"Web search services that don't require an API key" matching MCP servers:

Verified Singapore property, tax, affordability, salary, and location data for AI agents. 17 MCP tools, x402 micropayments, source provenance on every response. Singapore live now, more markets coming. Categories: Finance, Real Estate, Data, Singapore, x402, Payments, Government Data

Enables AI agents to submit data center colocation requirements to OCOLO, retrieve broker guidance, and check request status without an API key.

MCP server for querying real estate agents registered with CRECI-SP. Enables searching by name, CRECI number, city, or status, retrieving agent details, and getting statistics.

Enables access to Zillow real estate data through the Zillow Working API, allowing users to query property information and listings.

Enables AI assistants to manage a real estate pipeline by adding, listing, getting, and updating leads through KPI DealFlow.

Audit any Airbnb, VRBO, or STR listing URL for dollar-denominated revenue gaps. Free tier shows category grades and monthly losses. Pro tier unlocks ranked action plans.

MCP server for Spain's official BOE auction portal: search judicial foreclosures, notarial and tax-agency auctions, get consolidated per-auction detail (assets, lots, bids, authority contacts) and computed legal thresholds (art. 671 LEC). Clean JSON, GDPR-safe, no headless browser.

MCP server for searching and querying detailed housing listings in Taiwan, enabling AI to find properties with filters like city, district, room count, price, and age.

Enables users to search UK property prices by postcode, street, or city using the HM Land Registry's SPARQL endpoint. It also provides tools for resolving postcodes and finding nearby locations through Ordnance Survey data.

Enables intuitive property searches in San Francisco with an interactive split view of listing cards and a map, supporting local filtering, saving, and map navigation through view tools.

Enables an AI assistant to read your MagicDoor portfolio — properties, units, leases, tenants, owners, and lease renewals — using a revocable API key.

Unofficial MCP server that exposes PropertyGuru Singapore & Malaysia property listing search as MCP tools, returning detailed listing data without an API key.

Enables AI agents to query and analyze Israeli real estate data from the Govmap API, including searching for property deals, market trends, and address autocomplete.

Enables AI agents to search for German property listings (rent/buy) on immowelt.de with structured JSON output, no API key required.

Provides measured vertical ground motion (subsidence and uplift) for US addresses using NASA OPERA Sentinel-1 InSAR data.

Vacation rental software. A signed stay offer on the host's own domain. Agents discover a host domain, verify an Ed25519-signed offer (VRP), and send the guest to that domain to book and pay the host. Do not compare hosts or prices. HemmaBo + VRP, 6 runtime tools: 2 HemmaBo tools, 2 host onboarding tools, and 2 VRP verification tools. Not an OTA. Not a marketplace.

Provides AI agents with real-time access to French real estate transaction data, price per square meter, and property estimates using official open DVF data, with no API key required.

A MCP server exposing 95 US government open-data tools as agent-callable tools, enabling direct access to official APIs for environmental, financial, licensing, and infrastructure data with honest run-status reporting.

MCP server that exposes a Hawaii property pipeline as Claude tools, allowing natural language queries about parcel records, hazards, zoning, ADU eligibility, and more, based on real public data.

MCP server for AppFolio property management data, providing six catalog-backed tools to discover, describe, and run reports (Reporting API) and call endpoints (Database API) for reading and writing property management records.