Monitor your REST APIs with full HTTP method support, custom headers, authentication tokens, and request body payloads. Validate responses and track performance.
APIs are the backbone of modern software architecture. When an API endpoint goes down, the impact cascades across your entire ecosystem - breaking mobile apps, disrupting partner integrations, and causing data loss.
Traditional website monitoring tools only send GET requests and check for HTTP 200 responses. But real-world APIs use POST, PUT, PATCH, and DELETE methods with custom headers and request bodies.
UptimeMonitorX provides developer-grade API monitoring that mirrors how your APIs are actually consumed. Send custom HTTP methods with headers and request bodies, validate response codes and content.
Monitor endpoints using any HTTP method - GET, POST, PUT, PATCH, DELETE, or HEAD.
Send custom headers including Authorization tokens, API keys, and Content-Type headers.
Include JSON, form data, or raw request bodies for POST, PUT, and PATCH endpoints.
Define exact HTTP status codes that indicate a healthy API response.
Track API response times with millisecond precision on every check.
Validate that API responses contain expected fields, values, or data structures.
Monitor external APIs your application depends on - payment gateways, shipping providers, email services.
Verify webhook endpoints are online and processing payloads correctly.
Yes. You can add any custom HTTP headers including Authorization headers with Bearer tokens, Basic auth, or API keys.
GET, HEAD, POST, PUT, PATCH, and DELETE - covering all standard REST API operations.
Yes. For POST, PUT, and PATCH requests, you can specify a JSON request body sent with every check.
Each check sends a single HTTP request at the configured interval. Choose a longer interval if your API has strict rate limits.
Free plan includes 5 API monitors with custom methods and headers. No credit card required.
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