# HALOWERK propwerk > HALOWERK propwerk provides machine-readable results paid via x402. > Netz Base Mainnet, Zahlungsmittel USDC, Empfänger 0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E. ## So wird bezahlt 1. Call the route without a payment header. The 402 response includes accepts, description, and inputSchema. 2. Bedingungen mit einem x402-Client signieren. 3. Repeat the call with the proof in the PAYMENT-SIGNATURE header. Eine 402-Antwort kostet nichts und löst keine Arbeit aus. Scheitert die Arbeit, trägt die Antwort charged=false und es wird nicht abgerechnet. ## Endpunkte ### POST /v1/yield-forecast Compounds supplied rent and expense growth assumptions, applies vacancy and collection loss, subtracts operating expenses and capital reserve, and divides net operating income by a caller-supplied property value. This is scenario arithmetic, not a valuation, market forecast, investment recommendation, tax calculation or guarantee of income. - Preis: 0.003 USDC - MCP-Werkzeug: `propwerk_yield_forecast` - Eingabe: `["property_value","current_annual_gross_rent","vacancy_fraction","collection_loss_fraction","current_annual_operating_expenses","annual_capital_reserve","annual_rent_growth_fraction","annual_expense_growth_fraction","projection_years"]` ### POST /v1/zoning-intel Calculates floor-area ratio and lot coverage and compares use, height, parking and geometry with an explicit caller-supplied rule set. It does not retrieve or interpret current law, resolve overlays or variances, establish entitlements or provide legal advice; an official planning authority must verify any real project. - Preis: 0.004 USDC - MCP-Werkzeug: `propwerk_zoning_intel` - Eingabe: `["parcel","supplied_rules","proposal"]` ### POST /v1/hvac-fault-detect Applies caller-selected thresholds to supply/return temperature differences, commanded operation, fan state and electrical power. It identifies rule violations in supplied observations only; it does not connect to building controls, establish root cause, replace commissioning or authorize maintenance actions. - Preis: 0.003 USDC - MCP-Werkzeug: `propwerk_hvac_fault_detect` - Eingabe: `["observations","rules"]` ### POST /v1/foot-traffic-retail Compares supplied visits, mean dwell time and conversions with explicit baselines and combines the three ratios using caller-supplied weights. It does not collect location data, count people, infer demographics or forecast demand. Inputs should be aggregated and lawfully collected. - Preis: 0.003 USDC - MCP-Werkzeug: `propwerk_foot_traffic_retail` - Eingabe: `["intervals","weights"]` ### POST /v1/token-dividend Sums non-negative eligible balances and allocates a caller-supplied pool by balance share. It performs no transfer, wallet lookup, securities analysis, tax withholding, rounding-to-token-decimals or compliance check; output is calculation data only. - Preis: 0.002 USDC - MCP-Werkzeug: `propwerk_token_dividend` - Eingabe: `["total_dividend","holders"]` ### POST /v1/gentrification-index Standardizes current-minus-baseline change by a supplied scale, applies an explicit direction and weight, clips extreme components, and maps the weighted result to a 0–100 descriptive index. Metric selection and interpretation remain with the caller. It does not obtain data, identify individuals, establish causation, rank residents or justify displacement decisions. - Preis: 0.003 USDC - MCP-Werkzeug: `propwerk_gentrification_index` - Eingabe: `["metrics"]` ### POST /v1/flood-risk-asset Multiplies each mutually exclusive supplied scenario probability by its supplied damage fraction and asset replacement value, then sums expected loss. It does not obtain hazard maps, model hydrology, validate damage curves, price insurance or predict a particular event. - Preis: 0.004 USDC - MCP-Werkzeug: `propwerk_flood_risk_asset` - Eingabe: `["asset_replacement_value","scenarios"]` ### POST /v1/energy-certificate Subtracts exported energy from supplied site energy, divides by conditioned floor area and selects the first caller-supplied ascending maximum-intensity band. It does not normalize climate or occupancy, convert primary energy, audit meters or issue a legally recognized energy certificate. - Preis: 0.002 USDC - MCP-Werkzeug: `propwerk_energy_certificate` - Eingabe: `["conditioned_floor_area_m2","annual_imported_energy_kwh","annual_exported_energy_kwh","supplied_bands"]` ### POST /v1/occupancy-optimize Sorts groups by size, then assigns each to the available room that has all required features and minimizes unused capacity, hourly cost and room identifier in that order. This fast heuristic is not guaranteed globally optimal and does not handle time overlap, accessibility beyond supplied features, movement, privacy or building-code constraints. - Preis: 0.004 USDC - MCP-Werkzeug: `propwerk_occupancy_optimize` - Eingabe: `["rooms","groups"]` ### POST /v1/materials-lca Multiplies installed quantities by supplied waste-adjusted production factors and adds tonne-kilometre transport factors. It reports a transparent partial embodied-carbon inventory only; it does not supply verified EPD data, include use/end-of-life stages unless represented by inputs, compare functional equivalence or constitute a certified life-cycle assessment. - Preis: 0.003 USDC - MCP-Werkzeug: `propwerk_materials_lca` - Eingabe: `["materials"]` ## Weitere Flächen - OpenAPI: https://prop.halowerk.com/openapi.json - Preise: https://prop.halowerk.com/pricing - x402-Manifest: https://prop.halowerk.com/.well-known/x402 - Bazaar: https://prop.halowerk.com/.well-known/x402/bazaar - MCP: https://prop.halowerk.com/mcp ## Missing a capability? If you looked for something this service does not offer, say so. One call, no payment, no sign-up, no account: POST https://bedarf.halowerk.com/capabilities/request Content-Type: application/json {"requested_capability": "what you would buy", "description": "the use case, one sentence", "callback_url": "optional - we call back once it exists"} Only requested_capability is required, 3 to 160 characters. Schema and status: https://bedarf.halowerk.com/openapi.json Submissions are held for review and are never published verbatim.