Affordable Website and API Uptime Monitoring

Get started free. Monitor up to 10 endpoints for just $0.99/month. Or upgrade to monitor up to 500 endpoints as you grow.

No bloat. No contracts. Just peace of mind.

Monitor websites, APIs, and authenticated health endpoints with 1-minute uptime checks, SSL tracking, and encrypted custom request headers such as Authorization and API keys. Explore the uptime monitoring API →

Your first endpoint is free. Card verification is required to prevent abuse. You will not be charged for the free endpoint.

You're Covered. Even While You Sleep.

SiteInformant Uptime Monitoring

Powerful Monitoring. Budget-Friendly.

See SiteInformant in Action

Real-time uptime, response time, and SSL monitoring in a clean, focused dashboard.

Live endpoint check

Check a website or API now

See HTTP status, response time, resolved IP, and SSL details. No account required.

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Monitor this endpoint every minute
SiteInformant can check this endpoint every minute and notify you through email, Slack, Discord, or your own webhook.
Your first endpoint is free. Card verification is required to prevent abuse. You will not be charged for the free endpoint.
Monitor this endpoint every minute
SiteInformant dashboard showing uptime percentage, response time graph, and SSL expiration status.
API-ready checks (with auth headers)
Monitor authenticated endpoints by attaching request headers. Values are encrypted at rest and never shown publicly.
SiteInformant request headers UI showing Authorization header configured.
Example: add Authorization or X-Api-Key to check protected APIs.
Try the Dashboard
Low-noise alerting

Useful alerts, not reflexive alarms

SiteInformant combines outage confirmation, sustained response-time alerts, and maintenance controls so notifications reflect problems that deserve attention.

Learn how to reduce false positive uptime alerts

Outage confirmation

Suspected downtime for eligible public HTTP and HTTPS endpoints on ports 80 or 443 is rechecked from a second U.S. cloud region before an alert is sent.

Sustained slowdown alerts

Set a response-time threshold with degradation and recovery delays, then receive one alert and one recovery notification for each confirmed incident.

Maintenance windows

Pause alerts with a one-time window or a recurring weekly UTC schedule. Checks and history continue throughout maintenance.

Operational context

Know what changed and notify the right audience

Availability is the beginning of the story. SiteInformant also keeps useful latency context and gives each endpoint a deliberate alert path.

Retained p95 latency

See the response time reached by 95% of successful checks, even after older raw history is compacted.

P95 response-time monitoring

Deployment comparisons

Record a release and compare p95 across up to 30 successful checks before and after it.

Timed escalation

Reuse named Email, Slack, Discord, Teams, or webhook destinations in ordered downtime steps.

Uptime alert escalation

For Agencies Managing Client Sites

If you maintain client websites, downtime is not just a technical problem. It is an expectations problem. SiteInformant helps you catch issues early and communicate clearly.

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Less Firefighting

Know when a client site is down before your client tells you.

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Clear Proof

Uptime history and SSL health you can reference in conversations.

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Simple API

Use monitoring data in dashboards, automations, and reports.

Agency Monitoring Overview

For Developers and DevOps

Monitor sites, endpoints, and SSL with clean data and low-noise alerting. SiteInformant is built to be simple to automate, trustworthy, and straightforward to operate.

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Authenticated Monitoring

Monitor protected APIs and services using encrypted request headers like Authorization and API keys.

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Clean JSON API

Use monitoring data in dashboards, automations, and workflows.

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Groups for Real Systems

Organize by service, client, environment, or team.

DevOps Monitoring Overview

Learn more: Uptime monitoring · Monitoring API

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Reliable Checks & Clear Status

Continuous HTTP/HTTPS checks with simple history you can trust.

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Actionable Email Alerts

Downtime and SSL expiration notifications before it’s a crisis.

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Transparent Pricing

The first endpoint is free. Monitor up to 10 endpoints for just $0.99 per month. Pro, Business, and Enterprise tiers available.

Why Choose SiteInformant?

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Truly Affordable - $0.99/month gets you 10 endpoints. Most tools charge 10x more.
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Clean Dashboard - Focused. Lightweight. No adware, no upsells.
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API-first monitoring - Monitor public or authenticated endpoints using secure request headers (encrypted at rest) and a clean JSON API.
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Privacy First - We don’t sell your data or track your visitors.
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Fast Alerts - Be the first to know when something goes wrong.
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Monitoring API - Clean JSON for dashboards, reporting, and automation.

Simple, Honest Pricing

All plans include 1-minute checks, SSL expiration alerts, email notifications, and a clean status dashboard.

Starter

First endpoint free! Up to 10 endpoints.

$0.99 / mo

Start Free
Pro

Monitor up to 70 endpoints. Perfect for freelancers and IT pros.

$4.99 / mo

Choose Pro
Special Deal
Business

Up to 150 endpoints. Great for agencies and growing teams.

$9.99 $4.99 / mo

Save 50% - Don't Miss This Deal!
Best Value
Enterprise

Up to 500 endpoints with priority monitoring and support.

$24.99 / mo

Go Enterprise

Frequently Asked

Yes - proactive emails before certificates expire.

Yes. 1 endpoint free. Then just $0.99/month for up to 10 endpoints on the Starter plan.

Start Monitoring in Under a Minute

Your first endpoint is free. Add up to 10 total endpoints for just $0.99/month.

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