# BuildPulse > Professional construction intelligence API. Part of the PulseNetwork. BuildPulse provides structured construction and renovation intelligence via x402-gated endpoints. All endpoints return structured JSON. All endpoints accept `?lang=` for any language. Payment: USDC on Base mainnet via x402 protocol. ## Endpoints ### Cost & Planning - GET /api/build/estimate?project=&sqft=&zip=&quality= — Detailed cost estimate with line items: labor, materials, permits, contingency ($0.15) - GET /api/build/materials?project=&sqft=&material= — Full materials takeoff with quantities, pricing, waste factor, Amazon links ($0.10) - GET /api/build/compare?projects=&budget= — Side-by-side project comparison: cost, ROI, timeline, complexity ($0.10) - GET /api/build/roi?project=&zip=&home_value= — ROI analysis: resale value, rental income, payback period ($0.10) ### Compliance & Permits - GET /api/build/code?project=&state=&city= — Building code requirements: IRC/IBC citations, setbacks, egress ($0.10) - GET /api/build/permit?project=&state=&city= — Permit guide: requirements, fees, timeline, inspection sequence ($0.08) - GET /api/build/inspect?stage=&project= — Pre-inspection checklist: what inspectors check, how to pass first time ($0.08) ### Project Management - GET /api/build/schedule?project=&start= — Construction schedule: trade sequencing, milestones, critical path ($0.10) - GET /api/build/contractor?trade=&project=&zip= — Contractor vetting: questions, red flags, contract terms ($0.10) - GET /api/build/subcontractor?trade=&project=&zip= — Subcontractor intelligence: rates, scope, bid checklist ($0.10) ## Payment x402 protocol · USDC on Base mainnet · $0.08-$0.15 per query ## Discovery - OpenAPI spec: /openapi.json - Agent discovery: /.well-known/agent.json - This file: /llms.txt