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Core observability package for Mastra - includes tracing and scoring features
Workflow Observability UI
Browser observability for your web app. Capture frontend metrics, errors, logs, and traces.
(Meta)observability for EventEmitters.
Datadog LLM Observability exporter for Mastra - exports tracing data to Datadog's LLM Observability product
MCP Server for GCP environment for interacting with various Observability APIs.
Braintrust observability provider for Mastra - includes tracing and future observability features
Langsmith observability provider for Mastra - includes tracing and future observability features
Provides a common interface for app and platform observability
PostHog observability provider for Mastra
OpenTelemetry observability bridge for Mastra
AIGNE Observability for tracing and observability
O11y Client-Side Instrumentation & Observability Library
Client library to connect to the LangSmith Observability and Evaluation Platform.
Langfuse observability provider for Mastra - uses official Langfuse v5 SDK
DXOS app framework plugin for hooking up app observability
Publish metrics from your Artillery.io tests to external monitoring & observability systems
Structured observability for LLM requests — OpenTelemetry metrics + Pino logging.
Microsoft Agent 365 observability adapter for @cuylabs/agent-core
Arize observability provider for Mastra - includes tracing and future observability features
Sentry AI observability exporter for Mastra
Session recorder for Splunk Observability
DXOS app framework plugin for hooking up app observability
Experimental tracing ideas
A thread-safe, async-compatible observable property implementation for Rust using Tokio
iNaturalist API bindings
A thread-safe observable property implementation for Rust
Observer
Reactive Extensions for the Bevy game engine
Observing and serializing mutations
Observing and serializing mutations
Rust Spectral Colorimetry library with JavaScript/WASM interfaces
Observability and tracing abstraction for Praxis AI agents
DSFB Structural Semiotics Calculus — typed residual sign framework, grammar FSM, endoductive operator, and provenance engine. Rust type-level realization of the DSSC formal calculus (Invariant Forge LLC, April 2026).
Runtime Agnostic Reactive Extensions
Observability is a toolkit for instrumenting code to make it more observable. It follows the principle of Observability-Oriented Design as expressed by Charity Majors (@mipsytipsy).
Description of ZuoraObservability.
Meta-gem that installs minato_logger and minato-trace together, providing structured JSON logging and OpenTelemetry distributed tracing with automatic GCP log-trace correlation.
This is the simple REST client for Observability API V1. Simple REST clients are Ruby client libraries that provide access to Google services via their HTTP REST API endpoints. These libraries are generated and updated automatically based on the discovery documents published by the service, and they handle most concerns such as authentication, pagination, retry, timeouts, and logging. You can use this client to access the Observability API, but note that some services may provide a separate modern client that is easier to use.
OpenTelemetry-based observability instrumentation for the LaunchDarkly Ruby SDK. Works with Rails, Sinatra, and any Rack-compatible framework.
Rails observer (removed from core in Rails 4.0)
Implementation of the Observer object-oriented design pattern.
Observer pattern for ruby
Official AWS Ruby gem for CloudWatch Observability Access Manager. This gem is part of the AWS SDK for Ruby.
DataMapper plugin for observing Resources
Official AWS Ruby gem for CloudWatch Observability Admin Service. This gem is part of the AWS SDK for Ruby.
In-process telemetry based on observers
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