Midline Features Pricing Documentation How-to guides API Monitoring and Request Logging Error Tracking for APIs and Web Apps Node.js, Express and NestJS API Monitoring Frontend Error Monitoring and Web Vitals Real-Time API Logs and Server Console Capture Monitor Python, Go, Java, PHP, Ruby and .NET APIs About Contact Privacy

Browser SDK: Error and Web Vitals Monitoring

Add midline-agent/browser to React, Vue, Angular, Svelte or Next.js to capture uncaught errors, failed fetch calls and Web Vitals with an origin-locked key.

Documentation

Quick Start: Monitor an API in Five Minutes
Authentication: API Keys and Bearer Tokens
Node.js Agent: Express and NestJS Monitoring
Browser SDK: Error and Web Vitals Monitoring
Ingest API: Send Events Over HTTP
Other Backends: Python, Go, Java, PHP, Ruby, .NET
Realtime Socket: Stream Live Events
Querying Logs: Search, Filter and Paginate
Dashboard API: Traffic Stats and Metrics
Projects and Stacks
API Keys: Create, Rotate and Restrict
Traffic Control: Rules to Log, Allow or Block