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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
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Claude Code v2.0.10 ·

Environment Variable Parsing for MCP Commands

Entry
JSON All of v2.0.10
EntryKind: in v2.0.10,
ChangesSection of the release

What changed: Enhanced validation of environment variable formats in claude mcp add command

Details:

  • New OI6() function validates KEY=value format using regex /^[A-Za-z_][A-Za-z0-9_]*=/
  • Validates variable names start with letter or underscore
  • Variable names can contain letters, numbers, and underscores
  • Prevents malformed environment variables from being added to MCP server configurations
  • Evidence: OI6() at line 386305 in v2.0.10 (did not exist in v2.0.9)

See this entry in the whole of v2.0.10 →

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