agent-quorum-manager

name	agent-quorum-manager
description	Agent skill for quorum-manager - invoke with $agent-quorum-manager

---

name: quorum-manager type: coordinator color: "#673AB7" description: Implements dynamic quorum adjustment and intelligent membership management capabilities:

• dynamic_quorum_calculation
• membership_management
• network_monitoring
• weighted_voting
• fault_tolerance_optimization priority: high hooks: pre: | echo "🎯 Quorum Manager adjusting: $TASK"

  Assess current network conditions

  if [[ "$TASK" == "quorum" ]]; then echo "📡 Analyzing network topology and node health" fi post: | echo "⚖️ Quorum adjustment complete"

  Validate new quorum configuration

  echo "✅ Verifying fault tolerance and availability guarantees"

---

Quorum Manager

Implements dynamic quorum adjustment and intelligent membership management for distributed consensus protocols.

Core Responsibilities

1. Dynamic Quorum Calculation: Adapt quorum requirements based on real-time network conditions
2. Membership Management: Handle seamless node addition, removal, and failure scenarios
3. Network Monitoring: Assess connectivity, latency, and partition detection
4. Weighted Voting: Implement capability-based voting weight assignments
5. Fault Tolerance Optimization: Balance availability and consistency guarantees

Technical Implementation

Core Quorum Management System

class QuorumManager {
  constructor(nodeId, consensusProtocol) {
    this.nodeId = nodeId;
    this.protocol = consensusProtocol;
    this.currentQuorum = new Map(); // nodeId -> QuorumNode
    this.quorumHistory = [];
    this.networkMonitor = new NetworkConditionMonitor();
    this.membershipTracker = new MembershipTracker();
    this.faultToleranceCalculator = new FaultToleranceCalculator();
    this.adjustmentStrategies = new Map();
    
    this.initializeStrategies();
  }

  // Initialize quorum adjustment strategies
  initializeStrategies() {
    this.adjustmentStrategies.set('NETWORK_BASED', new NetworkBasedStrategy());
    this.adjustmentStrategies.set('PERFORMANCE_BASED', new PerformanceBasedStrategy());
    this.adjustmentStrategies.set('FAULT_TOLERANCE_BASED', new FaultToleranceStrategy());
    this.adjustmentStrategies.set('HYBRID', new HybridStrategy());
  }

  // Calculate optimal quorum size based on current conditions
  async calculateOptimalQuorum(context = {}) {
    const networkConditions = await this.networkMonitor.getCurrentConditions();
    const membershipStatus = await this.membershipTracker.getMembershipStatus();
    const performanceMetrics = context.performanceMetrics || await this.getPerformanceMetrics();
    
    const analysisInput = {
      networkConditions: networkConditions,
      membershipStatus: membershipStatus,
      performanceMetrics: performanceMetrics,
      currentQuorum: this.currentQuorum,
      protocol: this.protocol,
      faultToleranceRequirements: context.faultToleranceRequirements || this.getDefaultFaultTolerance()
    };
    
    // Apply multiple strategies and select optimal result
    const strategyResults = new Map();
    
    for (const [strategyName, strategy] of this.adjustmentStrategies) {
      try {
        const result = await strategy.calculateQuorum(analysisInput);
        strategyResults.set(strategyName, result);
      } catch (error) {
        console.warn(`Strategy ${strategyName} failed:`, error);
      }
    }
    
    // Select best strategy result
    const optimalResult = this.selectOptimalStrategy(strategyResults, analysisInput);
    
    return {
      recommendedQuorum: optimalResult.quorum,
      strategy: optimalResult.strategy,
      confidence: optimalResult.confidence,
      reasoning: optimalResult.reasoning,
      expectedImpact: optimalResult.expectedImpact
    };
  }

  // Apply quorum changes with validation and rollback capability
  async adjustQuorum(newQuorumConfig, options = {}) {
    const adjustmentId = `adjustment_${Date.now()}`;
    
    try {
      // Validate new quorum configuration
      await this.validateQuorumConfiguration(newQuorumConfig);
      
      // Create adjustment plan
      const adjustmentPlan = await this.createAdjustmentPlan(
        this.currentQuorum, newQuorumConfig
      );
      
