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NATIONAL: federal programme debt with maturity dates across 52 states, LIHTC compliance period endings, HUD subsidy contract expiries, distress and foreclosure flags, and commercial tenancy: who occupies a building, how much of it, and when the lease expires. MASSACHUSETTS ONLY: parcels, ownership and management relationships, and recorded sales. Building permits and certificates of occupancy are Boston only. Call dfx_coverage for the measured grid of every event family and the states each one covers. Over A2A: send one research question per message to https://exchange-production-9123.up.railway.app/a2a (JSON-RPC; A2A 1.0 and 0.3 methods). Without a DFX plan, list answers name the first rows and count the rest, and contact values are never returned. Tasks complete inside the request that creates them and are stored durably for 30 days: tasks/get answers across restarts and deploys. 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Without a DFX plan, list answers name the first rows and count the rest, and contact values are never returned. REAL ESTATE COVERAGE. NATIONAL: federal programme debt with maturity dates across 52 states, LIHTC compliance period endings, HUD subsidy contract expiries, distress and foreclosure flags, and commercial tenancy: who occupies a building, how much of it, and when the lease expires. MASSACHUSETTS ONLY: parcels, ownership and management relationships, and recorded sales. Building permits and certificates of occupancy are Boston only. Call dfx_coverage for the measured grid of every event family and the states each one covers. Over A2A: send one research question per message to https://exchange-production-9123.up.railway.app/a2a (JSON-RPC; A2A 1.0 and 0.3 methods). Without a DFX plan, list answers name the first rows and count the rest, and contact values are never returned. 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