{"version":"2.1.318","anchor":"mcp-tool-added-message-emptied","canonical_anchor":"mcp-tool-added-message-emptied","heading":"Claude is no longer told an MCP server's tools are available after it connects","tier":"notice","area":"MCP","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.318\/e\/mcp-tool-added-message-emptied","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.318","markdown":"### Claude is no longer told an MCP server's tools are available after it connects\n\nThe note telling Claude that an MCP server's tools should now be available is now empty, so Claude no longer sees it\n\n**What**\n\nMCP servers are outside programs that give Claude Code extra tools. Claude Code used to pass Claude a short note saying \"The server's tools should now be available.\" once a server's tools were added. That note is now empty, so Claude no longer receives it.\n\n**Why**\n\nAfter a server reconnects, Claude no longer gets this hint that the server's tools are ready to use.\n\n- Area: MCP\n- Tier: You'll notice\n- Useful: 1\/5\n- Signal: 1\/5\n- Scope: individual\n- Heads-up: no"}