Zero-config observability for MCP servers. OTel GenAI-compliant spans, redaction on by default, traceparent propagation, OTLP/HTTP export, metrics, and an offline --replay CLI. Stdlib-only, no SDK required.
Zero-config observability for MCP servers. OTel GenAI conventions. **Redaction on by default.** MCP hit **97 million monthly SDK downloads** — and the production playbook is still being written. OWASP's MCP Top 10 puts **"Lack of Audit and Telemetry"** at the top of the risk list. This repo is that gap, filled in three lines.