{"version":"2.1.234","anchor":"sending-files-and-messages-to-other-sessions-fails-early-on-","canonical_anchor":"sending-files-and-messages-to-other-sessions-fails-early-on-","heading":"Sending files and messages to other sessions fails early on unreachable targets","tier":"notice","area":"Session Messaging","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.234\/e\/sending-files-and-messages-to-other-sessions-fails-early-on-","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.234","markdown":"### Sending files and messages to other sessions fails early on unreachable targets\n\nSending a file or message to an unreachable session is denied while asking permission, not silently at send time.\n\n**What**\n\nSendFile and SendMessage now work out which session you are aiming at while asking for permission, rather than at send time, and deny outright when the target is a Remote Control session that a cloud session cannot reach. If working out the target throws, you get an ask that says so instead of the send quietly proceeding.\n\n**Details**\n\n- The resolved target is cached against the tool call, so the permission answer and the send agree.\n- When peer machines are kept separate, the SendFile prompt now always includes the warning that file contents travel via Anthropic's servers to another machine.\n\n**Evidence**\n\n`If the recipient is a Remote Control or cloud session, the file contents travel via Anthropic's servers to another machine.`\n\n- Area: Session Messaging\n- Tier: You'll notice\n- Useful: 3\/5\n- Signal: 2\/5"}