What we hold, what we can see, what we can’t - and how you’d find out if something went wrong on our side.
| Source | What we see | What we never see |
|---|---|---|
| Any URL | Whether the URL answers, and when it last changed | Anything else - this source takes no credential at all |
| API endpoint | The reply to the one request you define - status, timing and the field we’re told to check | Anything behind the API |
| Databases and lakehouses(Postgres · Snowflake · Databricks) | The newest timestamp and row count of the one table you point us at, read-only | Row contents, other tables, or write access - the user you grant can’t |
| Google Drive | The file list of the folder you picked - names, sizes, times | File contents, or the rest of the Drive - access is read-only and revocable from your Google account |
| Heartbeat | That your job pinged the URL, and the time it did so | Anything else about the job or the machine it runs on |
| Inbound email | Sender, subject, arrival time and size of what’s forwarded to the generated address | Your mailbox. We never connect to it - we only see what’s sent to us |
| MCP | The reply to the one tool call you define | Other tools, or anything the server doesn’t return to that call |
| Object storage(S3 · Azure · GCS) | The list of objects under one prefix | Object contents, or the rest of the bucket - the key we ask for can’t reach it |
| SFTP | Folder listings - file names, sizes and timestamps | File contents, or anything outside the folder you point us at |
| Webhook | The events posted to the URL we give you - one field checked, body capped at 64 KB | Anything we aren’t sent |
An alerting product that misses a miss has failed at its one job. Our sweep loop is watched by an independent service, and the status page is served separately from the worker it reports on - it still answers when the worker does not, is generated fresh on every request, and is never cached. If we are down, that page says so before we do.
Start with a read-only user on a folder that doesn’t matter, and watch what we do with it.