Features · Monitor types
A client's project is more than its homepage: an API behind it, a nightly job, a checkout flow and the providers it leans on. Probecast watches them from up to four regions — US West, US East, Europe and Asia — and files every monitor under the client it belongs to. On Indie, websites are checked from US East; Pro and Agency use all four.
At a glance
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| – | 10 | 50 | 100 |
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| – | 10 | 30 | 100 |
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| – | 1 | 5 | 20 |
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| – | – | – | 10 |
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| 10 | 10 | 60 | all |
| Websites |
|
|---|---|
| APIs & endpoints |
|
| Ping, port & TCP |
|
| Heartbeats |
|
| Browser flows |
|
| Third-party services |
|
Numbers are monitors per account. Ping, port and TCP checks count toward the API allowance.
What you own
Each check records response time and status, alerts you when it fails and writes the incident into the client's history — which is what the monthly report reads later.
Websites
Is the page up, how fast does it answer and is the SSL certificate about to expire? You choose how many days ahead the expiry warning arrives.
Content checks catch the broken deploy that still returns 200: the page must contain a phrase, must not contain another one — or both.
Pro and Agency check each site from all four regions; Indie checks from US East.
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| – | 10 | 50 | 100 |
APIs & endpoints
GET, POST or HEAD with your own headers, the status codes you expect and an optional keyword in the response. Paid plans choose which regions check each endpoint.
Built for health routes, webhook receivers and the API a mobile app depends on.
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| – | 10 | 30 | 100 |
Ping, port & TCP
A database port, a mail server, an SFTP drop or a game server. Ping answers “is the host there”; port and TCP answer “is the service listening”.
Heartbeats
Some failures make no noise: the nightly backup that stopped running, the queue worker that died quietly. Your job calls a ping URL when it finishes — if the call doesn't arrive within the expected window plus a grace period, you hear about it.
curl -fsS https://probecast.io/api/heartbeat/ping/<slug>| Basic | Indie | Pro | Agency |
|---|---|---|---|
| – | 1 | 5 | 20 |
Synthetic browser flows
A real browser walks through the flow that earns the client money and fails the check when a step breaks. Scripts run in an isolated sandbox; a failed run keeps a screenshot of the step that broke.
Describe the flow in plain words and AI drafts the script for you to review. Where we use AI →
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| – | – | – | 10 |
Certificates & domains
Certificate expiry comes with every website monitor. On every paid plan, Proactive monitors also watch certificates and domain registrations on their own — the renewal that lapses because the card on file expired at the client's registrar. Agency adds reminders for the renewals no check can see: contracts, licenses and security tests.
What you depend on
Half of the incidents a client notices start at a provider: the payment gateway, the email API, the auth service. Probecast already watches them for you.
Third-party services
Stripe, Shopify, OpenAI, Cloudflare, Vercel and the rest of the stack your projects lean on — checked continuously, with a public status page for each one. Add them to a client and their outages land next to yours, so you can tell the client which side broke.
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| 10 | 10 | 60 | all |
MCP servers
MCP servers are checked with a real protocol handshake, not a ping: a server that answers HTTP but can't initialize a session is never reported as up. They live in the same catalog and the same allowance.
| Basic | Indie | Pro | Agency |
|---|---|---|---|
| 10 | 10 | 60 | all |
Set up from anywhere
Websites, APIs and heartbeats can be created through the REST API, the CLI or the MCP server — the same quotas and the same client folders as the dashboard.
npx probecast add --type website --name "acme storefront" \
--url https://acme.com --client "Acme"
Created website monitor 4f2a91c0-…