AG-UI

Open, event-based protocol standardizing how AI agents connect to user-facing applications, enabling real-time bidirectional state sync, generative UI, and human-in-the-loop collaboration flows. Supported natively by LangGraph, CrewAI, Pydantic AI, Google ADK, AWS Strands, and more.

Connects to: LangGraph, CrewAI, Pydantic AI, Google ADK, AWS Strands, Mastra · · MIT 15,005★

Use it with an AI agent

Loadbay is an MCP server, so an agent can search the catalog and find this harness:

claude mcp add --transport http loadbay https://loadbay.xyz/api/mcp

• Source: https://github.com/ag-ui-protocol/ag-ui
• This harness as JSON: /api/harnesses/ag-ui
• Agent setup: /setup.md
• Browse all 700+ harnesses on Loadbay