ConstReadonlyCONNECTION_STATE_CHANGES: "mcp.server.connection.state_changes"Counter for connection state changes
ReadonlyERRORS_TOTAL: "mcp.server.errors"Counter for errors
ReadonlyMEMORY_HEAP_USED: "mcp.server.memory.heap_used"Gauge for heap memory used
ReadonlyMEMORY_RSS: "mcp.server.memory.rss"Gauge for RSS memory
ReadonlyREQUEST_DURATION: "mcp.server.request.duration"Histogram for request duration
ReadonlyREQUESTS_TOTAL: "mcp.server.requests"Counter for total requests
ReadonlySESSIONS_ACTIVE: "mcp.server.sessions.active"UpDownCounter for active sessions
ReadonlyUPTIME: "mcp.server.uptime"Gauge for server uptime
OpenTelemetry metric instrument names.