{"version":"2.1.251","anchor":"sendmessage-can-deliver-to-claude-desktop-sessions","canonical_anchor":"sendmessage-can-deliver-to-claude-desktop-sessions","heading":"SendMessage can deliver to Claude Desktop sessions","tier":"use","area":"Messaging","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251\/e\/sendmessage-can-deliver-to-claude-desktop-sessions","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251","markdown":"### SendMessage can deliver to Claude Desktop sessions\n\nSendMessage can now deliver plain text to Claude Desktop sessions.\n\n**What**\n\nSendMessage now recognises targets that look like Claude Desktop session ids and delivers plain-text messages to them through Claude Desktop itself, alongside the existing local-socket and remote-bridge delivery paths.\n\n**Details**\n\n- Requires Claude Desktop's own session messaging tool to be present in the session; without it the send fails as not reachable, with the message quoted below.\n- Has its own guards for empty messages and for \"hop loops\", where agents keep messaging each other automatically, separate from the guards on the other delivery paths.\n\n**Evidence**\n\n`Claude Desktop's session messaging tool is not available in this session, so SendMessage cannot deliver to it`\n\n- Area: Messaging\n- Names: `SendMessage`\n- Tier: Use it now\n- Useful: 3\/5\n- Signal: 4\/5"}