dsh-session-bridge

DeepSeek Harness sessions lack a native mechanism for cross-session messaging or orchestration. Agents cannot spawn peer sessions, dispatch prompts to them, or inspect their run state without external tooling. dsh-session-bridge closes that gap by wrapping the harness's built-in session and agent services into model-facing tools, turning inter-session collaboration into a first-class capability.

Three tools are exposed: session_create spins up an ordinary session in the caller's workspace and inherits the current composition configuration; session_send delivers a prompt to any ordinary session by id, offering both queue (next-turn FIFO) and interrupt (next-step boundary) delivery modes with automatic cold-session resume; session_list enumerates ordinary sessions along with their running state. All tools register globally in the web profile, independent of any agent preset, so every session can invoke them directly.

The plugin suits agent workflows that require task fan-out, parallel orchestration, or cross-session status aggregation. A lead agent can delegate sub-tasks to multiple peer sessions and collect results without manual intervention. Every cross-session message carries a plugin provenance tag for traceability and auditing, making it easy to attribute who initiated what action.