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 skill-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/skill-builder)<a href="https://agentmods.dev/skills/arctan303/creator.skill/skill-builder"><img src="https://agentmods.dev/badge/skills/arctan303/creator.skill/skill-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/skill-builder"><img src="https://agentmods.dev/badge/skills/arctan303/creator.skill/skill-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00031 | $0.00609 |
| Opus 5.5 | $0.00012 | $0.00244 |
| Sonnet 5.5 | $0.00006 | $0.00122 |
| Haiku 4.5 | $0.00003 | $0.00061 |
Grade A, and why
skill-builder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
技能构建技能 (skill-builder)
Purpose
建立职责明确、可触发、可验证并与三路由及风险门禁一致的可复用技能，而不是增加百科式说明。
Trigger
- 新能力无法由现有 Skill 合理承担。
- 现有 Skill 需要重构其触发边界、契约或验证方式。
- 纯文案调整或通用 Agent 行为不需要新 Skill。
Required context
- 当前
AGENTS.md。 - 1～2 个职责最接近的现有 Skill 及阶段契约。
- 新能力的触发/非触发场景、输入、输出、合格标准和红线。
- 至少一个正例、一个边界反例和可自动检查的行为用例。
Workflow
- 先证明职责不与现有 Skill 重叠，并确定三路由中的位置。
- 创建
SKILL.md、agents/openai.yaml和必要的references/stage-contract.md。 SKILL.md使用 Purpose、Trigger、Required context、Workflow、Output、Stop or escalate、References 七个统一章节。- 将详细模板、检查表和 Examples 放入阶段契约，入口保持短而明确。
- 更新 Prompt 用例集、YAML 展示信息和相关文档。
- 运行结构校验、YAML 解析、Prompt 契约评测、构建与验证。
Output
- 完整技能目录和职责说明。
- 触发/非触发边界、阶段契约与 Examples。
agents/openai.yaml展示名、描述和显式引用$skill-name的默认提示。- 新增或更新的行为用例和验证证据。
Stop or escalate
- 职责可由现有 Skill 承担：修改现有 Skill，不新增目录。
- 拟改规则超出已有授权、或触及未授权权限/发布边界：仅暂停依赖该选择的部分。
- 没有可测试边界或只复制通用行为：打回。
- 不得伪造完成/验证或放宽未授权安全边界；用户已授权的风险与审查政策校准应同步更新规则、用例和证据。
References
执行前读取 stage-contract.md。
授权说明：用户已明确要求本次规则优化时按已有范围执行，不因跨多个 Skill 重复确认。用户保留真实任务测试时，只报告获准的结构/脚本检查，不擅自试跑或声称行为通过。
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 · -30 tokens per session 4c3648cc2f9a
- 1mo ago Changed · +2 lines 8bb5be09e1db
- 1mo ago First seen · 51 lines · 61 tokens per session scan A feb8bab649b6
skill-builder is a skill published in the GitHub repository arctan303/creator.skill (19 stars, last pushed 7d ago), licensed MIT. It adds 31 tokens to every session and 609 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.
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