Tencent Technical Engineering

Aug 14, 2026 · Artificial Intelligence

Inside DeepSeek Harness: How a Modular Agent Architecture Enables Plug‑in‑Based AI Agents

The article dissects DeepSeek Harness, revealing how its Cordis‑based plugin runtime provides reversible side effects, fiber‑driven lifecycle management, scoped presets, and a worker‑thread code mode that together deliver hot‑module replacement, zero‑downtime production updates, self‑evolving agents, and robust failure atomicity, while contrasting these mechanisms with traditional DI containers, Pi’s Extension model, and Codex’s sandbox approach.