Checkly

Checkly 把合成监控写成代码：用 Playwright 脚本描述浏览器流程，用 constructs 声明检查频率与探测区域，`npx checkly init` 之后就能在 CI 里管理测试、告警与状态页。它同时支持 API 检查与多地域探测，定位是给开发者和 AI Agent 用的可靠性层，官方示例里直接给出 Claude Code 生成检查脚本的流程，2026 年起强调让 Agent 参与值守。 🔗 文档: https://www.checklyhq.com/docs

Checkly turns synthetic monitoring into code: browser flows are written as Playwright scripts, checks and locations declared with constructs, and everything managed from CI after `npx checkly init`, including tests, alerts and status pages. API checks and multi-region probing run alongside. It bills itself as a reliability layer for developers and agents, with documented flows where Claude Code writes the check, and has pushed agent-operated on-call since 2026. 🔗 Docs: https://www.checklyhq.com/docs