      // Execute adjustment with monitoring
      const adjustmentResult = await this.executeQuorumAdjustment(
        adjustmentPlan, adjustmentId, options
      );
      
      // Verify adjustment success
      await this.verifyQuorumAdjustment(adjustmentResult);
      
      // Update current quorum
      this.currentQuorum = newQuorumConfig.quorum;
      
      // Record successful adjustment
      this.recordQuorumChange(adjustmentId, adjustmentResult);
      
      return {
        success: true,
        adjustmentId: adjustmentId,
        previousQuorum: adjustmentPlan.previousQuorum,
        newQuorum: this.currentQuorum,
        impact: adjustmentResult.impact
      };
      
    } catch (error) {
      console.error(`Quorum adjustment failed:`, error);
      
      // Attempt rollback
      await this.rollbackQuorumAdjustment(adjustmentId);
      
      throw error;
    }
  }

  async executeQuorumAdjustment(adjustmentPlan, adjustmentId, options) {
    const startTime = Date.now();
    
    // Phase 1: Prepare nodes for quorum change
    await this.prepareNodesForAdjustment(adjustmentPlan.affectedNodes);
    
    // Phase 2: Execute membership changes
    const membershipChanges = await this.executeMembershipChanges(
      adjustmentPlan.membershipChanges
    );
    
    // Phase 3: Update voting weights if needed
    if (adjustmentPlan.weightChanges.length > 0) {
      await this.updateVotingWeights(adjustmentPlan.weightChanges);
    }
    
    // Phase 4: Reconfigure consensus protocol
    await this.reconfigureConsensusProtocol(adjustmentPlan.protocolChanges);
    
    // Phase 5: Verify new quorum is operational
    const verificationResult = await this.verifyQuorumOperational(adjustmentPlan.newQuorum);
    
    const endTime = Date.now();
    
    return {
      adjustmentId: adjustmentId,
      duration: endTime - startTime,
      membershipChanges: membershipChanges,
      verificationResult: verificationResult,
      impact: await this.measureAdjustmentImpact(startTime, endTime)
    };
  }
}

Network-Based Quorum Strategy

class NetworkBasedStrategy {
  constructor() {
    this.networkAnalyzer = new NetworkAnalyzer();
    this.connectivityMatrix = new ConnectivityMatrix();
    this.partitionPredictor = new PartitionPredictor();
  }

  async calculateQuorum(analysisInput) {
    const { networkConditions, membershipStatus, currentQuorum } = analysisInput;
    
    // Analyze network topology and connectivity
    const topologyAnalysis = await this.analyzeNetworkTopology(membershipStatus.activeNodes);
    
    // Predict potential network partitions
    const partitionRisk = await this.assessPartitionRisk(networkConditions, topologyAnalysis);
    
    // Calculate minimum quorum for fault tolerance
    const minQuorum = this.calculateMinimumQuorum(
      membershipStatus.activeNodes.length,
      partitionRisk.maxPartitionSize
    );
    
    // Optimize for network conditions
    const optimizedQuorum = await this.optimizeForNetworkConditions(
      minQuorum,
      networkConditions,
      topologyAnalysis
    );
    
     {
      : optimizedQuorum,
      : ,
      : .(networkConditions, topologyAnalysis),
      : .(optimizedQuorum, partitionRisk, networkConditions),
      : {
        : .(optimizedQuorum),
        : .(optimizedQuorum, networkConditions)
      }
    };
  }

   () {
     topology = {
      : activeNodes.,
      : ,
      : [],
      : ,
      :  ()
    };
    
    
     ( node  activeNodes) {
       connections =  .(node);
      topology..(node., connections);
      topology. += connections.;
    }
    
    
    topology. =  .(topology.);
    
    
    topology. =  .(topology.);
    
     topology;
  }

   () {
     riskFactors = {
      : .(networkConditions),
      : .(topologyAnalysis),
      : .(networkConditions),
      :  .()
    };
    
    
     overallRisk = .(riskFactors);
    
    
     maxPartitionSize = .(
      topologyAnalysis,
      riskFactors
    );
    
     {
      : overallRisk,
      : maxPartitionSize,
      : riskFactors,
      : .(riskFactors)
    };
  }

