Changelog

Platform toolset routing and hook telemetry attribution

This patch release moves assistant platform toolsets onto the

path prefix, makes hook telemetry filterable in Datadog by org, project, source, and event, and fixes the Codex Stop hook in Cowork.

Bug fixes

• Platform toolsets at
  #2823  - Assistant platform toolsets are now served from
  instead of
  , in line with the
  prefix for MCP servers. (Author: @danielkov )
• Dedupe chat asset writes #2839  - Dedupes chat asset writes and idempotently uploads to prevent GCS 429s. (Author: @bflad )
• Structured hook telemetry attributes #2838  - Makes hook routes (Claude, Cursor, Codex, OTEL Logs, OTEL Metrics) filterable in Datadog by
  ,
  ,
  , and
  . Replaces nested
  payloads with top-level slog attrs and logs on every early-return path so silent 401s and missing-session-id branches are visible when debugging hook setup. (Author: @bradcypert )
• Codex Stop hook in Cowork #2842  - Gets the Stop hook working in Cowork again. (Author: @chase-crumbaugh )