Aggregated request traffic for the AI-agent transports — MCP (streamable HTTP bridge at /mcp) and A2A (the .well-known/agent.json handshake + downstream calls). Lets the admin see at a glance whether real clients are exercising those endpoints. Sources: - ApiUsageEvent rows (authoritative for authenticated calls; every v1 controller writes one with req.originProtocol = rest|mcp|a2a). - nginx access log (captures anonymous A2A discovery hits that never reach the API — GET /.well-known/agent.json has no API key).