LLM tracing SDK for auix — AI SDK middleware + manual tracing

Langfuse observability plugin for OpenCode - LLM tracing, prompt versioning, and cost tracking

Agentic development kit — LLM tracing, tool management, and agent primitives

CLI for self-hosting Lightrace — LLM tracing and observability

Langfuse instrumentation methods based on OpenTelemetry

Framework-agnostic agent observability & LLM tracing. Supports OpenAI, CrewAI, AutoGen, LangGraph, and OpenTelemetry.

Node.js SDK for Illuma Observability - LLM tracing and analytics

Core functions and utilities for Langfuse packages

Langfuse OpenTelemetry export helpers

Langfuse API client for universal JavaScript environments

This package provides OpenInference semantic conventions for tracing of LLM Applications.

OpenTelemetry Tracing

Sentry Internal Tracing Package

Langfuse observability plugin for OpenCode - LLM tracing and cost tracking via OpenTelemetry

Embeddable LLM tracing for TypeScript apps. Your database, your deployment, your UI.

Bloop error reporting and LLM tracing SDK for TypeScript/Node.js

Provides low-level interfaces and helper methods for tracing in Azure SDK

Two-line LLM tracing for Verica: init(token) and your OpenAI/Anthropic calls land as evaluable traces.

Datadog APM tracing client for JavaScript

Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.