Monitor Types

Unseenr supports 13 different monitor types for checking the health of your services, infrastructure, and certificates.

HTTP/HTTPS (UPTIME)

The most common monitor type. Sends HTTP requests to your URL and checks the response.

• Methods: GET, POST, PUT, DELETE
• Custom Headers: Add authentication or custom headers as JSON
• Authentication: None, Basic Auth, or Bearer Token
• Expected Status Codes: Default is 200-399, customizable
• Keyword Check: Verify that a specific string exists (or doesn't exist) in the response body
• JSON Path Query: Extract a value from a JSON response and compare it (eq, neq, gt, lt, gte, lte, contains)
• Request Body: Send a custom body (for POST/PUT) with configurable content type
• Degraded Threshold: Mark as degraded if response time exceeds a threshold (default: 2000ms)

TCP

Checks if a TCP port is open and optionally verifies a banner response.

• Port: The TCP port to connect to
• Expected Banner: Optional string to match in the server's banner response

Ping (ICMP)

Sends ICMP ping packets to check host availability.

• Packet Count: Number of ping packets to send (default: 4)
• Tracks packet loss and jitter in addition to response time

DNS

Queries DNS records and verifies the response.

• Record Types: A, AAAA, MX, CNAME, TXT, NS, SOA, SRV
• Expected Value: The expected DNS response
• DNS Server: Custom DNS server to query (optional)

TLS Certificate (TLS_CERT)

Monitors SSL/TLS certificate expiry and validity.

• Warning Threshold: Days before expiry to trigger a warning (default: 30)
• Critical Threshold: Days before expiry to trigger a critical alert (default: 7)
• Tracks: certificate issuer, expiry date, days remaining

Domain Expiry (DOMAIN_EXPIRY)

Checks when your domain registration expires via WHOIS lookup.

• Warning Threshold: Days before expiry to alert (default: 30)
• Tracks: domain expiry date, registrar

Heartbeat

Passive monitors that expect your server to send periodic pings. See Heartbeat Monitors for details.

PostgreSQL (POSTGRES)

Connects to a PostgreSQL database and runs a health check query.

• Connection String: Encrypted with AES-256-GCM
• Custom Query: e.g., SELECT 1
• Expected Result: Verify the query returns the expected value

MySQL (MYSQL)

Same as PostgreSQL monitoring but for MySQL/MariaDB databases.

Redis (REDIS)

Connects to a Redis instance and verifies connectivity.

• Connection String: Encrypted with AES-256-GCM

Docker (DOCKER)

Monitors Docker container status.

• Container ID: The container to monitor
• Docker Host: TCP endpoint (e.g., tcp://host:2376) or Unix socket

WebSocket (WEBSOCKET)

Opens a WebSocket connection and optionally sends a message.

• Message: Optional message to send after connection
• Expected Response: Substring to verify in the response

SMTP

Checks SMTP server availability.

• Port: Default is 25

Common Settings

All monitor types share these settings:

Setting	Default	Description
Interval	5 min	Check frequency (1 min on Pro+)
Timeout	10 sec	Maximum time to wait for response
Fail Threshold	2	Consecutive failures before marking as DOWN
Recheck on Failure	Yes	Immediately recheck after a failure
Required Regions	1	Number of regions that must confirm failure
Regions	FSN1	Check regions (multi-region on Pro+)

Monitor Limits

Plan	Max Monitors
Free	3
Starter	5
Pro	20
Business	100
Scale	300
Platform	1,000