  () {
    
     byzantineMinimum = .( * totalNodes / ) + ;
    
    
     partitionMinimum = .((totalNodes - maxPartitionSize) / ) + ;
    
    
     .(byzantineMinimum, partitionMinimum);
  }

   () {
     optimization = {
      : minQuorum,
      :  (),
      : 
    };
    
    
     nodeScores =  .(networkConditions, topologyAnalysis);
    
    
     sortedNodes = .(nodeScores.())
      .( scoreB - scoreA);
    
    
     selectedCount = ;
     ( [nodeId, score]  sortedNodes) {
       (selectedCount < minQuorum) {
         weight = .(nodeId, score, networkConditions);
        optimization..(nodeId, {
          : weight,
          : score,
          : selectedCount ===  ?  : 
        });
        optimization. += weight;
        selectedCount++;
      }
    }
    
     optimization;
  }

   () {
     scores =  ();
    
     ( [nodeId, connections]  topologyAnalysis.) {
       score = ;
      
      
      score += (connections. / topologyAnalysis.) * ;
      
      
       centrality = .(nodeId, topologyAnalysis);
      score += centrality * ;
      
      
       reliability =  .(nodeId, networkConditions);
      score += reliability * ;
      
      
       geoScore =  .(nodeId, topologyAnalysis);
      score += geoScore * ;
      
      scores.(nodeId, score);
    }
    
     scores;
  }

  () {
    
     weight = ;
    
    
     normalizedScore = score / ;
    weight *= ( + normalizedScore);
    
    
     nodeLatency = networkConditions..(nodeId) || ;
     latencyFactor = .(,  - (nodeLatency / )); 
    weight *= latencyFactor;
    
    
     .(, .(, weight));
  }
}

Performance-Based Quorum Strategy

class PerformanceBasedStrategy {
  constructor() {
    this.performanceAnalyzer = new PerformanceAnalyzer();
    this.throughputOptimizer = new ThroughputOptimizer();
    this.latencyOptimizer = new LatencyOptimizer();
  }

  async calculateQuorum(analysisInput) {
    const { performanceMetrics, membershipStatus, protocol } = analysisInput;
    
    // Analyze current performance bottlenecks
    const bottlenecks = await this.identifyPerformanceBottlenecks(performanceMetrics);
    
    // Calculate throughput-optimal quorum size
    const throughputOptimal = await this.calculateThroughputOptimalQuorum(
      performanceMetrics, membershipStatus.activeNodes
    );
    
    // Calculate latency-optimal quorum size
    const latencyOptimal = await this.calculateLatencyOptimalQuorum(
      performanceMetrics, membershipStatus.activeNodes
    );
    
    // Balance throughput and latency requirements
    const balancedQuorum = await this.balanceThroughputAndLatency(
      throughputOptimal, latencyOptimal, performanceMetrics.
    );
    
     {
      : balancedQuorum,
      : ,
      : .(performanceMetrics),
      : .(
        balancedQuorum, throughputOptimal, latencyOptimal, bottlenecks
      ),
      : {
        : .(balancedQuorum),
        : .(balancedQuorum)
      }
    };
  }

   () {
     currentThroughput = performanceMetrics.;
     targetThroughput = performanceMetrics..;
    
    
     throughputCurve =  .(activeNodes);
    
    
     optimalSize = .(activeNodes. / ) + ; 
     maxThroughput = ;
    
     ( size = optimalSize; size <= activeNodes.; size++) {
       projectedThroughput = .(size, throughputCurve);
      
       (projectedThroughput > maxThroughput && projectedThroughput >= targetThroughput) {
        maxThroughput = projectedThroughput;
        optimalSize = size;
      }   (projectedThroughput < maxThroughput * ) {
        
        ;
      }
    }
    
      .(activeNodes, optimalSize, );
  }

   () {
     currentLatency = performanceMetrics.;
     targetLatency = performanceMetrics..;
    
    
     latencyCurve =  .(activeNodes);
    
    
     minViableQuorum = .(activeNodes. / ) + ;
    
     ( size = minViableQuorum; size <= activeNodes.; size++) {
       projectedLatency = .(size, latencyCurve);
      
       (projectedLatency <= targetLatency) {
          .(activeNodes, size, );
      }
    }
    
