{"version":"2.1.323","anchor":"mcp-official-url-registry-always-uses-bff-tengu-mcp-directo","canonical_anchor":"mcp-official-url-registry-always-uses-bff-tengu-mcp-directo","heading":"The list of official MCP server addresses always comes from one service","tier":"internal","area":"MCP","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.323\/e\/mcp-official-url-registry-always-uses-bff-tengu-mcp-directo","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.323","markdown":"### The list of official MCP server addresses always comes from one service\n\nClaude Code always fetches official MCP server addresses from a single service, and an incomplete fetch now keeps none of them\n\n**What**\n\nMCP (Model Context Protocol) servers are add-ons that give Claude extra tools. Claude Code fetches a list of official MCP server web addresses. It used to pick between two ways of fetching that list based on a remote switch. It now always uses the newer way, and the older way has been removed.\n\nIf the fetch fails, Claude Code now records zero addresses. It no longer keeps a partial list.\n\n**Why**\n\nThe newer way of fetching the list is now used for everyone. When the fetch fails, nothing from it is used.\n\n- Flag `tengu_mcp_directory_bff`: Not enough to say (read for one account on one subscription tier against v2.1.323; this account: no value returned, anonymous baseline: no value returned, compiled default: not a boolean we can read) These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.\n- Area: MCP\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 1\/5\n- Scope: individual\n- Heads-up: no"}