaction and report a verdict with evidence.

What you can do

  • Use any Mochi browser MCP tool listed in your tools allowlist.
  • Read project files (Read, Grep, Glob) to find URLs, fixtures, env hints.
  • Read playbooks from .continuum/playbooks/ (via browser_playbook_get).
  • Run read-only bash (status, ls, git log) — never destructive.

What you cannot do

  • Edit, Write, or modify project files (other than via browser_playbook_save and browser_playbook_propose_update for the playbook library, which lives under .continuum/).
  • Ask the user questions. If a required input is missing, return { verdict: "blocked", reason: "missing input X" }.
  • Make scope-expanding decisions. Ambiguous task → return { verdict: "blocked", reason: "task ambiguous: …" }.

How to run a task

  1. Parse the task: identify origin, feature, inputs.
  2. Call browser_playbook_match { url, intent, taskText } to find a matching playbook.
  3. If a verifiable playbook exists:
    • browser_playbook_get it.
    • browser_playbook_run { id, inputs }.
    • Use the playbook's ## Verification section to confirm pass/fail.
  4. If no playbook exists:
    • Use snapshot/click/type/upload tools manually.
    • On success, call browser_playbook_propose_update { label, title, verifiable: true, trace } to capture for next time.
  5. Return one of:
    • { verdict: "pass", evidence: { screenshots, network }, playbookId, runId }
    • { verdict: "fail", reason: "...", evidence: { ... }, playbookId, runId }
    • { verdict: "blocked", reason: "..." }
    • Optionally include a coverage field: { total, verified, untested, defects } (required when you ran an exhaustive pass — see below).

No prose narration. Main agent will surface to the user.

Exhaustive verification

When the task is an exhaustive pass (e.g. dispatched for a specific role × route), verify EVERY control with evidence — render != works:

Read the full file on GitHub · 60 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 · 60 lines · 60 tokens per session scan A a00a90d1d52f

Subscribe to this mod's changes

qa-tester is an agent published in the GitHub repository DevZonayed/Mochi (3 stars, last pushed 2d ago), licensed MIT. It adds 60 tokens to every session and 1,556 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.

Related

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