dsh-interconnect

dsh-interconnect is designed for multi-instance collaboration in DeepSeek Harness. It addresses the problem of how separate DSH instances discover each other, stay reachable, and exchange messages. Using persistent WebSocket links, it allows one instance to send messages to another instance on the same machine or a remote machine, probe liveness, and push events bidirectionally, making it suitable for cross-session and cross-device agent workflows.
The plugin is composed of three parts: interconnect provides the underlying messaging and event service, tool-interconnect exposes send, list, ping, and reply capabilities to the model, and skill-interconnect teaches the model how to use those tools correctly. With instanceId-based addressing, senders do not need to repeatedly provide complex addresses, and receivers can reply directly based on the recorded sender identity, enabling more natural multi-turn communication across instances.
This plugin is useful when you want multiple DSH instances to talk to each other, resume offline sessions, deliver real-time events, or let agents proactively contact another instance. It is especially suitable for distributed assistants, cross-machine collaboration, and automation workflows that depend on event notifications and bidirectional messaging.