About A2a Gateway MCP
A2a Gateway MCP is an MCP server in the Agents category: an MCP server bridging Model Context Protocol and the A2A protocol, enabling LLMs to discover, connect to, and communicate with remote A2A agents.
Install
git clone https://github.com/nisimpson/a2a-gateway-mcpThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (17)
broadcast_messageSend the same message to multiple agents concurrently
Parameters not published.
cancel_taskCancel a running task on an A2A agent
Parameters not published.
check_inboxList inbox entries without consuming them (peek at async responses)
Parameters not published.
clear_historyClear all interaction history for an agent without disconnecting
Parameters not published.
connect_agentRegister a remote A2A agent with a friendly alias
Parameters not published.
create_caller_cardRegister a caller agent card for automatic outbound injection
Parameters not published.
disconnect_agentRemove a registered agent by alias
Parameters not published.
discover_agentsQuery a remote agent directory for available agents
Parameters not published.
get_agent_cardRetrieve an agent's capabilities from its card endpoint
Parameters not published.
get_historyRetrieve interaction history for a connected agent
Parameters not published.
Show all 17 tools
get_taskRetrieve the current state of a previously initiated task
Parameters not published.
list_agentsList all connected agents with aliases, URLs, and rate limits
Parameters not published.
ping_agentPerform a liveness check on a registered agent to verify reachability
Parameters not published.
read_inboxRead and consume inbox messages for a specific agent
Parameters not published.
remove_caller_cardRemove the caller agent card
Parameters not published.
send_messageSend a text or multi-part message to an agent by alias or URL
Parameters not published.
view_caller_cardView the currently registered caller agent card
Parameters not published.
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