Catalog MCP Server

by fsaircraft Your server? Claim it

answering

Catalog is answering right now. Last checked 14 min ago. It exposes 12 tools.

Price comparison for Microsoft Flight Simulator add-ons: search, deals, per-store prices, history.

Uptime history 19 hours of history · worst hour 50%

19 hours agonow

94.3%

Uptime 24h

66 of 70 checks

Tools

read from the server

307 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 3

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 23 September 2026. No other catalogue keeps this.

23 Sep 2 tool descriptions were rewritten compare_prices, price_history

23 Sep a tool changed the parameters it asks for search_addons

Catalog does not always answer

Over the last week it answered 94.3% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add catalog --transport http https://mcp.fsaircraft.net/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "catalog": {
      "url": "https://mcp.fsaircraft.net/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.catalog]
url = "https://mcp.fsaircraft.net/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "catalog": {
      "url": "https://mcp.fsaircraft.net/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "catalog": {
      "url": "https://mcp.fsaircraft.net/mcp"
    }
  }
}

Available tools 12

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

addons

list_addons_for_aircraft

Every add-on implementing one real-world aircraft type, across all studios, cheapest first. The type link is our own classification (from the title and the store metadata), not the store's.

search_addons

Search the fsaircraft.net catalog of payware Microsoft Flight Simulator add-ons (aircraft, scenery, liveries, utilities) across every tracked store. Returns the cheapest live offer for each add-on with its discount and MSFS 2020/2024 compatibility as declared by the selling store.

addon

get_addon

Everything the catalog holds on a single add-on: description, developer, declared simulator compatibility, rating, every store offer with its VAT split and sale expiry, the lowest price ever recorded, and the real-world aircraft types and airports it implements.

aircraft

find_aircraft_type

Resolve a plain-language aircraft name ("737 MAX", "Cessna 172", "A320neo") to its ICAO Doc 8643 designator, with how many add-ons we carry for it. Feed the designator to list_addons_for_aircraft.

compare

compare_prices

Every store offer for one add-on, in-stock offers with known net prices first, ordered by net EUR price. Includes the listed price, tax status, known net price, EUR conversion, stock, sale expiry and an outbound link.

deals

list_deals

Add-ons discounted right now, deepest discount first. A discount here means the current price is below the highest price we have ever recorded for that same offer at that same store — never a store-printed list price, so permanent markdowns do not appear.

developers

list_developers

Add-on studios in the catalog, busiest first, optionally filtered by name.

fetch

fetch

Retrieve one add-on as a document, by the `id` returned from `search` (the add-on slug). Returns the full description plus every current store price.

price

price_history

Daily lowest known VAT-excluded price in EUR, using current exchange rates, plus min/max/current and whether it is at its lowest ever. Answers "has this ever been cheaper than X?".

sceneries

list_sceneries_for_airport

Every add-on scenery we carry for one airport, by ICAO (or IATA) code, cheapest first.

search

Search the fsaircraft.net MSFS add-on catalog and return documents in the shape ChatGPT deep-research and company-knowledge connectors expect. `id` is the add-on slug; pass it to `fetch`. Prefer search_addons when filters or prices matter.

stores

list_stores

Every storefront in the catalog, with how many add-ons we track there, how many are discounted right now, and whether its prices include VAT. Use it to answer "which stores do you actually cover" and to get the `store` slug vocabulary for search_addons.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.fsaircraft.net/mcp	streamable-http	answering	393 ms	14 min ago

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Catalog — questions

Answers built from our own checks of this server.

What can Catalog do?

It exposes 12 tools, read directly from the server on our last check. Among them: compare_prices, fetch, find_aircraft_type, get_addon, list_addons_for_aircraft, list_deals and 6 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Catalog working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 66 of 70 checks got a reply (94.3%), average response time 307 ms. The bar chart above shows every period we have measured.

How do I connect Catalog?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Catalog need an API key?

No. Catalog completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 12 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Catalog?

It answers our handshake in 307 ms on average, which is faster than 58% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.