A Command Code Provider for DeepSeek Harness: What the Plugin Adds and Where It Fits

DeepSeek Harness (dsh) has been quietly building a plugin ecosystem around its LLM routing layer, and the dsh-commandcode-provider is one of the more complete community entries. It wraps Command Code’s API — models, auth, quota, and the /alpha/web-search endpoint — into a provider that installs with a single dsh plugin add command. The plugin targets dsh 0.2.0-rc.2 (npm latest) and 0.2.1-rc.2 (npm next); older engines are explicitly unsupported past specific pinned versions. What distinguishes this from a thin wrapper is the operational tooling layered on top. The settings page exposes live quota per account, model visibility toggles, privacy switches (including an optional x-cmd-zdr: 1 header for zero-data-retention routing), and a browser-based OAuth flow that writes the approved key to the local credential store. Multi-account rotation is built in: when one account exhausts its window, the plugin hands off to the next, with optional pinning or per-model routing. A sidebar card surfaces plan tier, 5-hour and weekly windows, balances, and reset times — useful for teams sharing a pool of Command Code subscriptions. Cost observability is a practical highlight. The plugin publishes per-request cost estimates (marked ≈) beside