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.
npx skills add arctan303/creator.skill --skill product-spec-buildergit clone --depth 1 https://github.com/arctan303/creator.skillWrote 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.
[](https://agentmods.dev/skills/arctan303/creator.skill/product-spec-builder)<a href="https://agentmods.dev/skills/arctan303/creator.skill/product-spec-builder"><img src="https://agentmods.dev/badge/skills/arctan303/creator.skill/product-spec-builder/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.
<a href="https://agentmods.dev/skills/arctan303/creator.skill/product-spec-builder"><img src="https://agentmods.dev/badge/skills/arctan303/creator.skill/product-spec-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00033 | $0.00724 |
| Opus 5.5 | $0.00013 | $0.00290 |
| Sonnet 5.5 | $0.00007 | $0.00145 |
| Haiku 4.5 | $0.00003 | $0.00072 |
Grade A, and why
product-spec-builder 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.
What it actually says
需求构建技能 (product-spec-builder)
Purpose
从用户文字中拆出真实目的、用户、场景、边界和成功条件，形成可验收的产品契约；不要把一句话包装成完整需求。
Trigger
- 0→1：产品目标、用户、核心场景或首版范围尚未形成。
- 产品变更：新增或改变外部行为，但变更目的、范围、兼容性或验收记录仍缺失/不充分。
- “Bug 修复”实际需要重新定义正确行为。
有效决定已确认目的、外部行为和验收标准时，单一小改直接进入 dev-builder，需要阶段计划才进入 dev-planner；仅恢复既定行为、内部重构、测试、CI 或文档时不触发。
Required context
- 用户原始想法、痛点或变更请求。
- 已有 Product Spec、仓库事实、接口和设计材料（如果存在）。
- 已确认约束、参考案例、截图、反例和不可接受结果。
- 当前已知事实、推断和未知项。
Workflow
- 先判断 0→1、产品变更或维护执行，不按用户使用的“优化/修复”字眼机械分类。
- 抽取已知目的、目标用户、核心场景、外部行为、范围和非目标。
- 只追问必要且未决的体验边界：用户能力、交互/默认行为、兼容性、显著成本、隐私/知识作用范围或缺失授权。已有决定不重问；工程实现与可自行核查的事实直接处理，每轮最多 2 个问题。
- 信息足够时停止追问，把未知项写成临时假设或明确阻塞。
- 0→1 生成 Product Spec；产品变更原位修订条款，标明待实现和旧决定替代关系。历史明细按需移出当前正文，不只追加相反声明。
- 明确且可复用的项目准则交给 project-knowledge 原位沉淀；一次性例外与助手推断不能自动变成长期用户偏好。未决问题只暂停其依赖部分。
Output
- 路线与依据。
- 已确认事实、临时假设和待确认问题。
- 编号需求
REQ-*与可观察验收标准AC-*。 docs/Product-Spec.md或项目约定文件；产品变更包含变更 ID、兼容性、迁移、回滚和非目标。
Stop or escalate
- 无法判断是恢复行为还是重新定义行为：最多追问 2 个关键问题。
- 目标用户、核心场景或成功条件缺失且会改变方案：停止等待确认。
- 依赖未确认的外部接口或业务规则：记录阻塞，不编造答案。
- 产品契约已充分且请求只是维护：转交
bug-fixer或dev-builder。
References
执行前读取 stage-contract.md。
What ships with it
2 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.
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.
- 7d ago Changed · +1 lines · -49 tokens per session ad3a86978c68
- 1mo ago Changed 52ce6daefa7e
- 1mo ago First seen · 52 lines · 82 tokens per session scan A 5cebc54e9231
product-spec-builder is a skill published in the GitHub repository arctan303/creator.skill (19 stars, last pushed 7d ago), licensed MIT. It adds 33 tokens to every session and 724 once invoked, about $0.0001 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 2026-08-30.
Other skills, from other repositories
html-ppt-hermes-cyber-terminal
OpenDesign + BYOK: choosing and wiring your own model, hands-on — cost, quality, and the routing decision. Built as a decision-grade AI literacy deck for engineers, IT, applied-AI teams.
development
An index of programming guidance for Python, Go, Rust, TypeScript, Java, C++, and shell scripting.
tencent-docs
A Tencent Docs assistant for creating, reading, editing, organizing, importing, and exporting online documents, spreadsheets, presentations, diagrams, and forms.
debugging-executions
Debug failed or wrong-output workflow executions using executions tools. Load when the user reports execution failures, unexpected node output, empty parameter values after a successful run, or a node showing a red or failed expression error. Also load when a live run you started for the user fails with an error from…
wechat-search
Search WeChat Official Account articles using OpenClaw's web search, Tavily API, and web fetch capabilities with compliance-focused design.
flow-next-tracker-sync
Project a flow-next spec to a tracker issue (Linear, GitHub, GitLab, Jira) and reconcile two-way. Use when asked to sync to a tracker. NOT plan-sync.