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What it is

Items are the bridge between your data and your annotation workflow. Each item links a source — a trace, span, session, dataset row, prototype run, or simulation call — to a queue. When you add items to a queue, annotators can review the source content and apply the queue’s labels.

Supported source types

Source TypeWhere to findDescription
TraceObserve > TracesFull LLM trace with input, output, metadata, latency, tokens, and cost
Observation SpanObserve > Trace detail > specific spanAn individual span within a trace
SessionObserve > SessionsA conversation session (group of related traces)
Dataset RowDatasets > select datasetAn individual row in a dataset
Prototype RunPrototype > execution historyA prototype experiment run
Simulation CallSimulation > call logsA simulated voice or text call execution

How to add items from Observe

1

Open Traces view

Go to your Observe project and open the Traces view.
2

Select traces

Use the checkboxes to select one or more traces you want to annotate.
3

Click Add to Queue

Click the Add to Queue button in the toolbar. A dialog opens where you can search for and select the target queue.
4

Confirm and add

Select the queue and click Add. The selected traces appear as items in the queue’s Items tab with a Pending status.

How to add from other sources

The flow is the same across all source types:
  • Datasets — Navigate to a dataset, select rows using checkboxes, and click Add to Queue.
  • Sessions — Open Observe > Sessions, select sessions, and click Add to Queue.
  • Prototyping — Open a prototype’s execution history, select runs, and click Add to Queue.
  • Simulation — Open simulation call logs, select calls, and click Add to Queue.

Managing items in a queue

Open a queue’s detail page and go to the Items tab to see all items and their statuses. Queue items

Filtering items

  • By status — Filter by Pending, In Progress, Completed, or Skipped.
  • By source type — Show only items from a specific source (e.g., traces only).
  • My Items — Toggle to see only items assigned to you.

Removing items

  • Select one or more items using checkboxes and click Remove Selected.
  • Or click the x button on an individual row to remove a single item.

Bulk operations

Use the select-all checkbox to select all visible items, then apply bulk actions like remove.
Duplicate items are silently skipped. If a source is already in the queue, adding it again has no effect. The response shows how many items were added versus how many were duplicates.
For large-scale annotation campaigns, use the SDK to programmatically add items to queues. See the Python SDK or JavaScript SDK guide.

Next steps

Annotate Items

Start annotating items in the annotation workspace.

Queues Concept

Understand how queue items flow through statuses and assignment.

Items API

Add items programmatically via the REST API.