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Observe

See every step an agent took, and what it cost

Send traces from any agent. See each model call, tool call and action with its time and cost, next to the review it needed.

app.xevrion.co.uk / traces / t_9a41Example data

refund-agent run

3.2 s · £0.04
  • model.call plan1.1 s£0.02
  • tool.call orders.get0.3 s£0
  • model.call decide1.4 s£0.02
  • action refund.issueNeeds 2 reviewersReview

Linked review

Request
r_01HX9
Decided
Approved
Prompt
refund-triage v14
Loops caught2This week
Median run3.4 s
Cost per run£0.04

Why it matters

What agent tracing changes

  • Send traces from any agent.
  • See each model call, tool call and action.
  • Time and cost sit beside the review it needed.
  • You cannot see what an agent actually did.
  • Cost shows up later, as a bill.
  • A bad run is hard to trace back.

The resultSee every step, and what it cost.

What you get

Agent tracing, in practice

  • Works with what you use

    Send OpenTelemetry data, or use the SDK. No new agent framework to learn.

  • Time and cost per step

    You enter your own model prices, so the cost is yours. Steps with no price are shown as unpriced, never guessed.

  • Loops caught

    An agent that repeats the same call again and again is flagged.

  • From trace to decision

    Open a review and jump to the run that raised it.

How it works

Step by step

  1. 1

    Send a trace

    From your agent, in a few lines.

  2. 2

    Read the waterfall

    Each step on a timeline.

  3. 3

    Check cost and speed

    Per model, per tool, per hour.

  4. 4

    Follow it to the review

    See who decided, and why.

Questions

About agent tracing

Do I have to use your SDK?

No. Any tool that sends OpenTelemetry can send traces. The SDK is there to make it shorter.

Do you know my model prices?

No. You enter them, so the numbers match your contract.

How long are traces kept?

14 days on Free, 30 on Starter, 90 on Pro and 365 on Enterprise.

Know what your agents did.

Start free. Guard your first agent in a few minutes, and keep a record anyone can check.

  • Free plan, no card
  • Signed, chained decisions
  • Checked offline, without us