What PingDog watches
One engine — probe on a schedule, compare, alert — pointed at every layer you depend on. Pick a check type to see exactly what it confirms.
Website & API monitoring
Point PingDog at a URL and it makes a real HTTP request on your schedule — validating the status code, measuring the round-trip, and optionally matching a string in the response body — then alerts you the moment the check fails.
SSL certificate monitoring
An expired certificate takes a site fully offline for every visitor at once, and it always happens at the worst time. PingDog connects over TLS on your schedule, reads the certificate, and warns you well before it lapses.
Blockchain RPC node monitoring
An RPC endpoint that answers but has stopped advancing is worse than one that is down — your app keeps reading stale state and never errors. PingDog calls the chain on your schedule and catches exactly that.
MCP server monitoring
AI agents fall over quietly when the MCP server behind them stops responding. PingDog connects to your MCP endpoint on a schedule and confirms it can actually list its tools — a real handshake, not just an open port.
A2A agent monitoring
PingDog runs a real A2A health check on your schedule: it fetches the agent card, verifies it carries the fields other agents rely on, and pings the endpoint — so a broken agent surfaces before it breaks a workflow.
TCP port monitoring
Not everything speaks HTTP. PingDog opens a TCP connection to a host and port on your schedule and measures how long it takes — so a database, broker or mail server that stops accepting connections pages you.
DNS monitoring
When DNS breaks, nothing else matters — the healthiest server in the world is unreachable if its name does not resolve. PingDog resolves your hostname on a schedule and watches the answer.