WATCHLOG PRODUCT · RELIABILITY

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Know when your APIs are failing before your users do.

Multi-region HTTP uptime checks, response validation, latency tracking, and SLA monitoring for every endpoint you own or depend on.

Reliability

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Multi-region checks·Response validation·SLA tracking

THE PROBLEM

Your API is your product. Downtime is unacceptable.

APIs break in subtle ways — they return 200 with a wrong body, they timeout after 10 seconds, they succeed in one region and fail in another. Basic ping checks miss all of this. You need endpoint-level validation from everywhere your users are.

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Endpoints return 200 with errors

HTTP 200 with {"error": "payment failed"} looks like success to a ping check.

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Regional failures go unnoticed

Your API works perfectly in Frankfurt. It times out for users in Singapore and nobody knows.

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SLA breaches go unreported

You committed to 99.9% uptime. You have no way to measure or prove it.

WHAT'S MONITORED

Everything API Monitoring captures.

Real signals collected by the Watchlog Agent — available in your dashboard within 60 seconds of enabling.

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Multi-region checks

HTTP checks from 20+ global probe locations on configurable intervals (1–60 min).

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Response validation

Validate HTTP status code, response headers, and body content with JSON path or regex.

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Latency percentiles

p50, p95, and p99 response time tracked per endpoint and per probe region.

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SLA tracking

Uptime percentage calculated per endpoint per month with configurable SLA targets.

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SSL certificate expiry

TLS certificate expiry monitored per endpoint — alerts at 30, 14, and 7 days.

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Incident timeline

Every downtime event recorded with start time, duration, affected regions, and alert delivery.

LIVE VIEW

Uptime status — all endpoints, all regions.

See every monitored endpoint, its current status, uptime percentage, and last incident at a glance.

● API Monitoring · Live

●/api/health99.98%12ms avgLast incident: 12 days agoONLINE

●/api/checkout99.71%142ms avgLast incident: 2h agoRECOVERING

●/api/payments100%89ms avgLast incident: NeverONLINE

●/api/webhook98.4%340ms avgLast incident: 1 day agoDEGRADED

p95 latency — /api/health (7d)

CAPABILITIES

What API Monitoring gives you.

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Global probe network

20+ probe locations check your endpoints from the regions your users are actually in.

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Body and header validation

Assert specific JSON fields, header values, or response body patterns — not just status codes.

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Latency SLA monitoring

Define latency budgets per endpoint and get alerted when p95 breaches your threshold.

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Instant failure alerts

Outage detected in under 60 seconds. Route alerts to Slack, PagerDuty, or any webhook.

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SSL expiry monitoring

Certificate expiry checked continuously — never get surprised by a TLS renewal deadline.

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Recovery notifications

Get notified when an endpoint recovers — not just when it fails. Close the incident loop automatically.

USE CASES

How engineering teams use API Monitoring.

⇄Third-party API degradation

Your payment processor is returning 200 with timeout errors. Response body validation catches it. Your ping check would not.

External APIsValidationSLA

▣Regional latency monitoring

API is fast in Europe and slow in Asia-Pacific. Multi-region probes expose the problem before users complain.

LatencyGlobalPerformance

⚡SLA reporting

Monthly SLA reports generated from uptime data per endpoint. Share with stakeholders with one click.

SLAReportingCompliance

◆SSL expiry prevention

Alert fires 30 days before certificate expiry. Engineering has time to renew. Users never see a security error.

SSLCertificatePrevention

PLATFORM FIT

API Monitoring inside the Watchlog platform.

API Monitoring connects with Alerts for instant outage notification, Log Monitoring for access log correlation, and AI Analysis for root cause when multiple endpoints degrade simultaneously.

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API Monitoring

This product

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Alerts

Instant outage and recovery notifications

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Log Monitoring

Access logs correlated with downtime

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AI Analysis

Multi-endpoint root cause scoring

QUICK START

Start API Monitoring in under 2 minutes.

No YAML. No complex configuration. The Watchlog Agent handles discovery automatically.

Create Your Watchlog Account

https://app.watchlog.io/apimonitors

Create a New Monitor

Click "New Monitor", enter your API endpoint URL, select the monitoring interval, and configure validation rules if needed.

Configure Alert Webhooks

Create Telegram, Slack, or custom webhooks to receive instant notifications when your API becomes unavailable.

https://app.watchlog.io/webhook

GET STARTED

Start monitoring with API Monitoring.

Multi-region uptime checks, response validation, and SLA tracking — no agent required.

Start Free →Request Demo

Questions? Talk to us → [email protected]