dsh-langfuse: Langfuse LLM observability for DeepSeek Harness — one OpenTelemetry trace tree per agent session, with feedback scores and subagent lineage.

OpenTelemetry Tracing

OpenTelemetry Node SDK provides automatic telemetry (tracing, metrics, etc) for Node.js applications

OpenTelemetry Collector Exporter allows user to send collected traces to the OpenTelemetry Collector using protobuf over HTTP

OpenTelemetry Collector Trace Exporter allows user to send collected traces to the OpenTelemetry Collector

Datadog APM tracing client for JavaScript

Packages @jridgewell/trace-mapping and @jridgewell/gen-mapping into the familiar source-map API

A library to create a trace of your node app per Google's Trace Event format.

OpenTelemetry Web Tracer

Full-stack Langfuse observability for DeepSeek Harness: one OpenTelemetry trace tree per turn, prompt bridge, eval datasets, and a sidebar entry — implemented on the official telemetry seam.

TypeScript definitions for stack-trace

OpenTelemetry Collector Exporter allows user to send collected log records to the OpenTelemetry Collector

Get v8 stack traces as an array of CallSite objects.

Trace the original position through a source map

OpenTelemetry Collector Logs Exporter allows user to send collected logs to the OpenTelemetry Collector

Generate source maps

Structured logging via heimdalljs

An OTLP exporter to send logs using protobuf over HTTP

OpenTelemetry Tracing

OpenTelemetry Collector Metrics Exporter allows user to send collected metrics to the OpenTelemetry Collector using protobuf over HTTP