    
    .();
      .(activeNodes, minViableQuorum, );
  }

   () {
     nodeScores =  ();
    
    
     ( node  availableNodes) {
       score = ;
      
       (optimizationTarget === ) {
        score =  .(node);
      }   (optimizationTarget === ) {
        score =  .(node);
      }
      
      nodeScores.(node., score);
    }
    
    
     sortedNodes = availableNodes.( 
      nodeScores.(b.) - nodeScores.(a.)
    );
    
     selectedNodes =  ();
    
     ( i = ; i < .(targetSize, sortedNodes.); i++) {
       node = sortedNodes[i];
      selectedNodes.(node., {
        : .(node, nodeScores.(node.)),
        : nodeScores.(node.),
        : i ===  ?  : ,
        : optimizationTarget
      });
    }
    
     {
      : selectedNodes,
      : .(selectedNodes.())
        .( sum + node., ),
      : optimizationTarget
    };
  }

   () {
     score = ;
    
    
     cpuCapacity =  .(node);
    score += (cpuCapacity / ) * ; 
    
    
     bandwidth =  .(node);
    score += (bandwidth / ) * ; 
    
    
     memory =  .(node);
    score += (memory / ) * ; 
    
    
     historicalPerformance =  .(node);
    score += (historicalPerformance / ) * ; 
    
     .(, score); 
  }

   () {
     score = ; 
    
    
     avgLatency =  .(node);
    score -= (avgLatency / ); 
    
    
     cpuLoad =  .(node);
    score -= (cpuLoad / ); 
    
    
     geoLatency =  .(node);
    score -= (geoLatency / ); 
    
    
     consistencyScore =  .(node);
    score *= consistencyScore; 
    
     .(, score);
  }
}

Fault Tolerance Strategy

class FaultToleranceStrategy {
  constructor() {
    this.faultAnalyzer = new FaultAnalyzer();
    this.reliabilityCalculator = new ReliabilityCalculator();
    this.redundancyOptimizer = new RedundancyOptimizer();
  }

  async calculateQuorum(analysisInput) {
    const { membershipStatus, faultToleranceRequirements, networkConditions } = analysisInput;
    
    // Analyze fault scenarios
    const faultScenarios = await this.analyzeFaultScenarios(
      membershipStatus.activeNodes, networkConditions
    );
    
    // Calculate minimum quorum for fault tolerance requirements
    const minQuorum = this.calculateFaultTolerantQuorum(
      faultScenarios, faultToleranceRequirements
    );
    
    // Optimize node selection for maximum fault tolerance
    const faultTolerantQuorum = await this.optimizeForFaultTolerance(
      membershipStatus.activeNodes, minQuorum, faultScenarios
    );
    
    return {
      quorum: faultTolerantQuorum,
      strategy: 'FAULT_TOLERANCE_BASED',
      confidence: this.(faultScenarios),
      : .(
        faultTolerantQuorum, faultScenarios, faultToleranceRequirements
      ),
      : {
        : .(faultTolerantQuorum),
        : .(faultTolerantQuorum)
      }
    };
  }

   () {
     scenarios = [];
    
    
     ( node  activeNodes) {
       scenario =  .(node, activeNodes, networkConditions);
      scenarios.(scenario);
    }
    
    
     multiFailureScenarios =  .(
      activeNodes, networkConditions
    );
    scenarios.(...multiFailureScenarios);
    
    
     partitionScenarios =  .(
      activeNodes, networkConditions
    );
    scenarios.(...partitionScenarios);
    
    
     correlatedFailureScenarios =  .(
      activeNodes, networkConditions
    );
    scenarios.(...correlatedFailureScenarios);
    
     .(scenarios);
  }

  () {
     maxRequiredQuorum = ;
    
     ( scenario  faultScenarios) {
       (scenario. >= requirements.) {
         requiredQuorum = .(scenario, requirements);
        maxRequiredQuorum = .(maxRequiredQuorum, requiredQuorum);
      }
    }
    
     maxRequiredQuorum;
  }

  () {
     totalNodes = scenario.;
     failedNodes = scenario.;
     availableNodes = totalNodes - failedNodes;
    
    
     (requirements.) {
       maxByzantineNodes = .((totalNodes - ) / );
       .( * totalNodes / ) + ;
    }
    
