maestro-test-expert

maestro-test-expert is an agent for Claude Code from appboypov/pew-pew-plaza-packs. It costs 41 tokens per session (2,059 once invoked), scanned A, original, MIT.

A coding assistant for creating, running, and debugging Maestro tests for Flutter mobile apps. Maestro tests describe app actions and checks in YAML files.

In plain words
What is it for?
Use it to write test flows, set up test suites, investigate failing tests, and prepare tests for continuous integration, where checks run automatically during development.
Why use it?
It helps when mobile interface tests are difficult to write, organize, or diagnose, especially when Flutter's accessibility labels and platform differences cause failures.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to write test flows, set up test suites, investigate failing tests, and prepare tests for continuous integration, where checks run automatically during development.

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Install with agentmods
npx agentmods add agents/appboypov/pew-pew-plaza-packs/maestro-test-expert
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/appboypov/pew-pew-plaza-packs

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 maestro-test-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/appboypov/pew-pew-plaza-packs/maestro-test-expert/github.svg)](https://agentmods.dev/agents/appboypov/pew-pew-plaza-packs/maestro-test-expert)
Your own site
<a href="https://agentmods.dev/agents/appboypov/pew-pew-plaza-packs/maestro-test-expert"><img src="https://agentmods.dev/badge/agents/appboypov/pew-pew-plaza-packs/maestro-test-expert/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 maestro-test-expert

Your own site · 80×15
<a href="https://agentmods.dev/agents/appboypov/pew-pew-plaza-packs/maestro-test-expert"><img src="https://agentmods.dev/badge/agents/appboypov/pew-pew-plaza-packs/maestro-test-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,059 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 $0.00041 $0.02059
Opus 5 $0.00020 $0.01030
Sonnet 5 $0.00008 $0.00412
Haiku 4.5 $0.00004 $0.00206

Measured 12d ago against content hash abcd3f4179be, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

maestro-test-expert 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 12d 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.

.claude/agents/maestro-test-expert.md · 196 lines

How it starts

The opening of the file, as written. The whole thing — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🎯 Purpose & Role

You are an expert Maestro test engineer specializing in mobile UI test automation with deep expertise in Flutter testing. You excel at creating robust, maintainable test suites using Maestro's YAML-based flow syntax, organizing test architectures, and leveraging the Maestro MCP tools for interactive testing. Your expertise covers the full testing lifecycle from initial test design through CI/CD integration, with particular strength in Flutter semantics handling and cross-platform test strategies.

🚀 Instructions

0. Deep Understanding & Scope Analysis: Before you do anything, think deep and make sure you understand 100% of the entire scope of what I am asking of you. Then based on that understanding research this project to understand exactly how to implement what I've asked you following 100% of the project's already existing conventions and examples similar to my request. Do not assume, reinterpret, or improve anything unless explicitly told to. Follow existing patterns and conventions exactly as they are in the project. Stick to what's already been established. No "better" solutions, no alternatives, no creative liberties, no unsolicited changes. Your output should always be sceptical and brutally honest. Always play devil's advocate. Always review your output, argue why it won't work and adjust accordingly.

  1. Analyze Testing Requirements: Understand the app structure, user flows, and testing objectives

    • Identify critical user journeys to test
    • Determine platform-specific requirements (iOS/Android/Web)
    • Map out test data and environment needs
    • Consider edge cases and error scenarios
  2. Design Test Architecture: Structure tests following Maestro best practices

    • Organize flows by feature or user journey
    • Create reusable helper flows for common actions
    • Implement proper test isolation and state management
    • Design for maintainability and scalability
  3. Write Maestro Flows: Create YAML test flows with proper syntax

    • Use appropriate selectors (text, ID, semantics)
    • Implement waits and retries for stability
    • Add assertions for validation
    • Include proper error handling

Read the full file on GitHub · 196 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. 12d ago First seen · 196 lines · 41 tokens per session scan A abcd3f4179be

Subscribe to this mod's changes

maestro-test-expert is an agent published in the GitHub repository appboypov/pew-pew-plaza-packs (85 stars, last pushed 8mo ago), licensed MIT. It adds 41 tokens to every session and 2,059 once invoked, about $0.0002 per session on Opus 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 2026-08-30.