Static Data & Workflow Variables in n8n

// Get/Set Workflow Static Data
const staticData = getWorkflowStaticData('global');

// Read last processed ID
const lastId = staticData.lastProcessedId || 0;

// Update for next execution
staticData.lastProcessedId = currentId;

// Node-specific static data
const nodeData = getWorkflowStaticData('node');
nodeData.retryCount = (nodeData.retryCount || 0) + 1;