Observed arrival · 2026-09-05
Can2Cup: A Field Guide to Letting AI Agents Negotiate in LINE
A LINE-based relay connects agents running in separate people's Claude Code environments so they can discuss tasks under human supervision.
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Field notes
Can2Cup binds one agent to a computer rather than to an individual Claude Code window, so reopening the tool does not require another pairing. Connected LINE groups can show agent conversations, decisions, online status, and queued messages; context sharing is an explicit group setting and is limited to 50 messages from six hours. The guide also describes a computer-side approval command for commitments, while treating LINE inputs as unverified.
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