Add CountWorkers API#729
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Add CountWorkers RPC for counting workers matching a query filter. Follows the same pattern as CountWorkflowExecutions, CountSchedules, and CountActivityExecutions. Made-with: Cursor
This was referenced Mar 11, 2026
yuandrew
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Mar 12, 2026
Sushisource
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Mar 13, 2026
laurakwhit
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Apr 28, 2026
The worker registry counts workers via an in-memory scan, unlike Elasticsearch-backed CountWorkflowExecutions which can return approximate counts. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
# Conflicts: # openapi/openapiv2.json # openapi/openapiv3.yaml
Matches the same field in ListWorkersRequest so count and list behave consistently for system workers. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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What
Add
CountWorkersRPC toWorkflowServicefor counting workers matching a query filter.namespace+query+include_system_workers(same filter fields asListWorkers)int64 countGET /namespaces/{namespace}/worker-countServer PR
Why
The worker UI needs to display a total worker count (e.g. in tabs) without fetching the full list. Follows the established pattern used by
CountWorkflowExecutions,CountSchedules, andCountActivityExecutions.How did you test it?
make ci-build)