Key takeaways
- Lead with adoption and outcomes; keep reliability as support.
- Track completion rate and where sessions stop.
- Watch silent failures and p95 latency per tool.
Here is a practical checklist of MCP server metrics worth tracking. Lead with adoption and outcomes; keep reliability close as support.
Adoption
- Active clients and client mix
- New vs returning connections
- Tool call volume and per-tool adoption
- Tools with zero calls (candidates to fix or cut)
Outcomes
- Workflow completion rate
- Most common workflow and where sessions stop
- Returning usage within 7 and 30 days
Reliability
- Tool-level error rate
- Silent failures (isError inside a 200 OK)
- p50 and p95 latency per tool
- Retries per successful call
How to use it
Review adoption and outcomes weekly to steer the product, and watch reliability for regressions. If a number moves the wrong way, it points you straight at what to fix.
See this on your own server
TrackMCP turns your MCP server's calls into adoption, workflows, and outcomes. One line to install.