Attn.ca
Send one private API notification to every paired device you own.
Pair the destinations you want to be reached at, mint an API key, and POST a title and a message body. Every paired destination gets the notification. There is no recipient field, because there is nobody else to send to.
What it does
- Pairs browser push and Telegram destinations to one account
- Issues scoped API keys for sending
- Delivers to every paired destination in one call
- Honours do-not-disturb windows and deduplication keys
- Keeps an activity feed and a public status page
- Exposes the same capability through a Model Context Protocol server for agent tooling
The documentation includes ready-made recipes for the places these calls usually live: cron jobs, GitHub Actions, systemd units, and small scripts in Python, Node, or PowerShell.
Self-notify only
Attn cannot message arbitrary people. That single constraint is what makes the rest of it simple — no abuse handling, no recipient permissions, no spam surface. It is a pipe for build failures, monitoring alerts, reminders, and whatever your automation decides you need to know about, and nothing else.
Project family
Attn shares the Pastebin.ca account and appears in the same public family switcher, alongside Pastebin.ca and DNSBin.ca.