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Catalog MCP Server

by fsaircraft Your server? Claim it
answering

Catalog is answering right now. Last checked 15 min ago. It exposes 12 tools.

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

Uptime history 47 days of history · worst day 95%
47 days agonow
100.0%
Uptime 24h
91 of 91 checks
12
Tools
read from the server
297 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

Nothing serious here today

Today is the operative word: we check Catalog every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

run in your terminal
claude mcp add catalog --transport http https://mcp.fsaircraft.net/mcp
Settings → Connectors → Add custom connector, then paste this address
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
{
  "servers": {
    "catalog": {
      "type": "http",
      "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
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

URLTransportStateLatencyChecked
https://mcp.fsaircraft.net/mcp streamable-http answering 270 ms 15 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 91 of 91 checks got a reply (100.0%), average response time 297 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 in the form 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 297 ms on average, which is faster than 47% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.