{"version":"2.1.221","anchor":"mcp-server-details-show-the-negotiated-protocol-version","canonical_anchor":"mcp-server-details-show-the-negotiated-protocol-version","heading":"MCP server details show the negotiated protocol version","tier":"use","area":"MCP","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.221\/e\/mcp-server-details-show-the-negotiated-protocol-version","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.221","markdown":"### MCP server details show the negotiated protocol version\n\nMCP server details now show the protocol version negotiated with each connected server.\n\n**What**\n\nThe remote\/HTTP and stdio server detail panels now display which MCP protocol version was agreed with the server.\n\n**Details**\n\n- Adds a \"Protocol:\" row to both detail panels.\n- Shown only when the client is connected, its `protocolEra` is \"modern\", and a `negotiatedProtocolVersion` is present.\n- Hidden in every other case, including legacy-era clients.\n\n**Evidence**\n\n`\"Protocol:\"`\n\n- Area: MCP\n- Names: `\/mcp`\n- Tier: Use it now\n- Useful: 3\/5\n- Signal: 0\/5"}