uptime_monitor

dev.workers.mockbird.mockbird/mockbird · Verify this server

Free downtime alerts for any public URL — no account, armed in one call. action:"create" {url, notify?}: Mockbird GETs the url every 30 minutes from Cloudflare's network (8s timeout, 2xx/3xx = up); with notify, that webhook gets ONE message when it goes down and ONE when it recovers — debounced (two consecutive checks must agree), so single blips never fire. WITHOUT notify you get a pollable monitor instead — no webhook infrastructure needed. notify formats: hooks.slack.com URLs get {"text"}, discord.com/api/webhooks get {"content"}, anything else gets JSON signed with the returned secret (x-mockbird-signature: sha256=hex(hmac-sha256(secret, body))). The result includes the CURRENT up/down state (checked immediately), a public hostname-only status page /status/:id, an embeddable badge.svg, an Atom feed, and {id, secret} — STORE BOTH; they manage the monitor and cannot be recovered. action:"poll" {id, secret}: (webhook-less monitors) the down/recovered transitions since your last poll plus the latest check — empty events = nothing changed. action:"info" {id, secret}: latest check, 24h ok-rate, recent up/down transitions, alert delivery state. action:"delete" {id, secret}: stop monitoring. Limits: 3 live monitors per IP — deleting one frees the slot immediately (the 429 states the limit); pollable monitors not polled for 30 days are removed. For cron jobs / scheduled tasks use the inverse tool: heartbeat.