FlareCanary monitors the third-party APIs you depend on and alerts you the moment their response schemas change — before those changes break your production code.
Your app integrates with Stripe, Twilio, GitHub, Salesforce, and dozens more. When their APIs change, you discover it in production — at 2 AM, from a PagerDuty alert.
API providers ship changes without warning. A removed field, a type change, a new required parameter — and your integration silently fails.
Even when APIs publish changelogs, they lag behind actual changes by days or weeks. Some never publish at all.
You learn about the change when your users report errors, your dashboards go red, or your on-call gets paged.
Point FlareCanary at the API endpoints you depend on. Add auth headers if needed. That's it.
FlareCanary calls each endpoint, captures the response structure, and establishes a baseline schema.
When the response schema changes — new fields, removed fields, type changes — you get an instant alert with a clear diff.
FlareCanary shows you exactly what changed, when it changed, and how critical it is — so you can act before your users feel the impact.
Detects new fields, removed fields, type changes, and structural differences between API responses.
Changes are classified as info, warning, or breaking — so you know what needs immediate attention.
Get notified via email, Slack, or webhook. Route alerts to the right team automatically.
Track every schema change over time per endpoint. Understand drift patterns and API stability.
Ignore dynamic fields like timestamps and pagination tokens. Focus on structural changes that matter.
See all your monitored endpoints, their health status, and recent drift events at a glance.
Start free. Upgrade when you need more endpoints or faster checks.
Join the waitlist and get early access when we launch.