HeatSentry : Combating Urban Heat with Multi-Agent AI and Google Gemini

A developer built HeatSentry, an autonomous multi-agent command system powered by Google Gemini models and FortyGuard's thermal mesh API, to combat extreme urban heat. The system uses 10 collaborative AI agents to coordinate interventions such as cool pavement routing, mobile misting fleets, and OSHA labor protection, with a SHA-256 block ledger for audit compliance.

Building HeatSentry : Multi-Agent Urban Heat Resilience with Google Gemini. Disclaimer: I created this piece of content for the purpose of entering the Google AllThingsAgentic Hackathon . Extreme heat is among the deadliest climate hazards facing cities. In Phoenix, asphalt temperatures frequently exceed 140°F 60°C . To tackle this, I built HeatSentry—an autonomous multi-agent command system powered by Google Gemini models and grounded in FortyGuard’s 2-meter pedestrian thermal mesh API. What It Does HeatSentry automates municipal heat response through 10 collaborative AI agents that monitor, negotiate, and dispatch physical interventions in real time: - Cool Pavement Routing : Dispatches titanium-dioxide reflective coating trucks to high-heat corridors. - Mobile Misting Fleets : Deploys high-pressure evaporative cooling trailers to transit hubs. - Grid Peak Shedding : Curtails commercial HVAC loads during thermal peaks. - OSHA Labour Shield : Dynamically enforces mandatory work/rest cycles for outdoor workers based on Wet-Bulb Globe Temperature WBGT . - Vulnerable Citizen Sentinel : Directs emergency hydration and outreach to high-risk zones. Google AI & Agentic Stack - 10-Agent Negotiation Mesh : Uses game-theoretic Nash bargaining consensus with a deterministic supervisor circuit breaker to resolve resource conflicts. - Google Gemini 3.7 Flash : Powers the real-time Incident Copilot via Server-Sent Events SSE token streaming. - Google Gemini 3.1 Flash Audio : Synthesizes instant 24kHz neural voice emergency alerts in English, Spanish, and Arabic. - Google Gemma gemma-2-9b-it : Delivers on-device field triage with sub-20ms edge response. - SHA-256 Block Ledger : Immutably records every dispatch decision for FEMA Category B audit compliance. Links Live Application https://ais-pre-ul2mlgbobcxgg7tkb2lkrl-305446503352.asia-southeast1.run.app https://ais-pre-ul2mlgbobcxgg7tkb2lkrl-305446503352.asia-southeast1.run.app https://ais-pre-ul2mlgbobcxgg7tkb2lkrl-305446503352.asia-southeast1.run.app AllThingsAgenticHackathon GoogleAI ClimateTech AI