Welcome to Middleware Docs

Guides, references and cookbooks for collecting metrics, logs, traces and profiles over OpenTelemetry — and for finding the cause once something breaks.

Install an AgentCollect events and metrics from your hostsInstrument a ServiceCapture traces, errors, fix latency & set alertsSet Up IntegrationsFlexibility with 450+ built-in integrationsPlatform & AdministrationLearn more about core features & capabilities
Developer tools:
API ReferenceSDKCLIWebhooksOpsAI MCPError CodesLog Collection

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Infra Agents
KubernetesRun the MW Agent to collect and analyze your Kubernetes infraDockerRun the MW Agent to collect and analyze your Docker infraLinuxRun the MW Agent to collect and analyze your Linux infraView All Our Agents
APM Agents
JavaRun the MW Agent to collect and analyze your Java servicesNodeJSRun the MW Agent to collect and analyze your NodeJS servicesNextJSRun the MW Agent to collect and analyze your NextJS servicesView All SDK
RUM Agents
JavascriptRun the MW Agent to collect and analyze your browser sessionsiOSRun the MW Agent to collect and analyze your iOS sessionsAndroidRun the MW Agent to collect and analyze your Android sessionsView All

Our Products

Every product category is listed here

InfrastructureHosts, Containers, Kubernetes etc.LogsSearch, filter and turn log patterns into metricAPMDistributed tracing, profiling and endpointsRUMBrowser & mobile sessions, replay, error trackSynthetic MonitoringUptime, multistep and global browser testsLLM ObservabilityTrace agents, RAG pipelines, evaluate outputOpsAIIssue detections, resolve, chat with dataDashboardsVisualise telemetry dataAlertsLearn more about core features & capabilitiesDatabase MonitoringCollect events and metrics from your hostsStatus PagesCapture traces, errors, fix latency & set alertsPipeline ControlFlexibility with 450+ built-in integrations

AI powered Observability

Every product category is listed here

OpsAI Issue Detection & ResolveCollect events and metrics from your hostsOpsAI Smart AlertsCapture traces, errors, fix latency & set alertsDashboards with OpsAILearn more about core features & capabilities

Moving from another tool

Keep your existing instrumentation. Change where it ships.

Migrate from DatadogKeep the datadog agent in place, dual ship to both backends during the cutover, then switch destinations when your dashboards are built.Migrate from NewRelicPoint your existing OpenTelemetry exporters at Middleware, or ship through Logstash and Fluent Bit without touching application code.

Moving from another tool? We can help you make the switch. Get in touch

Product Changelog

Published weekly, whether or not the week was interesting.

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20 Aug '26New page: OTel-native filters — dropping attributes at the agent instead of at ingest20 Aug '26Java agent 1.9.2 — profiling defaults changed. Updated environment variable table20 Aug '26New cookbook: evaluate an agent with LLM-as-judge20 Aug '26Rewrote the Kubernetes install page around Helm values

Top Resources

Longer reads from the blog that go past what a doc page covers.

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KnowledgeApplication Dependency Mapping (ADM): A Practical Guide16 min readKnowledgeWhy Observability Migrations Fail (and What Developers Can Do About It)12 min readKnowledgeAWS Lambda Limits: The Complete Guide to Quotas, Hard Limits, and Workarounds12 min readKnowledgeDocker Status: How to Check If Docker Is Down and Fix Common Errors12 min read

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