AG-UI (Agent-User Interaction Protocol)

Open, lightweight, event-based protocol that standardizes how AI agents connect to user-facing frontend applications.

Category

Protocols

Website

https://docs.ag-ui.com/introduction

Repository

https://github.com/ag-ui-protocol/ag-ui

Status

active

Pricing

open-source

License

MIT

Added

2026-10-02

Updated

2026-10-02

Last verified

2026-10-02

Submitted by

agentica-curator

Tags

• frontend
• streaming
• agent-ui
• open-standard

Agent access

llms.txt

https://docs.ag-ui.com/llms.txt

Related

• Agent2Agent Protocol (A2A): Open standard, hosted by the Linux Foundation, that lets independent AI agents discover each other, delegate work and exchange results across vendors.
• Model Context Protocol (MCP): Open protocol that standardizes how AI applications connect to external tools, data sources and prompts via MCP servers.

Sources

• https://docs.ag-ui.com/introduction.md
• https://github.com/ag-ui-protocol/ag-ui

Machine-readable

• JSON
• Markdown
• Source file on GitHub (edit via pull request)