Agent Instance Activity

The Activity tab shows the spans produced during a single agent instance.

Instance header

• Status – Complete, Active, or Pending.
• Duration and timestamps – total run time and start/end times.
• Registered / Last updated – when Prefactor first recorded this instance and when it last changed.
• Activity over last 24 hours – span state breakdown for this instance.

Tabs

• Activity – span list for this run (this page).
• Details – instance metadata (agent, version, timestamps, status).

Spans

Each row in the activity list represents one span. Columns:

• Span name – for example, ai-sdk:llm or ai-sdk:tool.
• Duration – how long the span took.
• Timestamps – start and end times.
• Status – Complete, Failed, etc.
• View – opens the span detail page.

The footer shows the total number of spans in the instance.

Span detail

Selecting View on a span opens the span detail page, which shows:

• Inputs and outputs.
• The structured payload as defined by the agent’s activity schema.
• Nested child spans, if any.