CPA Calculator Ecommerce

Calculate allowable and break-even CPA for ecommerce offers using margin, refunds, and conversion assumptions. Use when teams need acquisition guardrails bef...

Security Scan

The skill is an instruction-only CPA calculator whose requested inputs and behavior align with its stated purpose and it does not request credentials, installs, or external network access.

Purpose & Capability

Name/description (CPA calculator for ecommerce) match the SKILL.md: instructions only require pricing, margins, refunds, conversion assumptions and produce CPA thresholds. No unrelated credentials, binaries, or actions are requested.

Instruction Scope

Runtime instructions are limited to doing arithmetic and producing an output template; they reference only the included references/output-template.md and ask for user-provided assumptions. There are no directives to read system files, environment variables, or to send data to external endpoints.

Install Mechanism

No install spec and no code files — the skill is instruction-only so nothing is written to disk or downloaded during install.

Credentials

The skill declares no required environment variables, credentials, or config paths — this is appropriate for a calculation-only skill.

Persistence & Privilege

always is false and the skill does not request persistent or elevated privileges or modification of other skills or system settings.

Assessment

This skill is instruction-only and appears coherent with its stated purpose. Before using it, avoid pasting any secrets or unrelated sensitive data (API keys, full business financial dumps) into the input prompts — only provide the numeric assumptions needed (price, margins, refunds, conversion). Verify the arithmetic and assumptions the agent reports before using results for budgeting decisions. If you need auditability, run the same calculations in a local spreadsheet or tool you control to double-check outputs.

先知道你能承受多少获客成本，再谈扩量。

解决的问题

很多投放问题不是量不够，而是：

• CPA 早就超出利润承受范围；
• 团队只盯 ROAS，没有明确的 CPA 上限；
• 不同 offer / SKU 应该有不同的出价天花板，但没人算。

这个 skill 的目标是： 根据商品利润结构和退款影响，算出 break-even CPA 与可接受 CPA 区间。

何时使用

• 新 campaign 启动前；
• 出价策略调整前；
• 比较不同商品 / 套餐的投放可行性。

输入要求

• 售价
• 毛利和履约成本
• 退款 / 退货影响
• 折扣和优惠
• 当前转化率或目标转化假设
• 可选：复购贡献、附加费用

工作流

1. 计算单客户可贡献利润。
2. 估算 break-even CPA。
3. 结合风险给出更保守的 allowable CPA。
4. 提示提价、控折扣、提转化等优化方向。

输出格式

1. 假设表
2. Break-even CPA
3. Allowable CPA 区间
4. 建议动作

质量标准

• 明确区分理论 break-even 和建议 CPA。
• 结果要能直接指导投放出价。
• 不能忽略退款和履约成本。
• 建议动作要具体。

资源

参考 references/output-template.md。