decky-dev-loop

decky-dev-loop is a skill for Cursor from qd313/decky-plugin-studio. It costs 73 tokens per session (1,046 once invoked), scanned A, original, no licence file.

A maintainer workflow for Decky plugins, which are extensions that add features to Steam Deck. It covers building, deploying, and testing a plugin in both Steam Deck desktop-like and game-focused modes.

In plain words
What is it for?
Use it when changing a plugin's source files, Python entry point, or metadata, and when testing UI or remote-procedure-call work on Steam Deck.
Why use it?
It gives maintainers a defined way to check Deck-facing changes, capture screenshots, and optionally inspect logs during development.

Skill for Cursor

Written for Cursor: installed under .cursor/.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is ./scripts/setup-dev.sh # once: SSH keys (+ Decky CLI on Linux).

Good fit Use it when changing a plugin's source files, Python entry point, or metadata, and when testing UI or remote-procedure-call work on Steam Deck.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/qd313/decky-plugin-studio
agentmods
npx agentmods add skills/qd313/decky-plugin-studio/decky-dev-loop

Made for: Cursor.

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 decky-dev-loop

README.md
[![agentmods](https://agentmods.dev/badge/skills/qd313/decky-plugin-studio/decky-dev-loop/github.svg)](https://agentmods.dev/skills/qd313/decky-plugin-studio/decky-dev-loop)
Your own site
<a href="https://agentmods.dev/skills/qd313/decky-plugin-studio/decky-dev-loop"><img src="https://agentmods.dev/badge/skills/qd313/decky-plugin-studio/decky-dev-loop/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 decky-dev-loop

Your own site · 80×15
<a href="https://agentmods.dev/skills/qd313/decky-plugin-studio/decky-dev-loop"><img src="https://agentmods.dev/badge/skills/qd313/decky-plugin-studio/decky-dev-loop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,046 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 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 $0.00073 $0.01046
Opus 5.5 $0.00029 $0.00418
Sonnet 5.5 $0.00015 $0.00209
Haiku 4.5 $0.00007 $0.00105

Measured today against content hash 05452278d780, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

decky-dev-loop 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 today.

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.

.cursor/skills/decky-dev-loop/SKILL.md · 108 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. today Changed · -2 lines 05452278d780
  2. 1mo ago First seen · 110 lines · 73 tokens per session scan A 61d8eaaec4c2

Subscribe to this mod's changes

decky-dev-loop is a skill published in the GitHub repository qd313/decky-plugin-studio (2 stars, last pushed today), with no licence file. It adds 73 tokens to every session and 1,046 once invoked, about $0.0003 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.

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