Monitoring changedmonitoring-usage
Nearest release: v2.1.299, published 2 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 14 Oct 2026 02:36 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 14 Oct 2026 02:37 UTC.
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596596* `prompt.id`: UUID correlating a user prompt with all subsequent events until the next prompt. See [Event correlation attributes](#event-correlation-attributes).
597597* `workspace.host_paths`: host workspace directories selected in the desktop app, as a string array
598* `workflow.run_id`: run identifier, prefixed `wf_`, on the API and tool events emitted by agents that belong to a [Workflow](/docs/en/workflows) tool run. Filtering events by one `workflow.run_id` reconstructs that run's API requests and tool results. The identifier covers the agents the workflow script spawns and any agents those spawn in turn, such as skill invocations. It matches the run identifier reported in the Workflow tool result. Absent on all other events. Requires Claude Code v2.1.202 or later
599* `workflow.name`: name of the workflow, its script's `meta.name`, emitted alongside `workflow.run_id`. Built-in workflow names appear verbatim when the run executes the unmodified built-in script. User-authored names, including edited copies of built-in scripts, are replaced with `custom` unless `OTEL_LOG_TOOL_DETAILS=1` is set. Requires Claude Code v2.1.202 or later
598* `workflow.run_id`: run identifier, prefixed `wf_`, on the API and tool events emitted by agents that belong to a [Workflow](/docs/en/workflows) tool run. Filtering events by one `workflow.run_id` reconstructs that run's API requests and tool results. The identifier covers the agents the workflow script spawns and any agents those spawn in turn, such as skill invocations. It matches the run identifier reported in the Workflow tool result. Absent on all other events.
599* `workflow.name`: name of the workflow, its script's `meta.name`, emitted alongside `workflow.run_id`. Built-in workflow names appear verbatim when the run executes the unmodified built-in script. User-authored names, including edited copies of built-in scripts, are replaced with `custom` unless `OTEL_LOG_TOOL_DETAILS=1` is set.
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601601#### Repository attributes
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