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by io.github.pipeworx-io
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Fortytwo Apps By Sdk

fortytwo_apps_by_sdk
Read-onlyIdempotent

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" })

Example tool call

This call uses example arguments supplied in the tool’s input schema.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "sdk": "google-ads-admob",
      "limit": 20,
      "_apiKey": "your-42matters-api-key",
      "platform": "android"
    },
    "name": "fortytwo_apps_by_sdk"
  }
}

Input Schema

NameRequiredDescriptionDefault
sdkYesSDK id, or comma-separated SDK ids, to match (apps embedding ANY of them). e.g. "google-ads-admob", "facebook-sdk".
pageNoPage number for pagination (optional).
limitNoResults per page (default 10).
_apiKeyYes42matters API access token (get one at https://42matters.com/pricing).
platformNoApp store to query: "android" (Google Play) or "ios" (Apple App Store). Defaults to "android".

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A3.5/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnly, idempotent, openWorld and non-destructive, so the safety profile is covered. The description usefully notes multi-value 'ANY' matching semantics, but adds nothing about result volume, pagination behavior, or API-key/auth constraints beyond the schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences, purpose front-loaded before the parameter note and the example. The example invocation is somewhat redundant with the schema's own examples, a minor bit of waste.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 5-param, read-only query tool with 100% schema coverage and annotation-provided safety, the description is sufficient; the only missing piece is explicit routing against sibling app-search tools.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so parameter meaning is already fully documented (comma-separated SDK ids, page/limit defaults, platform enum, _apiKey). The description's inline example largely restates the schema examples rather than adding new semantic detail, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb+resource ('Find apps') plus the distinctive filter (integrate a given SDK), which separates it from generic siblings like fortytwo_app_search or fortytwo_app_lookup. It stops short of naming any sibling to differentiate explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives a use-case hint ('competitive/market-share analysis of ad networks, analytics'), which implies when the tool is valuable, but never says when NOT to use it or points to an alternative such as fortytwo_app_search for non-SDK queries.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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