MCP Agent Mail

groups: - name: mcp-agent-mail interval: 30s rules: - alert: MCPHighToolErrorRate expr: | sum by (tool) (rate(mcp_tool_errors_total[5m])) / sum by (tool) (rate(mcp_tool_calls_total[5m])) > 0.05 for: 5m labels: severity: warning annotations: summary: "Tool {{ $labels.tool }} has an elevated error rate" description: | Over the last 5 minutes, tool {{ $labels.tool }} exceeded a 5% error ratio. Investigate recent changes, review capability assignments, or consider surfacing a macro.