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README.md

06 — Production Tracing

Trace LLM calls in production with the AgentMark SDK and OpenTelemetry.

The code

index.ts shows how to initialize the SDK, wrap LLM calls in traces, and use child spans for sub-operations. Every traced call is recorded with model, tokens, cost, and latency.

Setup

npm install @agentmark-ai/sdk @agentmark-ai/ai-sdk-v5-adapter

Set environment variables:

AGENTMARK_API_KEY=your-api-key
AGENTMARK_APP_ID=your-app-id

Run it

npx tsx index.ts

What to notice

  • sdk.initTracing() starts the OpenTelemetry exporter — all traces are sent to AgentMark Cloud
  • trace() creates a root span. The callback receives a TraceContext with traceId, spanId, and span() for nesting
  • Child spans (via ctx.span()) let you trace sub-operations like database calls or post-processing
  • The traceId is returned immediately — use it to link traces to your application logs
  • Traces are viewable locally (via agentmark dev) or in AgentMark Cloud