Prompt
What should I use to monitor APIs in real time?
Latest observation
Oct 5, 2026
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For real-time API monitoring, you typically want a combination of APM + logs + synthetic checks + alerting. What to use depends on whether you need technical monitoring, business/API usage monitoring, or both.
Good options by use case
1) Full observability / production monitoring
Use these if you want live visibility into latency, errors, throughput, traces, and logs:
- Datadog — very strong all-around, easy dashboards/alerts, excellent API/service monitoring
- New Relic — good APM and real-time telemetry
- Dynatrace — powerful enterprise monitoring with automation
- Grafana stack
- Prometheus for metrics
- Grafana for dashboards
- Loki for logs
- Tempo/Jaeger for traces
2) Lightweight real-time API checks
Use these if you mainly want uptime, response time, and failure alerts:
- Pingdom
- Better Stack (Better Uptime)
- UptimeRobot
- StatusCake
3) API testing/monitoring from outside your infrastructure
Use these for synthetic “customer-like” monitoring of endpoints:
- Postman Monitors
- Runscope (legacy but conceptually in this category)
- Checkly — great for API + browser synthetic monitoring
- Assertible
4) Cloud-native monitoring
If you’re already on a cloud platform:
- AWS CloudWatch + X-Ray
- Azure Monitor + Application Insights
- Google Cloud Operations Suite
What I’d recommend
- For most teams: Datadog or Grafana + Prometheus + Loki
- For simple uptime/latency alerts: Better Stack or Pingdom
- For API contract/synthetic monitoring: Checkly or Postman Monitors
What to monitor in real time
At minimum:
- Availability (is the API up?)
- Latency (p50/p95/p99)
- Error rate (4xx/5xx)
- Throughput / RPS
- Auth failures
- Dependency failures (DB, cache, upstream APIs)
- Specific endpoint health
Quick recommendation by team size
- Small team/startup: Better Stack + Postman Monitors
- Growing product team: Datadog or New Relic
- Platform/DevOps-heavy org: Prometheus + Grafana + Loki + Alertmanager
If you tell me your stack (cloud provider, language, traffic level, budget), I can suggest the best specific tool/setup.