Traces

A trace is a replayable record of a single agent session. Open any session from the Dashboard's recent activity feed, from the Analytics table, or from Projects → Activity to see its full trace.

Token and cost header

At the top of every trace is a summary header showing:

• Input tokens — tokens the agent sent to the model
• Output tokens — tokens the model returned
• Cache tokens — input tokens served from the model's prompt cache (where available)
• Delegated — extra tokens spent inside sub-agents this session spawned, shown as +N and kept separate from the parent's own tokens. Only appears when the session delegated work — see Delegation & sub-agents below.
• Cost — the API-equivalent cost for this session
• Model — the model that handled the session
• Duration — wall-clock time from session start to end

A row of stat pills sits beside the token header — Steps, Tools, Reason (reasoning blocks), Turns, Dur, and Err (errors) — so you can size up a session before scrubbing through it. These numbers come directly from the session log — no estimation.

Five tabs

Events

A timeline of every event in the session in chronological order: the session start, each assistant turn, each tool call and its result, and the session end. Events are color-coded by kind:

• Amber — reasoning / thinking blocks
• Sky blue — tool calls and results
• Emerald — assistant responses
• Default — user turns and system events

Use the Events tab to get an at-a-glance feel for the session structure: how many tool calls, how much reasoning, how much direct output.

Messages

The Messages tab shows the full conversation: user messages, system prompts, and assistant responses in order. This is the raw conversation as the model saw it.

Tools

A focused view of every tool call, grouped by tool name. Each entry shows:

• The tool name (e.g. Bash, Edit, Read, WebSearch)
• The arguments passed
• The result returned
• Timing (time from session start, and duration of the tool call)
• Success or failure

The Tools tab is useful when you want to audit what your agent actually ran — especially for Bash commands, where seeing the exact command and its output is more useful than reading the conversation.

Artifacts

The Artifacts tab shows what the agent created or captured during the session:

• Published pages — hosted artifact pages Claude Code published, linked externally
• Screenshots (from Antigravity or browser automation)
• Browser recording thumbnail strips
• Documents: task.md, plan.md, walkthrough.md, and similar

See Artifacts for more detail on what's captured.

Plans

The Plans tab shows any plan-mode output captured during this session. For Claude Code, this includes the structured plan the agent produced after a /plan command. Plans are shown as formatted text with their timestamp.

Step navigation

The Events tab has a step navigator — forward/back arrows — so you can walk through the session event by event, as if scrubbing through a recording.

Kind-aware highlighting

Each event type has a distinct visual style so the trace is scannable at a glance:

Honest labelling of encrypted reasoning

Claude's extended thinking feature can produce encrypted reasoning blocks — thinking tokens that Anthropic encrypts before including in the session log. TokenTelemetry labels these blocks honestly: "Extended thinking (encrypted — content not available)." It never fabricates or infers reasoning content.

Split-brain view

The Split brain toggle in the header splits the trace into two synchronized columns: User & Agent Dialogue on the left (the conversation as it happened) and Internal Reasoning & Tools on the right (the model's thinking and the tool calls it made alongside it). It separates what the agent said from what it was doing and thinking while it said it. Toggle back to Unified view for the single-stream timeline.

Delegation & sub-agents

Many agents farm work out to sub-agents — Claude Code's Task tool, Hermes' delegate_task, and similar. When a session spawns sub-agents, the trace attributes their token spend and cost back to the parent and lets you drill into each child's own trace.

Delegated token stat

When a session delegated work, the token header gains a Delegated figure (e.g. +429.9k) alongside Input / Output / Cached. This is the token spend that happened inside sub-agents, kept separate from the parent's own tokens so you can see at a glance how much of the session's real cost was farmed out.

Delegated work card

The Delegated work card lists every sub-agent the session spawned. Summary tiles across the top show the sub-agent count, total delegated tokens, cache writes, and delegated cost; each row then breaks down one sub-agent: its type (e.g. general-purpose, Explore), the task it was given, the model it ran on, its input/output and cached tokens, and its cost. Click view on any row to open that sub-agent's full trace.

Sub-agents inspector

The right-hand inspector's Context tab carries a Sub-agents list — the same children in an at-a-glance sidebar. Click one to open its trace in a slide-over without leaving the parent session.

Parent session link

The link works the other way too. Open a sub-agent session on its own and a parent session link appears in its header; clicking it opens the parent trace. Between the two you can walk the full delegation chain from any point — down from a parent into the sub-agents it spawned, or up from a child to the session that spawned it.

Tips

• The Tools tab is the fastest way to see if an agent ran a command you didn't expect — especially useful after a long autonomous session.
• If reasoning blocks look empty, the session used encrypted extended thinking. This is intentional — see the "Honest labelling" note above.
• Use the parent-session link to trace a cost spike back to the root cause: find the expensive sub-agent session, then follow the link up to the parent that spawned it.