API Monitoring, Error Tracking & Live Request Logs
Monitor every API request, error and console line, plus the web app that calls it. Failures group into issues, and your API keeps serving if Midline is down.
What Midline does
- API Monitoring and Request Logging: Monitor every API request without slowing it down: method, route, status and timing, live error rate and p95 latency, and it keeps serving if Midline is down.
- Error Tracking for APIs and Web Apps: Midline groups API errors, security events and 5xx responses into issues, reopens them when they return, and emails owners and admins about new ones.
- Node.js, Express and NestJS API Monitoring: Add Midline to an Express, NestJS or Node.js API with one npm package and a middleware: request logs, errors and console output, with secrets masked.
- Frontend Error Monitoring and Web Vitals: Track uncaught JavaScript errors, failed fetch calls and Web Vitals (LCP, INP, CLS) from real visitors in React, Vue, Angular and Next.js.
- Real-Time API Logs and Server Console Capture: Watch API requests, errors and server console output arrive live in one filterable stream, with history searchable back up to 30 days.
- Monitor Python, Go, Java, PHP, Ruby and .NET APIs: Midline is not tied to Node.js. Put the proxy in front of any API, or post events over HTTP from Django, FastAPI, Go, Java, PHP, Rails or .NET.