Break-even Calculator Ecommerce

Calculate ecommerce break-even thresholds using price, cost, shipping, ad spend, and overhead assumptions. Use when operators need a simple no-loss baseline...

Security Scan

This is an instruction-only break-even calculator; its requirements and instructions are coherent with its stated purpose and it doesn't request credentials, install software, or reach out to external endpoints.

Purpose & Capability

The name/description (ecommerce break-even calculator) matches the SKILL.md: it asks for pricing, costs, ad spend, and overhead inputs and produces break-even and sensitivity outputs. There are no unrelated environment variables, binaries, or config paths requested.

Instruction Scope

SKILL.md contains only calculation workflow, input requirements, output format, and references a local template file. It does not instruct the agent to read arbitrary system files, access credentials, call external endpoints, or transmit data outside the described purpose.

Install Mechanism

No install spec and no code files are present. Being instruction-only means nothing is written to disk or downloaded during install, which minimizes technical risk.

Credentials

The skill declares no required environment variables, credentials, or config paths. That is proportionate for a calculator that only needs numeric inputs from the user.

Persistence & Privilege

always is false and there are no indications the skill modifies agent-wide settings or other skills. disable-model-invocation is false (normal), meaning the agent could call the skill autonomously — appropriate given the low risk, but users can change agent policies if they prefer.

Assessment

This skill appears safe and self-contained: it only describes how to compute break-even metrics and uses a local output template. Before relying on results, verify the formulas and units with a few known examples (test with a simple dataset). Do not paste sensitive credentials or private data into the inputs (the skill does not need them). If you prefer stricter control, you can disable autonomous invocation for the agent so it only runs the skill when you explicitly ask.

先把“不亏钱”的线算出来，再谈放量。

解决的问题

很多电商投放或促销决策的问题，不是不会增长，而是不知道：

• 当前价格下，最低要卖多少单才不亏；
• CPA 到多少还能接受；
• 打折、包邮、广告加码后，盈亏平衡点被推高了多少。

这个 skill 的目标是： 给出一套清楚的 break-even 计算，让团队知道什么情况下只是“看起来有营收”，什么情况下才是真正不亏。

何时使用

• 新品投放前要设底线；
• 调整价格、折扣、包邮政策前；
• 老品利润变薄，想找出关键压力项。

输入要求

• 售价
• 单件成本
• 运费 / 包装 / 手续费
• 广告成本或目标获客成本
• 固定成本（如团队 / 工具 / 月度分摊）
• 折扣、退款损耗等额外变量

工作流

1. 计算单笔贡献利润。
2. 计算固定成本覆盖所需销量。
3. 反推 break-even CPA / ROAS / conversion 阈值。
4. 提示最敏感的成本项。

输出格式

1. 核心假设表
2. Break-even 结果
3. 关键阈值
4. 风险提醒与建议动作

质量标准

• 公式清楚，可复核。
• 区分可变成本和固定成本。
• 不是只给一个数字，要给可执行阈值。
• 对不确定假设做明确标注。

资源

参考 references/output-template.md。