a2a-multi-agent

a2a-multi-agent is a plugin for Claude Code from OrcaQubits/agentic-commerce-skills-plugins. Its manifest loads nothing; the 16 skills, 1 agent, 1 hook it bundles cost 889 tokens per session together, scanned A, original, MIT.

Reference knowledge for A2A, a protocol that lets software agents communicate and work with one another. It covers agent descriptions, task states, streaming updates, notifications, authentication, and framework connections.

In plain words
What is it for?
Building agent-to-agent applications, defining Agent Cards, managing task lifecycles, adding streaming or push notifications, handling authentication, and connecting supported frameworks.
Why use it?
It gives developers the concepts needed to design multi-agent systems that exchange tasks and progress in a consistent way. It also explains the protocol's main lifecycle and communication patterns.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Building agent-to-agent applications, defining Agent Cards, managing task lifecycles, adding streaming or push notifications, handling authentication, and connecting supported frameworks.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add OrcaQubits/agentic-commerce-skills-plugins
/plugin install a2a-multi-agent
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.

Clone the repo
git clone --depth 1 https://github.com/OrcaQubits/agentic-commerce-skills-plugins

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for a2a-multi-agent

README.md
[![agentmods](https://agentmods.dev/badge/plugins/orcaqubits/agentic-commerce-skills-plugins/a2a-multi-agent/github.svg)](https://agentmods.dev/plugins/orcaqubits/agentic-commerce-skills-plugins/a2a-multi-agent)
Your own site
<a href="https://agentmods.dev/plugins/orcaqubits/agentic-commerce-skills-plugins/a2a-multi-agent"><img src="https://agentmods.dev/badge/plugins/orcaqubits/agentic-commerce-skills-plugins/a2a-multi-agent/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for a2a-multi-agent

Your own site · 80×15
<a href="https://agentmods.dev/plugins/orcaqubits/agentic-commerce-skills-plugins/a2a-multi-agent"><img src="https://agentmods.dev/badge/plugins/orcaqubits/agentic-commerce-skills-plugins/a2a-multi-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 16 skills, 1 agent, 1 hook cost 889 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

a2a-multi-agent 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 1mo 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.

a2a-multi-agent/.claude-plugin/plugin.json · 24 lines

What it actually says

{
  "name": "a2a-multi-agent",
  "version": "1.0.0",
  "description": "Expert A2A (Agent-to-Agent) protocol knowledge for building multi-agent systems — Agent Cards, task lifecycle, streaming, push notifications, authentication, and framework integrations.",
  "author": {
    "name": "Rohit Bajaj, Julekha Khatun",
    "url": "https://orcaqubits-ai.com"
  },
  "repository": "https://github.com/OrcaQubits/agentic-commerce-skills-plugins",
  "homepage": "https://github.com/OrcaQubits/agentic-commerce-skills-plugins/tree/main/a2a-multi-agent",
  "keywords": [
    "a2a",
    "agent-to-agent",
    "multi-agent",
    "google",
    "json-rpc",
    "agent-card",
    "task-lifecycle",
    "streaming",
    "push-notifications"
  ],
  "license": "MIT"
}
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. 1mo ago Changed · -4 lines ebb7e26e5639
  2. 1mo ago First seen · 28 lines scan A b61558b14e39

Subscribe to this mod's changes

a2a-multi-agent is a plugin published in the GitHub repository OrcaQubits/agentic-commerce-skills-plugins (39 stars, last pushed 1mo ago), 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.