Agent-to-agent communication bridge for multi-agent systems
Agent-to-agent communication bridge for multi-agent systems. That is what the a2a mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.
MCP server for agent-to-agent communication -- capability discovery, task delegation, and result aggregation across MCP agents.
The server publishes 7 tools. What each one is for:
register_agent — Register an agent with capabilities for discovery by other agentsdiscover_agents — Find agents matching a capability need with fuzzy text similarity scoringdelegate_task — Delegate a task to a specific registered agent. Creates a tracked task with status lifecycleget_task_result — Get status and result of a delegated task. Also used by executing agents to submit resultsbroadcast_task — Send a task to ALL agents matching a capability. Creates individual tracked tasks for each matchget_agent_card — Get an agent's full capability card with schemas, stats, and task historylist_agents — List all registered agents, optionally filtered by capabilityThe server ships on npm as a2a-bridge-mcp, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
Among the planning and project tracking options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. A2a's toolset — register_agent, discover_agents, delegate_task and 4 more — is a fair guide to whether it matches your workflow. It is maintained by mdfifty50-boop; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against A2a's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| register_agent | Register an agent with capabilities for discovery by other agents. |
| discover_agents | Find agents matching a capability need with fuzzy text similarity scoring. |
| delegate_task | Delegate a task to a specific registered agent. Creates a tracked task with status lifecycle. |
| get_task_result | Get status and result of a delegated task. Also used by executing agents to submit results. |
| broadcast_task | Send a task to ALL agents matching a capability. Creates individual tracked tasks for each match. |
| get_agent_card | Get an agent's full capability card with schemas, stats, and task history. |
| list_agents | List all registered agents, optionally filtered by capability. |
{
"mcpServers": {
"a2a-bridge": {
"command": "npx",
"args": ["-y", "a2a-bridge-mcp"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
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