DeepSeek Harness 0.2.1-alpha.1 adds a "Let Agent create a plugin" option in plugin management that opens Creator mode while preserving your draft. A new --public-url flag lets you specify the web address shown to users and sent to the model, supporting reverse-proxy URLs with path prefixes. An optional Developer Tools bundle provides raw session logs, bidirectional navigation between chat groups and conversations, and embedded Host diagnostics.