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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.274 ·

MCP server 'source' attribution (sdk / plugin / config scope) added to schemas

MCP server status now reports where each server definition came from

TierUnder the hoodhow much it should matter to you
Useful2my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaMCPwhat it touches
KindInternal Changesin v2.1.274,
Under the hood

MCP server status now reports where each server definition came from

What

MCP (Model Context Protocol) server status information now includes an optional source field, showing whether a given server was registered in-process via the SDK, came from a plugin, or came from a config scope such as user, project, local, dynamic, managed, enterprise, claudeai, or agent. This is computed internally from the server's metadata and exposed on mcp_servers status entries.

Why

This lets you (or tools reading this status) tell where an MCP server definition actually originated, rather than relying on its name alone, which is useful when the same server name could be defined in more than one place.

See this entry in the whole of v2.1.274 →

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