42matters
42matters MCP — wraps the 42matters App Market Data API (42matters.com)
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
claude mcp add --transport http 42matters 'https://gateway.pipeworx.io/42matters/mcp'{
"mcpServers": {
"42matters": {
"type": "http",
"url": "https://gateway.pipeworx.io/42matters/mcp"
}
}
}Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
Contents
mcp-42matters
42matters MCP — wraps the 42matters App Market Data API (42matters.com)
Part of Pipeworx — an MCP gateway connecting AI agents to 1872+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.
Tools
| Tool | Description |
|---|---|
fortytwo_app_lookup | Look up full details for a single mobile app — title, developer, ratings, downloads/installs, category, price, and more. For Android pass the package name via app_id (e.g. "com.facebook.katana"); for iOS pass the numeric App Store id (e.g. "284882215"). Example: fortytwo_app_lookup({ platform: "android", app_id: "com.facebook.katana", _apiKey: "your-token" }) |
fortytwo_app_search | Search the app store by keyword and return matching apps with pagination. Example: fortytwo_app_search({ platform: "ios", query: "racing games", limit: 20, page: 1, _apiKey: "your-token" }) |
fortytwo_top_charts | Get a ranked top-chart list (top free, top paid, top grossing, etc.) for a country and category. Android uses cat_key (e.g. "OVERALL"); iOS uses genre_id (e.g. "36" for the overall/all-apps genre) plus optional device_type. Example: fortytwo_top_charts({ platform: "android", list_name: "topselling_free", cat_key: "OVERALL", country: "US", limit: 10, _apiKey: "your-token" }) |
fortytwo_apps_by_sdk | Find apps that integrate a given SDK. Pass one or more SDK ids via sdk (e.g. "google-ads-admob"). Useful for competitive/market-share analysis of ad networks, analytics, and other SDKs. Example: fortytwo_apps_by_sdk({ platform: "android", sdk: "google-ads-admob", limit: 20, _apiKey: "your-token" }) |
Quick Start
Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):
{
"mcpServers": {
"42matters": {
"url": "https://gateway.pipeworx.io/42matters/mcp"
}
}
}What this endpoint actually serves
tools/list at https://gateway.pipeworx.io/42matters/mcp returns the tools in the table
above plus the shared Pipeworx meta-tools — ask_pipeworx,
discover_tools, search_within, remember/recall and the rest of the
gateway-wide set. So the tool count you see is larger than this table: a
single-pack endpoint currently lists roughly 30 shared tools alongside the
pack's own. The connection's initialize response states its exact scope, and
is the authoritative answer for a given day.
This is deliberate, not multiplexing by accident. The meta-tools are what let a
scoped connection answer a question this pack does not cover — via
ask_pipeworx, which routes across the whole catalog — without you adding a
second MCP server. There is currently no way to mount a pack endpoint without
them; if the extra schemas cost you more context than the routing is worth,
connect to the full gateway once rather than to several pack endpoints.
Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:
{
"mcpServers": {
"pipeworx": {
"url": "https://gateway.pipeworx.io/mcp"
}
}
}Both URLs reach the same gateway and the same 1872+ data sources. The
only difference is which pack's tools are listed directly; ask_pipeworx
reaches all of them from either one.
No MCP client? Call it over HTTP
This pack takes your own API key (_apiKey) — we don't front one for it, so there's no curl here that would run without it. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/fortytwo_app_lookup. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.
Standalone (no gateway account)
This package also runs as a local stdio MCP server — no Pipeworx account, no gateway round-trip:
{
"mcpServers": {
"42matters": {
"command": "npx",
"args": ["-y", "@pipeworx/mcp-42matters"]
}
}
}Or run it directly to confirm it starts:
npx -y @pipeworx/mcp-42mattersIt speaks MCP over stdin/stdout and answers initialize/tools/list/tools/call
for only this pack's tools — none of the shared meta-tools the gateway
connection above adds. Same source, same tools, no ask_pipeworx routing.
Using with ask_pipeworx
Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:
ask_pipeworx({ question: "your question about 42matters data" })The gateway picks the right tool and fills the arguments automatically.
More
License
MIT
Frequently asked questions
What is 42matters?
42matters MCP — wraps the 42matters App Market Data API (42matters.com)
How do I install 42matters?
It runs as a remote server. In Claude Code: claude mcp add --transport http 42matters 'https://gateway.pipeworx.io/42matters/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.
Does 42matters need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is 42matters open source?
Yes. Its code is on GitHub under the MIT license.
Who maintains 42matters?
It is published by pipeworx-io. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.