What is overlay-apps?

A framework for Sutando desktop overlays: frameless windows that stay above other applications and can float over the desktop. It includes one system-resources example.

Building or running floating Sutando panels, placing them on different monitors, and controlling them from the web interface's overlays manager.

It provides shared controls for opening, hiding, positioning, dimming, and changing the opacity of overlays instead of implementing those behaviors for every window.

overlay-apps — Skill for Claude Code and Codex by sonichi: A framework for Sutando desktop overlays: frameless windows that…

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.

agentmods

npx agentmods add skills/sonichi/sutando/overlay-apps

Any agent

npx skills add sonichi/sutando --skill overlay-apps

Clone the repo

git clone --depth 1 https://github.com/sonichi/sutando

Made for: Claude Code, Codex.

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/sonichi/sutando/overlay-apps.svg)](https://agentmods.dev/skills/sonichi/sutando/overlay-apps)

Your own site

<a href="https://agentmods.dev/skills/sonichi/sutando/overlay-apps"><img src="https://agentmods.dev/badge/skills/sonichi/sutando/overlay-apps.svg" alt="Measured on agentmods" height="20"></a>

Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 963 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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	$0.00062	$0.00963
Opus 5	$0.00031	$0.00481
Sonnet 5	$0.00012	$0.00193
Haiku 4.5	$0.00006	$0.00096

Measured 4d ago against content hash ce24b81d5e34, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

overlay-apps 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 4d ago.

The scan reads SKILL.md. This mod also ships 6 executable files (app/control-server.js, app/main.js, app/preload.js, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/overlay-apps/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Overlay Apps

A small framework for Sutando desktop overlays: always-on-top, frameless, transparent Electron windows that float over whatever you're working on, controllable from the web UI's /overlays manager view.

The framework gives you, for free:

A localhost control server the web UI manager talks to (open / close / show / hide / opacity / always-on-top).
Multi-display placement — move every overlay to a chosen monitor; the choice persists across restarts.
Auto-dim on app blur — overlays fade to ~20% opacity when you click into another app, restore to their configured opacity when you click an overlay back.
A simple OVERLAYS registry — add a new overlay by registering it.

When to use

Building or running a Sutando desktop overlay — an always-on-top, frameless floating window controllable from the web UI /overlays manager. Use this framework (register in the OVERLAYS registry) rather than hand-rolling an Electron window. Not for normal app windows or the menu-bar app.

Done & failure modes

Done = the overlay appears always-on-top and the /overlays manager can open/close/show/hide/opacity it; placement persists across restarts.
Control server port already in use → another overlay-apps instance is running; stop it first.
Overlay invisible → check it was registered in app/main.js OVERLAYS and that scripts/launch.sh synced source → workspace + installed deps.

Ships with

One example overlay: System Resources — live CPU / memory / disk / network / load (Cmd+Shift+S). The framework is overlay-agnostic; the example is just a working starting point.

Layout — workspace contract

Source of truth: skills/overlay-apps/app/ (in the repo).
Running instance: <workspace>/overlay-apps/benchmark-overlay/ — node_modules and any local state live here, not in the repo. Code in the repo, mutable runtime in the workspace, per the Sutando workspace contract. <workspace> resolves via bash scripts/sutando-config.sh workspace (M0 helper, PR #1395) — defaults to <repo>/workspace/.

Read the full file on GitHub · 94 lines

Files

What ships with it

12 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

4d ago First seen · 94 lines · 62 tokens per session scan A ce24b81d5e34

Subscribe to this mod's changes

overlay-apps is a skill published in the GitHub repository sonichi/sutando (391 stars, last pushed today), licensed MIT. It adds 62 tokens to every session and 963 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 2026-08-30.

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