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I missed an SSL renewal, found SSL monitoring was paywalled everywhere, so I built my own

A while ago the SSL certificate on one of my sites expired and visitors got the "Not Secure" warning. Auto-renewal had failed and nothing alerted me. When I looked for monitoring, most tools only offered SSL expiry alerts on paid plans, and those plans were expensive for someone running a few small sites. So I built Spot Downtime : SSL expiry alerts before your certificate runs out Uptime checks for websites, APIs, ports, DNS and cron jobs Retries before alerting, so no false ala

五维评分

付费意愿
45
需求真实度
55
个人可落地
90
竞争空间
25
新鲜度
35

AI 分析

痛点:小型站点运营者需要 SSL 证书到期和 uptime 监控,但主流工具的 SSL 告警多在付费墙后,对少量站点用户偏贵。

目标用户:运行少量网站/API 的独立开发者、小团队和自托管用户。

证据:most tools only offered SSL expiry alerts on paid plans, and those plans were expensive for someone running a few small sites. Pro is free for 6Months for the first 100 people who try it.

变现:Freemium SaaS:免费版限制监控数量/检查频率,Pro 订阅解锁更多监控、短信/电话告警、更长日志保留、团队协作和自定义状态页。

MVP:2 周内可做:用 cron 定时检查 SSL 证书到期时间和 HTTP/端口可用性,支持邮件/Slack/Discord/webhook 告警,加一个简单公开状态页。

竞品:UptimeRobot、Pingdom、Better Stack / Better Uptime、StatusCake、HetrixTools、Oh Dear

摘要:发帖人因 SSL 证书过期未提醒,发现多数工具的 SSL 到期告警都在付费墙后,于是自建 Spot Downtime,提供 SSL 到期提醒、uptime 检查、多通道告警和公开状态页,并为前 100 名 Reddit 用户提供 6 个月 Pro 免费。该方向痛点真实,但 SSL/uptime 监控赛道拥挤,且帖子未展示他人付费或收入证据。