Beautiful local traces, zero config. One command gives you a full OpenTelemetry trace viewer for Claude Code, Codex, and every AI coding tool.
$ npx dd-traces
DD Traces v0.1.0 - Local OpenTelemetry viewer
Collector listening on :4318 (HTTP) and :4317 (gRPC)
Web UI ready at http://localhost:6006
> Trace received claude-code session #a4f2 - 23 spans, 4.2s, 12,847 tokens
> Trace received codex session #b1c9 - 8 spans, 1.1s, 3,201 tokens
> Error span tool:bash failed (exit code 1) in session #a4f2
Auto-detects traces from your favorite tools. No plugins, no extensions, no SDK changes.
Claude Code
Anthropic CLI
Codex
OpenAI CLI
OpenCode
Open source
Cursor
AI editor
Built for developers who want to see exactly what happened, not just the final output.
Waterfall view of every tool call, file edit, and command your agent ran. See the full picture at a glance.
Click any span to see inputs, outputs, duration, and token usage. Understand exactly what happened and why.
Per-span and per-trace token counts with cost estimates. Know what your agent sessions actually cost.
Visual graph of how your agent calls tools, APIs, and services. See the architecture of every session.
Failed spans jump out in red. Drill into errors instantly instead of scrolling through terminal output.
Track duration, cost, and success rates across sessions. Spot patterns in your agent workflows.
No accounts. No cloud. No config files. Everything runs on your machine.
npx dd-traces starts a local collector and web UI. No accounts, no cloud, no config files.
DD Traces auto-detects Claude Code, Codex, and other tools. Just use them like normal.
Open localhost:6006 and watch traces flow in real-time. Every tool call, every file edit, every token.
DD Traces speaks OpenTelemetry. If your app or agent emits OTLP traces, they show up automatically.
One command to see everything your AI agents do. Local, fast, and free forever.
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Engineers who stopped guessing and started tracing.
“npx dd-traces and I could see exactly what my AI agent was doing. Zero config, actually works.”
Chris M.
Backend Developer
“LangSmith is great but DD Traces is what I use locally. The waterfall view is chef's kiss.”
Sam P.
AI Platform Engineer
“The cost tracking per span saved us $200/month by identifying wasteful LLM calls.”
Dana K.
Tech Lead