settings-local-json-accumulates-uuid-and-session-mcp-permissions
Claude Code’s settings.local.json silently accumulates permission entries for UUID-prefixed Desktop-bridged MCP tools and session-scoped MCP servers (e.g., railway) as the session progresses. These entries violate the no-bloat policy since UUIDs change between Desktop connector activations and session-scoped servers are not permanent. Prune entries matching mcp__