Tencent Video on HarmonyOS Debuts On-Device Agent-to-Agent (A2A) Capabilities
Tencent Video on HarmonyOS has integrated Huawei's openJiuwen A2A protocol to enable seamless on-device collaboration between system assistant Xiaoyi and the app's internal AI agent. This allows users to request plot summaries, recommendations, or character breakdowns directly through Xiaoyi without leaving the video player interface. This implementation showcases a shift from traditional per-app custom API integrations to a unified, decoupled Agent-to-Agent orchestration framework at the OS level. It significantly improves user privacy and latency by processing data locally on-device while providing a consistent UI experience. Utilizing openJiuwen A2A and OnApp Chips foreground context sensing, Xiaoyi functions as a central discovery and routing hub that delegates tasks to app-specific agents. Independent app agents can register and update capabilities on their own timeline without breaking Xiaoyi's core integration.
## BACKGROUND
Agent-to-Agent (A2A) communication protocols allow autonomous AI agents to interact, delegate tasks, and exchange context with one another. openJiuwen is an open-source framework providing SDKs and communication protocols (such as MCP and A2A) designed to build, optimize, and orchestrate AI agent ecosystems.