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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 v2.1.300 ·

New checks for MCP server entries and a new repo rules entry

Claude Code adds codes for MCP server entries with no transport or malformed OAuth scopes, and a new ccs_repo_rules entry

Under the hood Internal Changes
JSON All of v2.1.300
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.300,
Internal ChangesSection of the release

Unclear Whether these codes are shown to you when an MCP server entry is rejected is not clear.

What

MCP servers are outside programs that add tools to Claude Code. Claude Code now has new codes for problems in an MCP server entry:

  • MCP_ENTRY_TRANSPORT_MISSING: the entry does not say how to connect to the server.
  • MCP_ENTRY_OAUTH_SCOPES_LIST: a problem with the list of OAuth scopes, the permissions the server asks for at sign-in.
  • MCP_ENTRY_OAUTH_SCALAR: a problem with a single OAuth value.

A ccs_repo_rules entry was added next to other repository-related entries, and a ccr_upload_stream entry was removed from a nearby list.

Why

These point to checks on MCP server settings set by an organization, and to syncing repository rules.

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 doubtWhether these codes are shown to you when an MCP server entry is rejected is not clear.

See this entry in the whole of v2.1.300 →

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