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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 v2.1.257 ·

New tengu_tool_schema_sizes telemetry event with dedup cache

A new event breaks down tool schema sizes by category, deduplicated and capped at 512 hashes.

TierUnder the hoodhow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaTelemetrywhat it touches
KindInternal Changesin v2.1.257,
Under the hood No documentation found

A new event breaks down tool schema sizes by category, deduplicated and capped at 512 hashes.

API-success telemetry now emits a separate tengu_tool_schema_sizes event that breaks down tool schema character lengths by category (static, mcp_tool, skill_tool, other), deduplicated and capped at 512 distinct hashes. The existing tengu_api_success event also gains a new requestPrefixTelemetry block.

See this entry in the whole of v2.1.257 →

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