Grok Bot can reach your own agents without a plugin and without wrapping them in MCP tools. It goes through the agent-to-agent protocol, A2A.
I connect Grok Bot to Beacon, a Mastra analytics agent running on my own network, and walk a real agent card field by field before running a live query where Grok Bot hands a 30-day YouTube analytics report to Beacon. The useful distinction is what each protocol connects: MCP connects remote tools to your agent, A2A connects your agent to remote agents that keep their own model, prompt, context, and credentials.
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