"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Gold Coast & Brisbane: the building, the street at its door and the everyday context around it.
An open MCP server for the Portuguese housing market, run by flatin.pt. No API key, no registration, no rate-limit negotiation. Twelve tools: • imt_calculate — IMT and Imposto do Selo on a purchase, 2026 tables, including the reduced table, the relief for buyers aged 35 or under and the flat rate for non-residents • imi_rate / imi_annual_cost — the IMI rate of any of the 308 municipalities for 2023–2025, and the annual bill for a given VPT • construction_barometer — how many building-permit cases enter a town hall each month (our own indicator: monthly for three municipalities, annual for eight, method and revision policy published) • search_newbuilds / get_newbuild — 250 new developments, 53 municipalities, 71 developers, with stage and, where published, price • where_to_live / municipality_stats / compare_municipalities — municipal comparisons • glossary_lookup — Portuguese property and tax terms • request_consultation / subscribe_digest — reaching a human The data behind the tax tools is published as open data under CC BY 4.0 on the Portuguese national portal (dados.gov.pt) and archived on Zenodo with a permanent DOI. Anyone may reuse it. Humans, not bots, answer the people who get in touch: a home purchase involves personal data under the GDPR and decisions that cannot be refunded.
6 runtime tools: 2 HemmaBo tools, 2 host onboarding tools, and 2 VRP verification tools. Not an OTA.
OneGoodArea gives AI agents and developer tools access to sourced, dated and confidence-rated place intelligence across Great Britain. Resolve locations, analyse and compare neighbourhoods, discover similar areas, generate decision-focused briefs and monitor changes through 12 MCP tools backed by deterministic, explainable data.
Daily Tampa Bay and Southwest Florida building permits, with job value and contractor. Pay via x402.
French rental documents (leases, rent receipts, inventories) generated as filled PDFs by AI agents.
Building data: address, use, size, height, floors, age, roof, solar panels and the businesses registered at each building.
Cook County / Chicago property by address or PIN: sales, permits, assessments, comps. 100 free/day.
DePIN network telemetry with the source, as_of time and an upstream verify URL on every value.
CityScape Condo Rentals MCP
Now part of GAIP Witness: records a buyer's request and checks what was delivered.
Storm history by address since 2003, recent storm leads, model-based weather and storm forecasts.
Written fix-and-flip term sheets for 1–4 unit investment purchases, by email. Business-purpose only.
Redfin for-sale, for-rent and sold listings plus full property pages, as structured JSON.
Live permit history + status for any King County, WA address, parcel or permit number. Read-only.
Zillow for-sale, for-rent and sold listings, and full property details, as structured JSON.
MappaIQ is the first open marketplace for commercial real estate listings with an MCP connector, letting brokers and buyers search live CRE listings from Claude or ChatGPT. Brokers drop in a spreadsheet and get a live, shareable map with parcel data — free to start at mappaiq.com.
Read-only MCP server for short-term rental owners in Poland. Query reservations, availability, pricing, guest reviews, and monthly stats via 10 tools. OAuth 2.1 with PKCE or static Bearer token.
Your rental portfolio from any assistant: leases, rent, buildings, tenants and documents.
Data by municipality near Barcelona and Madrid: €/m², IBI, rent, minutes. Every figure sourced
