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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 v2.1.219 ·

MCP config warns about stray whitespace in values

MCP config now warns when a value has stray leading or trailing whitespace instead of silently using it.

You'll notice Improvements
JSON All of v2.1.219
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
ImprovementsKind: in v2.1.219,
ImprovementsSection of the release
What

Loading MCP server entries now warns when a value has leading or trailing whitespace, naming the fields involved, because the values are used exactly as written.

Details
  • the warning tells you to strip the whitespace rather than doing it for you
  • reserved-name rejections now carry a machine-readable reserved_name code alongside the existing message
Evidence

Leading or trailing whitespace in:

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

See this entry in the whole of v2.1.219 →

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