AG-UI
Open protocol standardizing event-based communication between AI agents and user-facing applications.
≈ 3.1kvisits/mo
Established · estimate, read 2026-09-20
- For
- Application developers building user-facing AI agent features and integrations
- Price
- Price not read
- Activity
- Actively maintainednothing dated on the site
- Company
- founding year not on record
- Runs as
- API
- connect AI agents to user-facing applications with standardized protocols
- stream agent state and UI updates in real-time to frontends
- handle multi-turn agent sessions with interrupts and human-in-the-loop control
- #1
Collaborative Gym
No description yet.
30.6MActive—1885 - #2
JetBrains
Integrated development environments for Java, Python, JavaScript, C++, .NET and Kotlin with code analysis and debugging.
492kActive—2002 - #3
DeepSeek
Language model API for text generation and reasoning tasks.
490kActiveFrom $0.02 per use2023 - #4
Twilio
Sends and receives SMS, email, and voice messages through APIs and manages customer conversations with AI.
1.1MActiveFree plan2008 - #5
PostHog
Ingests product data and runs AI agents to investigate issues and recommend product improvements.
24.7knot readFree plan2020 - #6
AI Innovation Workspace
Multiplayer canvas for teams to plan, design, and build together with integrated AI workflows.
1.1MActiveFrom $8/user/mo
What is AG-UI?
Open protocol standardizing event-based communication between AI agents and user-facing applications.
Who is AG-UI for?
Application developers building user-facing AI agent features and integrations
Do people use AG-UI?
Established: ≈ 3.1k visits a month · estimate, 2026-09.
Is AG-UI still maintained?
Actively maintained.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one row at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.