API / JSON

Automated monitoring for
APIs, JSON and endpoints

Instant alerts when an API endpoint changes, returns a different structure or modifies critical values. Prevent production issues.

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✓ No credit card✓ 2-minute setup✓ Alerts in minutes

Specific problems

Do these situations sound familiar?

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Unstable APIs

Third-party endpoints change without notice. Your app breaks and customers complain.

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Changed JSON structures

A renamed field or a changed data type in an API response can bring down your integration.

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Modified critical values

Rate limits, API versions, configurations: values that directly affect functionality when changed.

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No traceability

When something breaks, you don't know exactly when the API changed. Without history, debugging takes hours.

How it works

Add the endpoints

Enter the API or JSON URLs you want to monitor.

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We monitor the structure

We fetch the JSON response on a schedule and compare its structure and values with the previous check.

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Instant alert

For major and critical changes you get a notification with a summary of what changed. Minor changes are recorded in the dashboard.

What you get

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JSON structure detection

New, removed or renamed fields in the response are detected automatically.

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Instant alerts

Email on every plan. Webhook and Slack from the Pro plan. Discord and Telegram on the Agency plan.

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Change history

Know exactly when the API changed. Fast debugging, no hours spent digging through logs.

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Multi-endpoint monitoring

Monitor all your critical endpoints simultaneously from the same dashboard.

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Prevent production issues

Learn about breaking changes at the next check, so you can update your integration sooner.

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Third-party monitoring

Payment, shipping or authentication APIs: monitor the JSON endpoints of the external services you depend on.

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Example: a payment provider changes the structure of its error response. The API monitor detects the difference at the next check and sends you a summary of what changed, so you can update your integration.

Illustrative scenario, not a customer result

Example scenarios

Payment integration: changed error response

A payment provider changes the structure of its error response. The API monitor compares the new JSON with the previous one.

What you receive: an alert with a summary of what changed

Several endpoints in one dashboard

You add the payment, shipping and authentication endpoints you depend on, each as a separate monitor.

What you receive: one alert per endpoint that changed, with an AI summary

Third-party API: field renamed

A third-party API renames a field in its JSON response. The change is detected at the next check.

What you receive: a summary of the change, rated minor, major or critical

Read the guide on the blog →

Get started now

Free 10-day trial, no card: up to 3 monitors, checked every 60 minutes.

Try free (no card) →

Frequently asked questions

Does it work with APIs that require authentication?

Yes, on the Agency plan. You can supply a session cookie or an Authorization header value (for example a Bearer token). It is stored encrypted.

Does it also monitor HTTP status codes?

No. The monitor compares the content of the JSON response. It does not send uptime or status-code alerts.

How often are endpoints checked?

Depending on your plan: every 60 minutes on Starter; every 15, 30 or 60 minutes on Pro; every 5, 15, 30 or 60 minutes on Agency.

Can I ignore JSON fields that always change?

No, there is no setting for ignoring fields. The AI rates each change as minor, major or critical, and alerts are sent only for major and critical changes. Minor changes are recorded in the dashboard.

Ready to start?

Monitor automatically. React in real time.