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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.221 ·

MCP skills funnel telemetry

Skills fetched from MCP servers now report extra usage stats back to Anthropic.

Under the hood Internal Changes
JSON All of v2.1.221
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.221,
Internal ChangesSection of the release
What

Fetching skills from an MCP server now reports two points in the funnel.

Details
  • Events fire at "parsed_nonempty" and "surfaced".
  • Each is tagged with the server name and skill count.
  • A cause of "initial" or "refetch" is tracked per server plus config key.
Evidence

tengu_mcp_skills_funnel

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.221 →

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