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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
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Claude Code v2.1.304 ·

Saving the MCP skill cache file works differently

The step that saves the MCP skill cache file was replaced, and its old "meta.json write failed" error is gone

Under the hood Internal Changes
JSON All of v2.1.304
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.304,
Internal ChangesSection of the release

Unclear It is unclear whether the MCP skill cache still exists or how this replacement changes its behaviour.

What

Claude Code keeps a small cache file called meta.json for skills that come from MCP servers. MCP servers are outside programs that give Claude extra tools. The step that saves this file has been replaced. The new version waits for pending work to finish, and the old "meta.json write failed" error no longer appears.

Why

This may mean the MCP skill cache was reworked or removed.

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 doubtIt is unclear whether the MCP skill cache still exists or how this replacement changes its behaviour.

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