openspec-agents: Skill for Claude Code

.claude/skills/openspec-new-change/SKILL.md

openspec-new-change is a skill for Claude Code from gmf520/openspec-agents. It costs 40 tokens per session (658 once invoked), scanned A, original, no licence file.

A starting step for an OpenSpec change workflow, where a feature, fix, or modification is described through structured project documents.

In plain words
What is it for?
Use it when beginning a new code change that you want to plan through the OpenSpec artifact workflow.
Why use it?
It replaces an unstructured starting point with a step-by-step way to define the change.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is gmf520/openspec-agents's own configuration. It tells Claude Code how to work on openspec-agents 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 openspec-agents configures →

Reuse

Borrowing it

Nothing to install: this file belongs to gmf520/openspec-agents. 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/gmf520/openspec-agents/main/.claude/skills/openspec-new-change/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/gmf520/openspec-agents

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-new-change

README.md
[![agentmods](https://agentmods.dev/badge/skills/gmf520/openspec-agents/openspec-new-change.svg)](https://agentmods.dev/skills/gmf520/openspec-agents/openspec-new-change)
Your own site
<a href="https://agentmods.dev/skills/gmf520/openspec-agents/openspec-new-change"><img src="https://agentmods.dev/badge/skills/gmf520/openspec-agents/openspec-new-change.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 658 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 $0.00040 $0.00658
Opus 5 $0.00020 $0.00329
Sonnet 5 $0.00008 $0.00132
Haiku 4.5 $0.00004 $0.00066

Measured 7d ago against content hash 5daea20179a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

openspec-new-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 7d 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.

.claude/skills/openspec-new-change/SKILL.md · 75 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 7d ago First seen · 75 lines · 40 tokens per session scan A 5daea20179a3

Subscribe to this mod's changes

openspec-new-change is a skill published in the GitHub repository gmf520/openspec-agents (17 stars, last pushed 4mo ago), with no licence file. It adds 40 tokens to every session and 658 once invoked, about $0.0002 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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