MCP Observability, Metrics, and Audit Logging (ANSWERED)
Agents fail opaquely without MCP observability. Treat every tool call as a microservice span.
TL;DR — Quick Answer
Log structured audit events (who, tool, args redacted, latency, status), emit metrics (success rate, p99, validation errors), trace across host→gateway→server→downstream API, and build dashboards/alerts tied to agent outcomes — not just HTTP 200.
The Interview Question
What should you log and measure for MCP tool calls in production? Design an observability stack for debugging failed agent workflows.
Deep Explanation
Agents fail opaquely without MCP observability. Treat every tool call as a microservice span.
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