lotti: Skill for Claude Code

.claude/skills/app-screenshots/SKILL.md

app-screenshots is a skill for Claude Code from matthiasn/lotti. It costs 66 tokens per session (1,734 once invoked), scanned C, original, GPL-3.0.

A screenshot tool for capturing an app widget or user flow at phone and desktop sizes. It works offline with fixed results, real fonts, and real icons.

In plain words
What is it for?
Use it to show an app screen, capture a flow, or preview a UI change for review.
Why use it?
It gives reviewers a consistent way to see how a screen or change looks on different screen sizes.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

This is matthiasn/lotti's own configuration. It tells Claude Code how to work on lotti itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything lotti configures →

About the project

Lotti is a private logbook that stores tasks, time records, notes, habits, and health data on a person's devices, with personal AI assistants that summarize records and suggest changes for approval. It is for people who want to track intended and completed work while keeping synchronized data end-to-end encrypted. The catalogue add-ons provide agents, skills, and instructions for working with Lotti.

matthiasn/lotti · 1,171 stars · on GitHub · matthiasn.github.io

Reuse

Borrowing it

Nothing to install: this file belongs to matthiasn/lotti. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/matthiasn/lotti/main/.claude/skills/app-screenshots/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/matthiasn/lotti

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 app-screenshots

README.md
[![agentmods](https://agentmods.dev/badge/skills/matthiasn/lotti/app-screenshots/github.svg)](https://agentmods.dev/skills/matthiasn/lotti/app-screenshots)
Your own site
<a href="https://agentmods.dev/skills/matthiasn/lotti/app-screenshots"><img src="https://agentmods.dev/badge/skills/matthiasn/lotti/app-screenshots/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 app-screenshots

Your own site · 80×15
<a href="https://agentmods.dev/skills/matthiasn/lotti/app-screenshots"><img src="https://agentmods.dev/badge/skills/matthiasn/lotti/app-screenshots.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,734 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00066 $0.01734
Opus 5 $0.00033 $0.00867
Sonnet 5 $0.00013 $0.00347
Haiku 4.5 $0.00007 $0.00173

Measured 9d ago against content hash 721c14960f4a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade C, and why

app-screenshots scanned grade C with 1 finding 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 9d 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

rm test/_scratch_capture_test.dart && rm -rf test/screenshots
.claude/skills/app-screenshots/SKILL.md · 184 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 9d ago First seen · 184 lines · 66 tokens per session scan C 721c14960f4a

Subscribe to this mod's changes

app-screenshots is a skill published in the GitHub repository matthiasn/lotti (1,171 stars, last pushed yesterday), licensed GPL-3.0. It adds 66 tokens to every session and 1,734 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories