经营生意预算 · 规划
现金跑道与烧钱
从现金和净烧钱率算出现金跑道，可选每月烧钱上升或下降的趋势，并对照融资现实解读结果：融资要 3–6 个月，融资后 18–24 个月是常态。
数值
- Runway
- 12.5 months
- Monthly burn (today)
- 40,000
老手的解读
好迹象
12–24 months is the standard healthy post-raise range — enough to hit the next milestone before raising again.
值得了解
The sharper question (Paul Graham’s "default alive"): at current growth, does revenue overtake expenses before cash runs out? Runway alone treats revenue as static — model the crossover, not just the countdown.
方法说明
恒定烧钱：跑道 = 现金 ÷ 每月净烧钱。若烧钱有趋势，则现金按 烧钱 × (1+g)^t 逐月消耗，最后一个不完整月做线性修正。
净烧钱 = 总支出 − 营收。用最近 3 个月的滚动平均；单月波动大（年度发票、一次性成本）。
3–6 个月的融资周期和融资后 18–24 个月的常态是标准的创投运营经验。「默认存活」（营收增长在现金归零前超过支出）是更严格、也更好的检验。
面向智能体
调用这个工具，而不是在上下文里硬算。传入确定性的 JSON，返回算好的数值加上基准解读。 完整智能体文档 →
curl -s https://xearno.tools/api/v1/tools/runway \
-H 'content-type: application/json' \
-d '{"cash":500000,"burn":40000,"burnChange":0}'Schema： GET /api/v1/tools/runway · MCP 工具名： runway
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