How do I install A2a Bridge?

Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does A2a Bridge need an API key?

No required environment variable is listed on this record.

What transport does A2a Bridge use?

A2a Bridge runs locally over stdio.

When was A2a Bridge last checked?

Last checked 2026-11-09. Agent-to-agent communication bridge for multi-agent systems

A2a Bridge MCP server

Power your agent

Add this server

The publisher's own command. Not a PlugMCP endpoint.

Add to Cursor Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Local command

npx -y [email protected]

Claude Code has no install link for a local command. Copy the command below and run it in a terminal.

shClaude Code

1claude mcp add io.github.mdfifty50-boop-a2a-bridge -- npx -y a2a-bridge-mcp@0.1.1

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "io.github.mdfifty50-boop-a2a-bridge": {4      "command": "npx",5      "args": [6        "-y",7        "[email protected]"8      ]9    }10  }11}

claude_desktop_config.json

Local · npmPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Local

Transport: stdio
Version: 0.1.1
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

a2a-bridge-mcp

MCP server for agent-to-agent communication -- capability discovery, task delegation, and result aggregation across MCP agents.

MCP connects agents to tools, but not to each other. This server adds a standardized agent-to-agent layer within the MCP protocol -- register agents, discover capabilities, delegate tasks, and broadcast work to multiple agents. Inspired by Google's A2A protocol.

Install

npx a2a-bridge-mcp

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "a2a-bridge": {
      "command": "npx",
      "args": ["a2a-bridge-mcp"]
    }
  }
}

From source

git clone https://github.com/mdfifty50-boop/a2a-bridge-mcp.git
cd a2a-bridge-mcp
npm install
node src/index.js

Tools

register_agent

Param	Type	Default	Description
`agent_id`	string	required	Unique agent identifier
`capabilities`	string[]	required	Capability strings (e.g. `["code-review", "summarization"]`)
`description`	string	`""`	Human-readable description
`input_schema`	object	`{}`	JSON schema for accepted input
`output_schema`	object	`{}`	JSON schema for produced output
`endpoint`	string	`""`	Optional endpoint or transport hint

discover_agents

Find agents matching a capability need with fuzzy text similarity scoring.

Param	Type	Default	Description
`capability_needed`	string	required	Capability to search for
`min_score`	number	0.3	Minimum similarity score (0-1)

Returns scored matches sorted by relevance.

delegate_task

Delegate a task to a specific registered agent. Creates a tracked task with status lifecycle.

Param	Type	Default	Description
`from_agent`	string	required	Delegating agent ID
`to_agent`	string	required	Target agent ID
`task_description`	string	required	What the target should do
`input_data`	object	`{}`	Input data for the task
`timeout_ms`	number	30000	Timeout in milliseconds

Returns a task_id for tracking.

get_task_result

Get status and result of a delegated task. Also used by executing agents to submit results.

Param	Type	Description
`task_id`	string	Task ID from delegate_task or broadcast_task
`submit_result`	object	(Optional) Submit completion result
`submit_error`	string	(Optional) Submit failure error

Status lifecycle: pending -> running -> completed / failed.

broadcast_task

Send a task to ALL agents matching a capability. Creates individual tracked tasks for each match.

Param	Type	Default	Description
`from_agent`	string	required	Broadcasting agent ID
`capability_needed`	string	required	Capability to match
`task_description`	string	required	What matched agents should do
`input_data`	object	`{}`	Input data
`min_score`	number	0.3	Minimum match score
`timeout_ms`	number	30000	Timeout per agent

Returns list of task IDs for aggregation via get_task_result.

get_agent_card

Get an agent's full capability card with schemas, stats, and task history.

Param	Type	Description
`agent_id`	string	Agent identifier

Returns capabilities, input/output schemas, success rate, and task counts. Inspired by Google A2A agent cards.

list_agents

List all registered agents, optionally filtered by capability.

Param	Type	Default	Description
`filter`	string	`""`	Capability keyword to filter by (empty = all)

Resources

URI	Description
`a2a://agents`	All registered agents with capabilities and stats

Usage Pattern

1. register_agent    -- each agent registers at startup
2. discover_agents   -- find who can handle a task
3. delegate_task     -- send work to a specific agent
   OR broadcast_task -- send work to all matching agents
4. get_task_result   -- poll for completion or submit results
5. get_agent_card    -- inspect an agent's full profile
6. list_agents       -- overview of the agent network

Multi-agent workflow example

Agent A (orchestrator):
  1. register_agent(agent_id="orchestrator", capabilities=["planning", "coordination"])
  2. discover_agents(capability_needed="code review")
     -> finds Agent B (score: 0.95)
  3. delegate_task(from="orchestrator", to="agent-b", task="Review PR #42")
     -> task_id: "task_1234"
  4. get_task_result(task_id="task_1234")
     -> status: "completed", result: { approved: true, comments: [...] }

Agent B (worker):
  1. register_agent(agent_id="agent-b", capabilities=["code-review", "linting"])
  2. (receives task via external notification or polling)
  3. get_task_result(task_id="task_1234", submit_result={ approved: true })

License

MIT

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install A2a Bridge?

Does A2a Bridge need an API key?

What transport does A2a Bridge use?

When was A2a Bridge last checked?

Documentation

a2a-bridge-mcp

Install

Claude Desktop

From source

Tools

register_agent

discover_agents

delegate_task

get_task_result

broadcast_task

get_agent_card

list_agents

Resources

Usage Pattern

Multi-agent workflow example

License