openspec-propose

openspec-propose is a skill for Claude Code, Codex, Cursor from lemmaoracle/lemma. It costs 47 tokens per session (1,044 once invoked), scanned A, original, no licence file.

A skill for proposing a new software change and generating its design, specifications, and implementation tasks in one step.

In plain words
What is it for?
Use it when you want to describe a feature or update and receive ready-to-use planning documents.
Why use it?
It turns a short description of an idea into a complete plan that a developer can review and implement.

Skill for Claude CodeCodexCursor

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/lemmaoracle/lemma/openspec-propose
Any agent
npx skills add lemmaoracle/lemma --skill openspec-propose
Clone the repo
git clone --depth 1 https://github.com/lemmaoracle/lemma

Made for: Claude Code, Codex, 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 openspec-propose

README.md
[![agentmods](https://agentmods.dev/badge/skills/lemmaoracle/lemma/openspec-propose.svg)](https://agentmods.dev/skills/lemmaoracle/lemma/openspec-propose)
Your own site
<a href="https://agentmods.dev/skills/lemmaoracle/lemma/openspec-propose"><img src="https://agentmods.dev/badge/skills/lemmaoracle/lemma/openspec-propose.svg" alt="Measured on agentmods" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,044 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00047 $0.01044
Opus 5 $0.00023 $0.00522
Sonnet 5 $0.00009 $0.00209
Haiku 4.5 $0.00005 $0.00104

Measured 3d ago against content hash 88ad070e3025, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

openspec-propose 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 3d 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.

.cursor/skills/openspec-propose/SKILL.md · 111 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. 3d ago First seen · 111 lines · 47 tokens per session scan A 88ad070e3025

Subscribe to this mod's changes

openspec-propose is a skill published in the GitHub repository lemmaoracle/lemma (1 stars, last pushed 4d ago), with no licence file. It adds 47 tokens to every session and 1,044 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 2026-08-31.

Related

Other skills, from other repositories

remove-ai-marks

Remove multi-vendor AI provenance marks: invisible Unicode (Layer A), statistical text watermarks via rewrite (Layer B, always offer), and C2PA/EXIF/XMP/container metadata on PNG/JPEG/WebP/SVG/PDF/DOCX/ODT/HTML/MD. Covers Claude, Gemini/SynthID-class, OpenAI provenance, and open-LLM sampling marks. Use when the user…

guillaumemeyer/watermarks-remover · 136 tokens

clean-user-facing-text

Clean and finalize authorized natural-language text intended for readers by auditing suspicious invisible Unicode and rewriting prose while preserving facts, meaning, and the writer's voice. Use when the user asks to clean, humanize, polish, or finalize articles, manuscripts, reports, documentation, emails, product…

guillaumemeyer/watermarks-remover · 123 tokens

fin-paper-figure

Generate academic-quality figures (>=300 DPI) for economics and finance papers.

csmar432/finai-research · 14 tokens

fin-full-pipeline

经济金融研究端到端完整流程。从研究想法到可投稿论文,覆盖文献综述、想法生成、新颖性验证、实证方法设计、论文大纲、正文写作、图表生成、LaTeX编译和投稿前检查。.

csmar432/finai-research · 63 tokens

fin-paper-draft

经济金融论文正文写作。根据PAPEROUTLINE.md大纲和REFINEDDESIGN.md研究设计,生成完整的论文正文草稿(英文/中文),覆盖Introduction到Conclusion所有章节。.

csmar432/finai-research · 49 tokens

fin-paper-plan

Generate structured paper outline adapted to target journal.

csmar432/finai-research · 8 tokens