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Irish rent benchmarks and house price comps
app.railway.up.rent-check-production/irish-rent-check in the official MCP registry.
Endpoint https://rent-check-production.up.railway.app/mcp.
The registry describes it as: Irish rent, rent limits, house price comps (IE, NL, EU), housing report. x402/MPP paid.
We read its 15 tools on 2026-10-22. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
list_areas county_rent stamp_duty_rates paid_rent_check paid_comps paid_ie_housing_report paid_rent_trend paid_purchase_cost paid_nl_house_prices paid_es_house_prices paid_it_house_prices paid_country_bundle paid_de_house_prices paid_fr_house_prices paid_eu_house_prices
Run this server? Show the check in your README
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[](https://lazaretto.dev/mcp-registry/app-railway-up-rent-check-production-irish-rent-check)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.