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Read any app's store listing

get_store_listing
Read-onlyIdempotent

Use this when someone asks about a competitor's or any app's public store page, such as its rating, number of ratings, price, version or last update. Returns the live listing for one store id, with description and release notes cut to 600 characters. Not for your own app's synced text per language.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
langNoTwo-letter language code such as en or it; defaults to the store's own default
storeYesStore to read: ios-app-store, macos-app-store, google-play or microsoft-store
countryNoTwo-letter store country code such as US or IT; defaults to the store's own default
storeIdYesThe app's id in that store: numeric Apple id, Google Play package name such as com.example.app, or Microsoft Store product id

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
langYes
storeYes
statusYes
countryYes
listingYesThe live public listing; description and release notes are cut to 600 characters. Null when the store has no app with that id.
storeIdYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed6 schema fields changed
    • changedInput schema / properties / country / description
      Previous value: -"Two-letter country code (e.g. US, IT)"New value: +"Two-letter store country code such as US or IT; defaults to the store's own default"
    • changedInput schema / properties / lang / description
      Previous value: -"Two-letter language code (e.g. en, it)"New value: +"Two-letter language code such as en or it; defaults to the store's own default"
    • changedInput schema / properties / store / description
      Previous value: -"Which store to read the listing from"New value: +"Store to read: ios-app-store, macos-app-store, google-play or microsoft-store"
    • changedInput schema / properties / storeId / description
      Previous value: -"Store-native app identifier: numeric Apple id, Google Play package name, or Microsoft Store product id"New value: +"The app's id in that store: numeric Apple id, Google Play package name such as com.example.app, or Microsoft Store product id"
    • changedOutput schema / properties / listing / anyOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "currency": {
-        "anyOf": [
-          {
-            "maxLength": 32,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "description": {
-        "anyOf": [
-          {
-            "maxLength": 600,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "developer": {
-        "anyOf": [
-          {
-            "maxLength": 300,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "developerId": {
-        "anyOf": [
-          {
-            "maxLength": 300,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "free": {
-        "type": [
-          "boolean",
-          "null"
-        ]
-      },
-      "genres": {
-        "items": {
-          "maxLength": 100,
-          "type": "string"
-        },
-        "maxItems": 20,
-        "type": "array"
-      },
-      "id": {
-        "anyOf": [
-          {
-            "maxLength": 300,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "price": {
-        "anyOf": [
-          {
-            "maxLength": 100,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "ratings": {
-        "anyOf": [
-          {
-            "maximum": 1000000000000,
-            "minimum": 0,
-            "type": "integer"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "releaseNotes": {
-        "anyOf": [
-          {
-            "maxLength": 600,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "released": {
-        "anyOf": [
-          {
-            "maxLength": 64,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "requiredOsVersion": {
-        "anyOf": [
-          {
-            "maxLength": 100,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "score": {
-        "anyOf": [
-          {
-            "maximum": 1000000,
-            "minimum": 0,
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "screenshotCount": {
-        "maximum": 10000,
-        "minimum": 0,
-        "type": "integer"
-      },
-      "title": {
-        "anyOf": [
-          {
-            "maxLength": 300,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "updated": {
-        "anyOf": [
-          {
-            "maxLength": 64,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "version": {
-        "anyOf": [
-          {
-            "maxLength": 100,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "required": [
-      "id",
-      "title",
-      "developer",
-      "developerId",
-      "score",
-      "ratings",
-      "price",
-      "free",
-      "currency",
-      "version",
-      "released",
-      "updated",
-      "requiredOsVersion",
-      "genres",
-      "screenshotCount",
-      "description",
-      "releaseNotes"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "currency": {
+        "anyOf": [
+          {
+            "maxLength": 32,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "description": {
+        "anyOf": [
+          {
+            "maxLength": 600,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "developer": {
+        "anyOf": [
+          {
+            "maxLength": 300,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "developerId": {
+        "anyOf": [
+          {
+            "maxLength": 300,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "free": {
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "genres": {
+        "items": {
+          "maxLength": 100,
+          "type": "string"
+        },
+        "maxItems": 20,
+        "type": "array"
+      },
+      "id": {
+        "anyOf": [
+          {
+            "maxLength": 300,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "price": {
+        "anyOf": [
+          {
+            "maxLength": 100,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "ratings": {
+        "anyOf": [
+          {
+            "maximum": 1000000000000,
+            "minimum": 0,
+            "type": "integer"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "releaseNotes": {
+        "anyOf": [
+          {
+            "maxLength": 600,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "released": {
+        "anyOf": [
+          {
+            "maxLength": 64,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "requiredOsVersion": {
+        "anyOf": [
+          {
+            "maxLength": 100,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "score": {
+        "anyOf": [
+          {
+            "maximum": 1000000,
+            "minimum": 0,
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Average rating as the store reports it"
+      },
+      "screenshotCount": {
+        "maximum": 10000,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "title": {
+        "anyOf": [
+          {
+            "maxLength": 300,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "updated": {
+        "anyOf": [
+          {
+            "maxLength": 64,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "version": {
+        "anyOf": [
+          {
+            "maxLength": 100,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      }
+    },
+    "required": [
+      "id",
+      "title",
+      "developer",
+      "developerId",
+      "score",
+      "ratings",
+      "price",
+      "free",
+      "currency",
+      "version",
+      "released",
+      "updated",
+      "requiredOsVersion",
+      "genres",
+      "screenshotCount",
+      "description",
+      "releaseNotes"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]
    • addedOutput schema / properties / listing / description
      Added value: +"The live public listing; description and release notes are cut to 600 characters. Null when the store has no app with that id."
  2. First observed

TDQS

A4.2/5.0
Behavior4/5

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 adds genuinely new behavior: the result is a live listing, and description and release notes are truncated at 600 characters — a constraint an agent cannot learn from the schema or annotations.

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 short sentences, front-loaded with the usage trigger, then the return shape, then the exclusion. Every sentence carries information; only the closing clause is slightly elliptical about what "synced text per language" refers to.

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

Completeness5/5

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

An output schema exists, so return values need no elaboration, and the description still adds the truncation caveat and the live-vs-synced distinction. For a four-parameter read tool with full schema coverage, nothing needed to call it correctly is missing.

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% and each parameter is documented (lang, store, country, storeId). The description only adds the framing of "one store id" and hints at language via the exclusion clause, which is marginal over the schema. Baseline 3 applies.

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

Purpose5/5

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

The description names a specific verb (read) and resource (a public store listing) and enumerates the fields returned — rating, number of ratings, price, version, last update. It also distinguishes itself from sibling read tools like get_store_metadata and search_store_results by scoping to a single store id's live public page.

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

Usage Guidelines4/5

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

It gives an explicit trigger ("when someone asks about a competitor's or any app's public store page") and an exclusion ("Not for your own app's synced text per language"). It never names the sibling tool that handles the excluded case, so the agent must infer the alternative rather than being routed to it.

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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