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playlab42: Skill for Claude Code

.github/skills/openspec-apply-change/SKILL.md

openspec-apply-change is a skill for Claude Code from z4ppy/playlab42. It costs 53 tokens per session (2,521 once invoked), scanned A, original, no licence file.

An implementation workflow for OpenSpec changes, a structured way to describe and manage proposed software changes. It works through the tasks in a change from start to finish.

In plain words
What is it for?
Use it when starting, continuing, or completing implementation of an OpenSpec change.
Why use it?
It gives an agent a defined process for turning an approved change plan into code and completed tasks.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is z4ppy/playlab42's own configuration. It tells Claude Code how to work on playlab42 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 playlab42 configures →

not rated 2repo 11d ago A scan 53 tokens custom licence
View source ↗ z4ppy/playlab42 z4ppy.github.io
Reuse

Borrowing it

Nothing to install: this file belongs to z4ppy/playlab42. 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/z4ppy/playlab42/main/.github/skills/openspec-apply-change/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/z4ppy/playlab42

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 openspec-apply-change

README.md
[![agentmods](https://agentmods.dev/badge/skills/z4ppy/playlab42/openspec-apply-change/github.svg)](https://agentmods.dev/skills/z4ppy/playlab42/openspec-apply-change)
Your own site
<a href="https://agentmods.dev/skills/z4ppy/playlab42/openspec-apply-change"><img src="https://agentmods.dev/badge/skills/z4ppy/playlab42/openspec-apply-change/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 openspec-apply-change

Your own site · 80×15
<a href="https://agentmods.dev/skills/z4ppy/playlab42/openspec-apply-change"><img src="https://agentmods.dev/badge/skills/z4ppy/playlab42/openspec-apply-change.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,521 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 $0.00053 $0.02521
Opus 5.5 $0.00021 $0.01008
Sonnet 5.5 $0.00011 $0.00504
Haiku 4.5 $0.00005 $0.00252

Measured 1mo ago against content hash 12480be87482, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

openspec-apply-change 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 1mo 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.

.github/skills/openspec-apply-change/SKILL.md · 206 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. 1mo ago First seen · 206 lines · 53 tokens per session scan A 12480be87482

Subscribe to this mod's changes

openspec-apply-change is a skill published in the GitHub repository z4ppy/playlab42 (2 stars, last pushed 11d ago), with no licence file. It adds 53 tokens to every session and 2,521 once invoked, about $0.0002 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 2026-10-03.

PlanningProject managementcopilotiavscode
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