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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.277 ·

New telemetry event names added

Six new internal telemetry event names appeared, hinting at features in progress

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaTelemetrywhat it touches
KindInternal Changesin v2.1.277,
Under the hood

Six new internal telemetry event names appeared, hinting at features in progress

What

Several new event identifiers were added to Claude Code's internal telemetry event list:

  • mermaid_render
  • query_tool_detach
  • bridge_cancel_queued_message
  • device_mcp_host_consent
  • ccr_dir_sync_attach
  • usage_limit_grace_wrapup_subagent
Why

These are just event names added to internal tracking, so no user-facing behavior is confirmed yet, but they hint at work in progress around rendering diagrams, detaching a query tool, canceling queued bridge messages, MCP host consent on devices, directory-sync attachment, and a grace period around usage limits involving subagents.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtNone of these event names are tied to any described user-facing feature yet.

See this entry in the whole of v2.1.277 →

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