agentmods.dev

ag-ui

A set of coding-agent extensions for building applications with AG-UI, a protocol for connecting user interfaces to AI agents. The included .NET extension covers streaming conversations and other agent interaction patterns.

In plain words
What is it for?
Use it to build .NET apps with streaming chat, server or client tools, approval steps, shared state, images and other media, reasoning traces, or Protocol Buffers transport.
Why use it?
It gives developers guidance for using the AG-UI software development kit in .NET instead of having to discover its supported interaction patterns from scattered code.

Plugin for Claude Code

16k +46 today A scan tokens not measured original MIT
View the source file ag-ui-protocol/ag-ui
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add ag-ui-protocol/ag-ui
agentmods
npx agentmods add plugins/ag-ui-protocol/ag-ui/marketplace
Clone the repo
git clone --depth 1 https://github.com/ag-ui-protocol/ag-ui

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

ag-ui scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude-plugin/marketplace.json · 22 lines

What it actually says

{
  "$schema": "https://json.schemastore.org/claude-code-marketplace.json",
  "name": "ag-ui",
  "owner": {
    "name": "AG-UI"
  },
  "description": "Plugins for working with the AG-UI protocol SDKs.",
  "version": "0.1.0",
  "metadata": {
    "description": "Plugins for working with the AG-UI protocol SDKs.",
    "version": "0.1.0"
  },
  "plugins": [
    {
      "name": "ag-ui-dotnet",
      "source": "./sdks/dotnet/plugins/ag-ui-dotnet",
      "description": "Skills for building apps with the AG-UI .NET SDK: streaming chat (stateless vs hosted agents), server tools, client tools, human-in-the-loop (approvals & interrupts), shared state, multimodal messages, reasoning traces, protobuf transport, and troubleshooting.",
      "version": "0.1.0"
    }
  ]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 22 lines scan A a95704fb6115

Subscribe to this mod's changes

ag-ui is a plugin published in the GitHub repository ag-ui-protocol/ag-ui (15,674 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Building agentsFrontendag-ui-protocolagent-frontendagent-uiagentic-workflowai-agents
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