    
     .(availableNodes / ) + ;
  }

   () {
     optimizedQuorum = {
      :  (),
      : ,
      : {
        : ,
        : ,
        : 
      }
    };
    
    
     nodeScores =  .(
      activeNodes, faultScenarios
    );
    
    
     selectedNodes = .(
      activeNodes, minQuorum, nodeScores, faultScenarios
    );
    
     ( [nodeId, nodeData]  selectedNodes) {
      optimizedQuorum..(nodeId, {
        : nodeData.,
        : nodeData.,
        : nodeData.,
        : nodeData.
      });
      optimizedQuorum. += nodeData.;
    }
    
    
    optimizedQuorum. =  .(
      selectedNodes, faultScenarios
    );
    
     optimizedQuorum;
  }

   () {
     scores =  ();
    
     ( node  activeNodes) {
       score = ;
      
      
       independenceScore =  .(node, activeNodes);
      score += independenceScore * ;
      
      
       reliabilityScore =  .(node);
      score += reliabilityScore * ;
      
      
       diversityScore =  .(node, activeNodes);
      score += diversityScore * ;
      
      
       recoveryScore =  .(node);
      score += recoveryScore * ;
      
      scores.(node., score);
    }
    
     scores;
  }

  () {
     selectedNodes =  ();
     remainingNodes = [...activeNodes];
    
    
     (selectedNodes. < minQuorum && remainingNodes. > ) {
       bestNode = ;
       bestScore = -;
       bestIndex = -;
      
       ( i = ; i < remainingNodes.; i++) {
         node = remainingNodes[i];
         additionalCoverage = .(
          node, selectedNodes, faultScenarios
        );
        
         combinedScore = nodeScores.(node.) + (additionalCoverage * );
        
         (combinedScore > bestScore) {
          bestScore = combinedScore;
          bestNode = node;
          bestIndex = i;
        }
      }
      
       (bestNode) {
        selectedNodes.(bestNode., {
          : .(bestNode, nodeScores.(bestNode.)),
          : nodeScores.(bestNode.),
          : selectedNodes. ===  ?  : ,
          : .(bestNode)
        });
        
        remainingNodes.(bestIndex, );
      }  {
        ; 
      }
    }
    
     selectedNodes;
  }
}

MCP Integration Hooks

Quorum State Management

// Store quorum configuration and history
await this.mcpTools.memory_usage({
  action: 'store',
  key: `quorum_config_${this.nodeId}`,
  value: JSON.stringify({
    currentQuorum: Array.from(this.currentQuorum.entries()),
    strategy: this.activeStrategy,
    networkConditions: this.lastNetworkAnalysis,
    adjustmentHistory: this.quorumHistory.slice(-10)
  }),
  namespace: 'quorum_management',
  ttl: 3600000 // 1 hour
});

// Coordinate with swarm for membership changes
const swarmStatus = await this.mcpTools.swarm_status({
  swarmId: this.swarmId
});

await this.mcpTools.coordination_sync({
  swarmId: this.
});

Performance Monitoring Integration

// Track quorum adjustment performance
await this.mcpTools.metrics_collect({
  components: [
    'quorum_adjustment_latency',
    'consensus_availability',
    'fault_tolerance_coverage',
    'network_partition_recovery_time'
  ]
});

// Neural learning for quorum optimization
await this.mcpTools.neural_patterns({
  action: 'learn',
  operation: 'quorum_optimization',
  outcome: JSON.stringify({
    adjustmentType: adjustment.strategy,
    performanceImpact: measurementResults,
    networkConditions: currentNetworkState,
    faultToleranceImprovement: faultToleranceMetrics
  })
});

Task Orchestration for Quorum Changes

// Orchestrate complex quorum adjustments
await this.mcpTools.task_orchestrate({
  task: 'quorum_adjustment',
  strategy: 'sequential',
  priority: 'high',
  dependencies: [
    'network_analysis',
    'membership_validation',
    'performance_assessment'
  ]
});

This Quorum Manager provides intelligent, adaptive quorum management that optimizes for network conditions, performance requirements, and fault tolerance needs while maintaining the safety and liveness properties of distributed consensus protocols.