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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.221 ·

/mcp status surfaces cached servers

The /mcp view now counts cached servers separately so you can tell them from live connections.

You'll notice New Features
JSON All of v2.1.221
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
MCPArea: what it touches
New FeaturesKind: in v2.1.221,
New FeaturesSection of the release
What

Cached MCP servers are now counted and reported as their own state in the inline /mcp summary, the MCP dialog, and the SDK wait-for-servers result.

Details
  • The inline /mcp summary line counts cached servers separately, assembling a string containing the fixed fragment ${A} cached, .
  • The dialog status mapper returns "cached" for cached entries.
  • The control/SDK "wait for MCP servers" result schema gained an optional cached: w.array(w.string()).optional() list alongside connected, failed, stillPending, needsAuth and disabled.
  • Only meaningful on the MCP discovery cache path (tengu_mcp_discovery_cache); without cached entries the counts read as before.
Evidence

if (Yt.type === "cached") return "cached";

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

Read from
Names in the bundle/mcp
Feature flag
tengu_mcp_discovery_cache Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.221: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.221. It isn't a statement about your account. What a flag value here can and cannot tell you

How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: tengu_mcp_discovery_cache

See this entry in the whole of v2.1.221 →

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