Developer-First API Monitoring

Validate Payloads.
Not Just Status.

Deep endpoint monitoring with JSON assertions, header validation, and global latency tracking. Ensure your production APIs return exactly what your frontend expects.

Start Monitoring FreeExplore Features
POST /v1/checkout
Request Assertions
status_code === 201
body.order_id exists
latency < 200ms
// Response Body
{
"success": true,
"order_id": "ord_8271",
"total": 42.00
}

What is Monitor Hub API Monitoring?

Monitor Hub API Monitoring is an advanced endpoint validation tool that goes beyond simple uptime checks. It executes deep JSON payload assertions, validates HTTP headers, matches regex patterns, and tracks global latency percentiles to ensure your REST and GraphQL APIs function exactly as expected.

FeatureMonitor HubBasic Ping Tools
Uptime Verification Yes (HTTP 200)Yes (HTTP 200)
JSON Payload Validation JSONPath & Regex AssertionsNo
Performance Metrics P95/P99 Global Latency TrackingBasic response time
Supported Methods GET, POST, PUT, DELETE, PATCHMostly GET

JSON Assertions

Validate specific fields, data types, and values in your JSON responses.

Header Validation

Ensure security headers and content-types are correctly set.

Latency Alerts

Get notified if your API slows down, even if it stays &quot;up&quot;.

Global Edge

Monitor performance from 15+ edge locations simultaneously.

Deep Validation

Validate your
Business Logic.

An HTTP 200 status code only means the server is there. Monitor Hub goes deeper by asserting that your API actually returned the correct data structure and values.

Schema Enforcement
Ensure response bodies follow your expected JSON schema.
Content-Type Matching
Verify headers like application/json or text/xml are set.
JSONPath Target Assertions
Target deeply nested properties (e.g. $.data.users[0].role) and match expected values.
Regex Response Matching
Assert that the response payload string matches a specific regular expression pattern.
ASSERT
response.body
EXPECT.status_codeTO_BE_IN"200-299, 302"
EXPECT.bodyJSONPATH"$.user.role" === "admin"
EXPECT.bodyREGEXP_TEST"/^[a-z0-9_-]{3,16}$/"
EXPECT.headers['server']TO_MATCH"nginx"
SSRF PROTECTION ENGINE
PROBE target: http://169.254.169.254/latest/meta-data/
[!] WARNING: Local IP range lookup detected.
[!] BLOCKED: SSRF loopback safety filter triggered.
[✓] Check Aborted safely. Status: 403 Forbidden.
Security & Isolation

Secure Probing.
No Internal Exploit.

We prevent malicious agents or shared accounts from mapping your private cloud networks. Our custom DNS resolution layer automatically drops requests trying to resolve loopbacks or cloud metadata addresses (AWS, GCP, Azure).

SSRF Loopback Block
Restricts outbound checking to public routes. No internal subnet scanning.
Global IP Whitelist
Access our dedicated whitelisted IPs to secure your API endpoints.

Performance is a
Feature.

Slow APIs are just as bad as down APIs. Track latency percentiles (P95, P99) across all your endpoints and get alerted on performance regressions.

42ms
Average P95 Latency

API Monitoring
FAQs.

How is API monitoring different from Uptime monitoring?

Uptime monitoring usually only checks if a server responds (ping/HTTP 200). API monitoring validates that the returned data is correct, the latency is within limits, and the headers are secure.

Can I monitor POST or PUT requests?

Absolutely. Monitor Hub supports all standard HTTP methods (GET, POST, PUT, DELETE, PATCH, OPTIONS). You can also configure request bodies, headers, and query parameters.

What are JSON assertions?

JSON assertions allow you to define rules that the response body must follow. For example, you can assert that a 'success' field is true, or that an 'id' field is a valid UUID.

Does Monitor Hub support global latency tracking?

Yes. We track response times from 15+ global locations simultaneously, allowing you to see how your API performs for users in different regions.

Knowledge Base

Latest Articles.

Debug less.
Monitor more.

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