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a2a-bridge

a2a-bridge is an MCP server for Claude Code from firstintent/a2a-bridge. Its token cost is not measured, scanned A, original, MIT.

A server configuration for the A2aBridge service, launched with Bun, a JavaScript runtime. It requires one environment setting to start.

In plain words
What is it for?
Use it to configure the A2aBridge server command and provide its daemon entry setting.
Why use it?
It supplies the launch details needed for the bridge server to run.

MCP server for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: listed in a Claude config.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the a2a-bridge plugin — 1 command, 1 hook, 1 MCP server shipped together

not rated 8 4mo ago A scan tokens not measured original MIT
View the source file firstintent/a2a-bridge
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add firstintent/a2a-bridge
Claude Code
/plugin install a2a-bridge

Made for: Claude Code.

Or install a2a-bridge, the plugin that ships this one along with the rest of its 1 command, 1 hook, 1 MCP server.

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-bridge

README.md
[![agentmods](https://agentmods.dev/badge/mcp/firstintent/a2a-bridge/a2a-bridge-a2a-bridge.svg)](https://agentmods.dev/mcp/firstintent/a2a-bridge/a2a-bridge-a2a-bridge)
Your own site
<a href="https://agentmods.dev/mcp/firstintent/a2a-bridge/a2a-bridge-a2a-bridge"><img src="https://agentmods.dev/badge/mcp/firstintent/a2a-bridge/a2a-bridge-a2a-bridge.svg" alt="Measured on agentmods" height="20"></a>
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

a2a-bridge 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 6d 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.

plugins/a2a-bridge/.mcp.json · 12 lines

What it actually says

{
  "a2a-bridge": {
    "command": "bun",
    "args": [
      "run",
      "${CLAUDE_PLUGIN_ROOT}/server/bridge-server.js"
    ],
    "env": {
      "A2A_BRIDGE_DAEMON_ENTRY": "./daemon.js"
    }
  }
}
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. 6d ago First seen · 12 lines scan A 6cb0466308b2

Subscribe to this mod's changes

a2a-bridge is an MCP server published in the GitHub repository firstintent/a2a-bridge (8 stars, last pushed 4mo ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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 2026-08-31.

Building agentsa2aacpagent-bridgeclaude-codecodexcoding-agent
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