a2a-client

v0.1.0

Security-hardened Agent2Agent (A2A) client as an MCP server — discover cards, send and stream messages, and use confirmation-gated task control

Claude Code1 MCP serverstdio

By Jeremy LongshoreLicense: MIT2.7k GitHub starsUpdated 16 hours ago

Directory evidence

Runtimes: Claude Code
Parsed components: 1 skill or MCP entry
Source updated: Sep 2, 2026
Manifest status: Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install a2a-client for Claude Code

Installs for the current user

claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install a2a-client@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually

$ git clone https://github.com/jeremylongshore/tons-of-skills-marketplace

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/mcp/a2a-client/.

Plugin files

plugins/mcp/a2a-client/

├── .claude-plugin/plugin.json
└── .mcp.json

MCP servers1

a2a-clientstdio

command: node
args: ${CLAUDE_PLUGIN_ROOT}/dist/index.js
env.A2A_ALLOWED_HOSTS: ${A2A_ALLOWED_HOSTS:-}
env.A2A_ALLOWED_DESTINATIONS: ${A2A_ALLOWED_DESTINATIONS:-}
env.A2A_BEARER_TOKEN: ${A2A_BEARER_TOKEN:-}
env.A2A_API_KEY: ${A2A_API_KEY:-}
env.A2A_AUTH_HEADER_NAME: ${A2A_AUTH_HEADER_NAME:-Authorization}
env.A2A_ALLOW_PRIVATE_HOSTS: ${A2A_ALLOW_PRIVATE_HOSTS:-}
env.A2A_ALLOW_TASK_CANCELLATION: ${A2A_ALLOW_TASK_CANCELLATION:-}
env.A2A_REQUEST_TIMEOUT_MS: ${A2A_REQUEST_TIMEOUT_MS:-30000}
env.A2A_MAX_RESPONSE_BYTES: ${A2A_MAX_RESPONSE_BYTES:-2097152}

MCP configuration uses runtime-provided plugin path placeholders such as ${PLUGIN_ROOT} or ${CLAUDE_PLUGIN_ROOT}. Review the manifest for the runtime-specific expansion rules.

Plugin manifests1

plugins/mcp/a2a-client/.claude-plugin/plugin.json

{
  "name": "a2a-client",
  "version": "0.1.0",
  "description": "Security-hardened Agent2Agent (A2A) client as an MCP server — discover cards, send and stream messages, and use confirmation-gated task control",
  "author": {
    "name": "Jeremy Longshore",
    "url": "https://intentsolutions.io",
    "email": "[email protected]"
  },
  "repository": "https://github.com/jeremylongshore/tons-of-skills-marketplace",
  "license": "MIT",
  "keywords": [
    "a2a",
    "agent2agent",
    "agent-card",
    "multi-agent",
    "interoperability",
    "mcp",
    "agent-comms"
  ]
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[a2a-client on Agent Plugins Marketplace](https://pluginsmp.com/plugins/a2a-client)