dsh-x-opencode-session

When you route model calls through an opencode.ai gateway such as OpenCode Go or Zen, the server relies on the x-opencode-session request header to identify and correlate conversations. Managing that header by hand is tedious and error-prone: the value must stay consistent across all requests within a single conversation, differ between conversations, and survive network drops, service restarts, and resumed chats without any intervention.

This plugin eliminates the configuration burden entirely. It reuses the conversation's own persistent session identifier, introducing no extra id, mapping table, or runtime state. Every model request within the same conversation carries the same value, and that value persists through disconnections, restarts, and continued sessions; different conversations naturally produce different values. The scope is also precise: only model-bound requests destined for opencode.ai receive the header, leaving other providers and side-channel traffic completely untouched.

If you are running DeepSeek Harness with OpenCode Go or Zen as the model backend and would rather not write middleware to manage session headers yourself, install this plugin and refresh the page. Everything else works exactly as before, with no additional setup or ongoing maintenance required.