DeepSeek Harness: open agent framework built from 193 plugins

DeepSeek released dsh (DeepSeek Harness), an open-source agent harness built on the Cordis plugin framework where even the agent loop and model adapter are plugins. The web profile in version 0.2.1-rc.2 comprises 193 @deepseek-ai/dsh-* packages, starts with npx @deepseek-ai/dsh web, and supports third-party models via OpenAI and Anthropic APIs.

• Web profile of dsh 0.2.1-rc.2 is composed of 193 @deepseek-ai/dsh-* plugins
• One-command start: npx @deepseek-ai/dsh web, Web UI on port 3080
• Supports DeepSeek models plus anthropic, openai, Kimi and GLM
• Sessions logged as JSONL, with sandboxes, approvals and an MCP plugin