MCP server for AI assistants

We run a public Model Context Protocol server. Connect it to Claude, or to any other MCP client, and the assistant can assemble a complete PC for a budget out of parts that are in stock today, check whether a set of parts will work together, and estimate frame rates - using our live catalogue rather than remembered prices.

Endpoint: https://konfiguratorius.lt/api/mcp

Transport: Streamable HTTP (POST JSON-RPC). Protocol revision 2025-06-18. No authentication, no account, no API key. All three tools are read-only: nothing you can call changes anything on our side.

Add it to a client

Claude Code, one command:

claude mcp add --transport http konfiguratorius https://konfiguratorius.lt/api/mcp

Any client that takes a JSON config file:

{
  "mcpServers": {
    "konfiguratorius": {
      "type": "http",
      "url": "https://konfiguratorius.lt/api/mcp"
    }
  }
}

In the Claude web and desktop apps, add it under Settings, Connectors, "Add custom connector", and paste the endpoint URL. Browser-hosted clients are supported: the endpoint answers CORS preflights and sends an allow-origin header.

Tools

Each block quotes the tool exactly as the server advertises it over tools/list. The market codes below are the authoritative list of what the endpoint serves.

`build_pc` - Build a PC for a budget

Assemble the best-value, compatibility-checked desktop PC that can actually be bought right now for a given budget, using live prices from shops in Lithuania, Latvia, Estonia, Poland, Czechia, Slovakia, United Kingdom, United States, Slovenia. Returns every part with its price, a compatibility verdict, FPS estimates and a buy link per part.

Required arguments: budgetEur. Every tool also takes an optional market argument: lt, lv, ee, pl, cz, sk, uk, us, si (default lt).

`check_compatibility` - Check PC part compatibility

Check whether a set of PC parts will physically and electrically work together - socket, chipset, RAM type, GPU clearance, cooler height, PSU headroom and connectors. Give part names as free text; they are matched against the live catalogue.

Required arguments: parts. Every tool also takes an optional market argument: lt, lv, ee, pl, cz, sk, uk, us, si (default lt).

`estimate_fps` - Estimate gaming performance

Estimate frame rates for a CPU + GPU pairing across popular games at a chosen resolution and quality preset, including 1% lows and which component is the bottleneck.

Required arguments: cpu, gpu. Every tool also takes an optional market argument: lt, lv, ee, pl, cz, sk, uk, us, si (default lt).

Example prompts

Build me the best gaming PC I can actually buy in Lithuania for 900 euros, and show the price of every part.
Will a Ryzen 5 7600, an MSI B650 board, an RTX 4070 and a Corsair RM750e work together in one machine?
What frame rate would a Ryzen 5 7600 with an RTX 4070 get at 1440p on high settings?

Markets

One endpoint serves every market we operate; the country is an argument, not a separate server. Pass the code in the market argument to price a build in that country's shops and currency.

lt - Lithuania, EUR (konfiguratorius.lt)
lv - Latvia, EUR (konfigurators.lv)
ee - Estonia, EUR (konfiguraator.ee)
pl - Poland, PLN (konfiguratorkomputera.pl)
cz - Czechia, CZK (pckonfigurator.cz)
sk - Slovakia, EUR (pckonfigurator.sk)
uk - United Kingdom, GBP (fpscalculator.co.uk)
us - United States, USD (pcbuildcalculator.com)
si - Slovenia, EUR (pckonfigurator.si)

Limits and honest caveats

Rate limit: 120 requests per hour per IP. A normal conversation makes a handful of calls; the budget optimizer behind build_pc runs over the whole catalogue, which is why the ceiling exists.

Prices and stock come from the shops we list and are refreshed hourly, so a build is priced at what it costs today, not at a remembered figure. Buy links point at the shop holding the cheapest live offer for that part on that market, and we are paid per click by the shop - which is what keeps this free and why there is no search or bare price-lookup tool here.

FPS figures come from a performance model, not measured benchmarks, and compatibility checking covers the physical and electrical rules (socket, chipset, memory type, clearances, power headroom and connectors). Both are estimates offered in good faith, not guarantees.

Contact and privacy

Questions, or a bug in a tool result: info@konfiguratorius.lt.

The server stores no conversation and needs no identity. What it does log is described in our privacy policy.