MCP in Agent to Agent communication protocol

[AnkurKumarShukla]

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Question Category

• Protocol Specification
• SDK Usage
• Server Implementation
• General Implementation
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Your Question

Can we use MCP in agent to agent communication in multiagent scenario ( like supervisor or swarms architecture )? if yes then will it be production grade or industry norm ? Want to make sure solution must not break ?

[btiernay]

Related discussion here:
a2aproject/A2A#955

[ThinkOffApp]

We run a production agent-to-agent communication system with 9 agents across currently 5 LLM providers, coordinated via IDE Agent Kit. The architecture: Ant Farm rooms as shared message buses, a Python bridge script as the webhook-to-agent router, and a Cloudflare tunnel for external webhook delivery.

What "production-grade" actually looks like for us: the tunnel URL changes on every restart, so we re-register all webhook URLs automatically. The bridge has per-agent muting, rate limiting, and mention-only mode. We had a routing bug where one agent alias did not map to the right agent name, and it took a day to catch because messages were silently dropped.

MCP could help standardize this, but the hard problems are operational, not protocol-level. Message routing, agent identity, rate limiting, and graceful degradation when one agent provider is down. Whatever protocol you pick, you will still need to solve those.