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I built an API monitor because I was tired of silent failures returning 200 OK

Hey r/SideProject , A while ago my API had a silent breakdown: the gateway was returning HTTP 200 OK, but the actual JSON response was an error message saying the database connection had timed out. My uptime tool showed green checkmarks the entire time while users were blocked. I spent the last months building Continuum ( https://continuumnexus.com ) to fix this for my own apps. Instead of just pinging a URL for a status code, it actually validates the JSON body, tests chained multi-st

五维评分

付费意愿
50
需求真实度
62
个人可落地
78
竞争空间
32
新鲜度
42

AI 分析

痛点:传统 uptime 监控只看 HTTP 状态码,网关返回 200 OK 但 JSON body 里其实是报错信息,导致 API 静默故障期间监控全绿、用户却已经被阻断。

目标用户:独立开发者、小型 SaaS 团队和后端工程师,尤其是依赖多步链路(登录→取 token→取数据)的 API 服务方。

证据:My uptime tool showed green checkmarks the entire time while users were blocked. / Instead of just pinging a URL for a status code, it actually validates the JSON body, tests chained multi-step requests (like login, fetch token, get profile), and checks from 5 global regions.

变现:按监控数量/检查频率/区域数分档的订阅制 SaaS(免费额度 + $9~29/月 付费档),或按 API 调用量计费;后续可加 Slack/PagerDuty 告警集成、团队席位收费。

MVP:两周内用 Cron + 无头 HTTP 客户端做一个最小版:配置 URL、期望的 JSON 字段/错误关键字黑名单、可选的链式请求(上一步响应作为下一步入参),失败即发 Slack/邮件/webhook 告警;单区域先跑通,UI 只做配置列表 + 历史结果,不做 5 区域。

竞品:Checkly、Datadog Synthetic Monitoring、Better Stack (Better Uptime)、UptimeRobot、Pingdom、Hyperping、Assertible、Postman Monitors、AWS CloudWatch Synthetics

摘要:一位 bootstrapped 开发者发布 Continuum,起因是他自己的 API 出现静默故障:网关返回 200 OK,但 JSON body 里是数据库连接超时的报错,而 uptime 工具全程显示绿色对勾。产品除了查状态码,还会校验 JSON body、执行登录→取 token→取资料的链式多步请求,并从 5 个全球区域检测,首页提供免注册的在线测试。痛点真实且已被大量付费监控产品验证,但赛道竞品密集,帖中未出现付费意愿原话或收入数据。