Session timeline

The Session Timeline gives you a turn-by-turn view of a single OpenClaw agent session. Each row in the chart represents one LLM call (a turn), and colored bars inside it show the LLM latency and each tool call side-by-side. You can expand any turn to read the full user prompt, the assistant’s response, and the raw input/output of every tool that ran.

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KPI strip

At the top of the page, a strip of six metrics summarizes the selected session:

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Selecting a session

Use the session picker below the page title to choose which session to inspect.

• Type any part of a session ID or agent name to filter the list.
• The dropdown shows the full session ID, agent name, primary model, total cost, and end time for each session.
• You can paste a complete UUID directly into the input — the picker will auto-select the matching session.
• Click × to clear the current selection and return to the empty state.

The session ID is also reflected in the page URL (?session=<id>), so you can bookmark or share a direct link to any session.

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The Gantt chart

The chart uses compressed time on its horizontal axis. The axis is divided into 8 evenly spaced tick marks that span the session’s active duration.

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Compressed vs wall-clock time

Idle gaps — periods where the agent was waiting for user input or doing nothing — are collapsed out of the chart. The notice bar above the chart tells you how many gaps were compressed. The Wall duration KPI shows the true elapsed time, while Active time shows the compressed duration used for chart positioning.

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Turns (rows)

Each row represents one assistant turn, labeled S1, S2, and so on. The row label also shows:

• Total tokens for that turn and its cost
• A stop reason pill — see below for what each value means

A gray background bar spans the full turn duration. Inside it:

• A dark gray segment at the left edge represents LLM inference time.
• Colored segments represent individual tool calls, positioned at their actual compressed start time.

Click any row to expand it and see the full turn detail.

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Stop reasons

Each turn ends with one of five stop reasons, shown as a colored pill next to the sequence number:

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Parallel tool calls

When your agent issues multiple tool calls in a single turn, Claw Lens detects this and stacks them in separate horizontal lanes within the same turn row. Each lane represents one parallel execution track. The row height grows automatically to fit all lanes.

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Color legend

The legend above the chart shows a swatch for each tool that appeared in the session. The following built-in tools have fixed colors:

• exec / Bash — amber
• read / Read — green
• write / Write — purple
• edit / Edit — cyan
• web_fetch / WebFetch — orange
• web_search / WebSearch — peach
• sessions_spawn / Agent — pink

Failed tool calls are always shown in red regardless of the tool type.

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Turn detail

Click any turn row to expand its inline detail panel. The panel shows: Timing summary

• Wall-clock start time (offset from session start, with an absolute timestamp)
• LLM inference time
• Number of tool calls and their parallel-aware wall-clock span
• Total turn duration
• Whether parallel execution was detected

Token counts

• Input tokens
• Output tokens
• Cache read tokens (shown in blue when present)
• Cache write tokens (shown in amber when present)
• Turn cost

Stop reason — repeated with a colored pill, plus the parsed error message if the stop reason was error. Message context — the text of the user message that triggered this turn, and the assistant’s text response. These are fetched live from the session log.

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Tool call cards

Each tool call in the turn renders as its own card with a colored left border. The card shows:

• Tool name and target path or URL (when available)
• Duration and success/failure status
• A natural-language summary for common tools (exec, read, write, edit, web_search, web_fetch)
• Arguments — the parsed JSON input the model passed to the tool
• Raw input and raw output — the exact bytes sent and received, pretty-printed if valid JSON

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Navigating from other pages

Several other Claw Lens pages link directly into the Session Timeline with a specific turn pre-selected:

• The Tool Profiler links slow calls to the turn in which they occurred.
• The Deep Turn page links deep turns directly to the timeline with the turn highlighted.

When you arrive via a direct link, the target turn is automatically expanded and highlighted with a blue outline for five seconds.