Your Stripe returns 200 — but the payment failed silently. Would you know?
APIAlert monitors real API behavior — not just uptime. Silent failures, schema changes, and degraded responses that return 200 while your checkout breaks.
Free for a while — 1 monitor, no card, no time limit.
/v1/charges/v1/chat/completionsPaste any URL. See what we detect.
The pre-filled URL returns HTTP 200 with an empty body — a classic silent failure.
example of apis we are monitoring now
monitor any supplier api
Their status page shows ✅. Your users are getting errors.
Without API Alert
- ❌
Stripe's status page shows All Systems Operational. Your checkout silently breaks — every API call returns 200.
- ❌
Your uptime monitor reports green. No 503, no timeout — nothing to trigger an alert.
- ❌
By 9 AM, your support inbox has 47 'payment failed' tickets. Your team debugs your own code for hours. The API was never down.
With API Alert
- ✓
Alert at 2:03 AM:
Stripe /v1/charges → HTTP 200 but charges.data is empty - ✓
APIAlert detected the behavioral change — not just the status code. Your APIs are tested for actual output, not just reachability.
- ✓
You opened a ticket with Stripe before your first user noticed. The issue was resolved in 12 minutes.
Set up in 3 minutes. Know before your customers do.
Add any API. With or without auth.
Paste any endpoint URL. Add authentication headers if needed — Bearer token, API Key, or custom header. No code required.
We monitor every 60 seconds — with your real headers.
We ping your API with the exact same headers your app uses in production. A 200 with a broken payload won't fool us.
Your team gets alerted before your customer notices.
Instant Slack, Discord and e-mail alert the moment an API fails or degrades. You're always first to know.
Your API keys stay with you
Monitoring authenticated APIs means trusting your credentials to someone.
Most monitors store this in plain text — or don't say how they protect it. We do it differently:
AES-256-GCM encryption
Credentials are encrypted directly in your browser before ever hitting our networks.
Database never sees raw values
Our platform only manages standard hashes, ensuring complete isolation of your secrets.
Automatic revoke pause
If a credential is officially revoked, monitoring pauses instantly to prevent false alarms.
Zero-downtime rotation
coming soonSeamlessly rotate production monitoring keys without missing a single check window.
Know before your users do
No email buried in spam. No dashboard nobody opens. When an API behaves unexpectedly, your Slack or Discord gets the full picture instantly — status code, endpoint, and what it means for your users.
/v1/chargesNot just 'is it up?' — we check if it actually works.
HTTP 200 — but the payload lied
Stripe returning 200 while charges.data is empty. OpenAI responding with no choices field. We verify the response is actually usable — not just that it arrived.
Your API key expired and nobody noticed
We send your real authentication headers on every check. A 401 or rejected token triggers a specific alert — not a misleading 'API is down' that sends you chasing the wrong problem.
A field your code depends on just disappeared
The provider shipped a breaking schema change. The field your app reads is gone from the response. We track response shape, not just response code.
Rate limits before your users hit them
A vendor is already throttling your requests and you don't know yet. You'll get the Slack alert before a user reports a broken feature.
8-second response — their status page shows green
Their status page says ✅. Your endpoint is taking 8 seconds instead of 200ms. We measure actual latency — not vendor self-reporting.
SSL certificate expires in 7 days
Automated TLS expiry check on every monitored endpoint. No more surprise 'connection not secure' outages for your users.
Simple, transparent pricing.
No per-seat fees. No surprise bills. Cancel anytime.
Free
Get started with no commitment — while it lasts.
- 1 API monitor
- 5-min check interval
- 7-day history
- Slack & Discord alerts
Starter
For indie developers and small teams.
- 1 API monitored
- 60-second ping interval
- Slack, Discord & Email alerts
- 30-day uptime history
- Email support
Growth
For teams with multiple critical integrations.
- Up to 5 APIs monitored
- 60-second ping interval
- Slack, Discord & Email alerts
- Schema change detection
- Public SLA report
- 90-day uptime history
- Priority support
Scale
For companies where uptime is non-negotiable.
- Unlimited APIs monitored
- 60-second ping interval
- Slack, Discord & Email alerts
- Schema change detection
- Public SLA report
- Escalation policies
- 1-year uptime history
- Dedicated support
Annual plans billed yearly. 12 months for the price of 10.
Common questions.
Protect your third-party APIs now
14 days free. No commitment.