DeepSeek open sources an agent harness where everything is a plugin
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DeepSeek agent harness with plugin architecture, directly matches agent orchestration and open source interests.
DeepSeek open-sourced the DeepSeek Harness, a Node.js-based agent runtime under an MIT license that treats every component—model adapter, tool registry, session log, and agent loop—as a replaceable plugin. Built on the Cordis meta-framework for dynamic composition, it ships with four presets (Standard, Minimal, Code, Creator) and supports model providers including Anthropic, OpenAI, AWS Bedrock, Azure, and Google Gemini, with no dependency on DeepSeek's own models. The harness enforces an append-only session log for full replayability and uses Linux Landlock, macOS Seatbelt, or Windows ACL for sandboxing.