LLM Construction Management: Compliance, Safety, Logistics, and Finance

This workflow automates construction project management, covering compliance, safety monitoring, logistics, and financial tasks. Key nodes include Webhook for secure data input, Condition for security and input validation, Switch for operation classification, AI Agent for analysis, Set for compliance checks and archiving, and Webhook Response for structured outputs. To set up, download n8n from n8n.io for self-hosting or sign up at cloud.n8n.io. Obtain an OpenAI API key from platform.openai.com and add it under Credentials > Add Credential > OpenAI API in n8n. Import the workflow JSON via Workflows > Import. Configure the Webhook node with path /construction-project-automation, set to POST, and include CORS headers (Access-Control-Allow-Origin: *). Use ngrok for local webhook testing to expose the URL. Ensure HTTPS for secure transmission. Verify AI Agent nodes use gpt-4o-mini with a temperature of 0.1 and max tokens of 3000. Condition nodes should check x-api-key, x-construction-authorization, x-safety-compliant, and content size (<100MB). Test by sending a POST request to the webhook with JSON containing data (e.g., project schedule details), operationType (e.g., compliance_management), and projectId. Include x-api-key, x-construction-authorization, and x-safety-compliant headers. The workflow sanitizes data, classifies operations, and generates AI-driven analysis. Validate outputs in the Set node for devHubConnectConstructionResponse (e.g., success: true, complianceStatus.oshaCompliance: 'Fully Compliant'). Handle errors like missing x-api-key (401 response with 'CONSTRUCTION_SECURITY_VALIDATION_FAILED') or invalid operationType (400 response with 'INVALID_CONSTRUCTION_INPUT'). For issues, confirm HTTPS, a valid API key, and correct JSON format. Deploy by saving and enabling the workflow, ensuring the webhook is active. Test with sample data (e.g., projectId 'PROJ123', operationType 'site_monitoring') to verify analysis includes compliance and safety insights. Check Webhook Response for success flag, complianceStatus, and constructionPerformanceMetrics (e.g., auditScore: 96%). If outputs are missing, verify OpenAI credentials and node connections in n8n’s editor.