What is maestro-capture?

A tool for capturing screens from an iOS Simulator after navigating through a mobile app with Maestro flows. It can also compare the captured screen with a prototype image.

Use it to capture a named app section, navigate through Expo Go when needed, and compare the result with a design reference.

It makes it easier to check whether the running app matches the intended mobile design. It also detects basic setup problems, such as a simulator or app that is not ready.

maestro-capture — Skill for Claude Code by parisgroup-ai

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.

Any agent

npx skills add parisgroup-ai/imersao-ia-setup --skill maestro-capture

Clone the repo

git clone --depth 1 https://github.com/parisgroup-ai/imersao-ia-setup

Made for: Claude Code.

Or install imersao, the plugin that ships this one along with the rest of its 51 skills, 7 commands.

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/skills/parisgroup-ai/imersao-ia-setup/maestro-capture/github.svg)](https://agentmods.dev/skills/parisgroup-ai/imersao-ia-setup/maestro-capture)

Your own site

<a href="https://agentmods.dev/skills/parisgroup-ai/imersao-ia-setup/maestro-capture"><img src="https://agentmods.dev/badge/skills/parisgroup-ai/imersao-ia-setup/maestro-capture/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/skills/parisgroup-ai/imersao-ia-setup/maestro-capture"><img src="https://agentmods.dev/badge/skills/parisgroup-ai/imersao-ia-setup/maestro-capture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 567 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.

Model	Per session	Once invoked
Fable 5.1	$0.00063	$0.00567
Opus 5	$0.00032	$0.00283
Sonnet 5	$0.00013	$0.00113
Haiku 4.5	$0.00006	$0.00057

Measured 11d ago against content hash 03b424639c95, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

maestro-capture 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 11d 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/imersao/skills/maestro-capture/SKILL.md · 65 lines

What it actually says

Maestro Capture

Capture screenshots from the iOS Simulator after navigating via Maestro flows, then compare with design prototypes.

Usage

/maestro-capture <section> [--compare]

section: Screen name to capture (e.g., settings, launch, inbox)
--compare: Also read the prototype PNG and show side-by-side analysis

Steps

Check simulator is booted:
```
xcrun simctl list devices booted
```
If no device is booted, tell the user to start the simulator.
Check if app is running: Take a quick screenshot to see the current state.
```
xcrun simctl io booted screenshot /tmp/maestro-capture-check.png
```
Read the screenshot to determine if the app is on screen or if Expo Go home is showing.
Navigate to the target screen:
- If on Expo Go home: create a temp Maestro YAML to tap "AsyncMe Mobile" and navigate
- Write a temp YAML flow at /tmp/maestro-capture-nav.yaml that:
  - Launches host.exp.Exponent
  - Taps into the app if needed
  - Navigates to the target screen via bottom tab
- Run: maestro test /tmp/maestro-capture-nav.yaml

Capture screenshot:

xcrun simctl io booted screenshot <project-root>/compare-<section>.png

Read and display the captured screenshot using the Read tool.
If --compare flag:
- Look for prototype at design/sections/<section>/<section>-view-native.png
- Read both images
- Provide a structured gap analysis:
  - Layout differences
  - Missing elements
  - Style mismatches
  - What's aligned

Notes

Always use host.exp.Exponent as the Maestro appId (Expo Go)
Bottom tab labels are in English: Launch, Inbox, Processes, Projects, Settings
Inner content uses the device locale (Portuguese on PT devices)
Maestro tapOn works with visible text labels
For scrolling to off-screen elements use scrollUntilVisible
Clean up temp YAML files after use

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.

11d ago First seen · 65 lines · 63 tokens per session scan A 03b424639c95

Subscribe to this mod's changes

maestro-capture is a skill published in the GitHub repository parisgroup-ai/imersao-ia-setup (1 stars, last pushed 29d ago), licensed MIT. It adds 63 tokens to every session and 567 once invoked, about $0.0003 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 2026-08-31.

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