r4ck

What you can ask

• Turn a need into a shortlist of three offers with a recommendation.Copy

  Example path compare_servers

MCP connector

Server URL

https://r4ck.dev/mcpCopy

Login

None

Protocol

MCP 2026-07-28

Instructions

R4ck is a search engine over every server offer for sale: VPS, cloud instances, bare metal, GPU nodes, PaaS and shared plans, with the provider behind each one.

Start with search_servers and a sentence ("2 vcpu 4gb under $10 in germany") or explicit parameters. Read understood to see how the sentence was parsed and facets to see what narrowing remains; every count is the number of rows left if that value is chosen next. cheapest ranks the rows meeting a spec by price; compare_servers lays chosen ids side by side; get_server has the price history and similar offers. list_providers with has=["api","cli"] keeps to providers a machine can drive. Quote price.monthly_usd as an estimate and price.amount + currency + interval as the fact. Anyone may read; a key (Authorization: Bearer r4k_…) is needed only to save searches.

Tools

Skills

None in the store listings or on the server