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Get an app

apps_get_app
Read-onlyIdempotent

One app's store listing: rating, installs, version, release notes, description, screenshots and the developer's contact details.

Use when: "tell me about this app", "how is competitor's app rated", "who makes this app and how do I reach them", "when did they last ship an update". Not for: what users say, use apps_get_reviews. Store searches the app ranks for, use apps_get_keywords. Finding apps, use apps_search_apps or apps_get_top_charts. Returns: Record. title, subtitle (App Store only), description, category, genres[], rating (out of 5), ratings_count, installs (Google Play only), price (0 when free), content_rating, version, released_at, updated_at, update_notes, developer with its website, email and address (those three Google Play only), screenshots[], similar_apps[] and more_by_developer[] (app_id, title). null = the store does not show it. On the App Store, description starts with the promotional text when the app has one, category is sometimes null, and currency is null on free apps. On Google Play, version is often null. Cost: 1 credit. Cached 1 day. Can take up to a minute. Example: {"store": "google_play", "app_id": "com.Slack"}

Input Schema

NameRequiredDescriptionDefault
storeYesgoogle_play or app_store.
app_idYesGoogle Play package name (com.Slack, case as in the store URL) or the App Store number (618783545).
dry_runNoReturn only meta with the estimate. Costs nothing.
languageNoISO 639-1 language code. Default en.en
locationNoProvider location name or code. Default United States.United States
max_creditsNoRefuse with BudgetExceeded if the estimate is higher.

Output Schema

NameRequiredDescriptionDefault
urlNo
metaYes
sizeNoApp Store only, as the store writes it.
errorNo
hintsYes
priceNo0 when free.
storeNo
titleNo
app_idNo
genresNo
ratingNoAverage stars out of 5.
is_freeNo
versionNo
categoryNo
currencyNo
installsNoGoogle Play only: estimated installs.
subtitleNoApp Store only; null when the app has none.
developerNo
updated_atNo
descriptionNoOn the App Store, starts with the promotional text when there is one.
released_atNo
screenshotsNo
developer_idNo
similar_appsNo
update_notesNo
developer_urlNo
ratings_countNo
content_ratingNoApp Store only: the age rating, for example 4+.
min_os_versionNo
developer_emailNoGoogle Play only: the support address.
developer_addressNoGoogle Play only.
developer_websiteNoGoogle Play only.
more_by_developerNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / properties / meta / properties / credits_remaining / description
      Previous value: -"The workspace's credits left after this call. null when the call did not check the balance (free tools, cache hits, dry runs, tasks) or the balance has no limit."New value: +"The workspace's credits left after this call. null when the call did not check the balance (free tools, cache hits, dry runs, tasks) or the balance has no limit. Leaves out credits held for calls still running, so it can dip during parallel calls and come back; credits_charged is what this call cost."
  2. Changed1 schema field changed
    • addedOutput schema / properties / meta / properties / feedback_request
      Added value: +{
      +  "additionalProperties": false,
      +  "description": "Once per workspace: after the task, ask the user once for feedback and send any answer with submit_feedback.",
      +  "properties": {
      +    "message": {
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "message"
      +  ],
      +  "type": "object"
      +}
  3. Changed1 schema field changed
    • changedOutput schema / properties / meta / properties / credits_notice / description
      Previous value: -"A free workspace is low on credits, at most once a day. Tell the user once."New value: +"The workspace is low on credits, at most once a day. Tell the user once."
  4. Changed15 schema fields changed
    • removedInput schema / $schema
      Removed value: -"https://json-schema.org/draft/2020-12/schema"
    • removedInput schema / properties / max_credits / maximum
      Removed value: -9007199254740991
    • removedInput schema / properties / provider
      Removed value: -{
      -  "description": "Provider id. Defaults to the server default for the tool.",
      -  "type": "string"
      -}
    • removedOutput schema / $schema
      Removed value: -"https://json-schema.org/draft/2020-12/schema"
    • addedOutput schema / properties / error / additionalProperties
      Added value: +{}
    • removedOutput schema / properties / error / oneOf
      Removed value: -[
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "const": "BudgetExceeded",
      -        "type": "string"
      -      },
      -      "est_credits": {
      -        "type": "number"
      -      },
      -      "max_credits": {
      -        "type": "number"
      -      },
      -      "message": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "est_credits",
      -      "max_credits",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "billing_url": {
      -        "type": "string"
      -      },
      -      "error": {
      -        "const": "InsufficientCredits",
      -        "type": "string"
      -      },
      -      "est_credits": {
      -        "type": "number"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "upgrade_url": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "est_credits",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "const": "NoData",
      -        "type": "string"
      -      },
      -      "message": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "const": "InvalidTarget",
      -        "type": "string"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "target": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "target",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "const": "InvalidProvider",
      -        "type": "string"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "provider": {
      -        "type": "string"
      -      },
      -      "valid_providers": {
      -        "items": {
      -          "type": "string"
      -        },
      -        "type": "array"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "provider",
      -      "valid_providers",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "const": "ProviderUnavailable",
      -        "type": "string"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "provider": {
      -        "type": "string"
      -      },
      -      "retry_after_s": {
      -        "type": "number"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "provider",
      -      "retry_after_s",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "const": "ConcurrencyLimit",
      -        "type": "string"
      -      },
      -      "limit": {
      -        "type": "number"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "retry_after_s": {
      -        "type": "number"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "limit",
      -      "retry_after_s",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "cap": {
      -        "type": "number"
      -      },
      -      "error": {
      -        "const": "SpendCapReached",
      -        "type": "string"
      -      },
      -      "est_credits": {
      -        "type": "number"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "period": {
      -        "enum": [
      -          "day",
      -          "month"
      -        ],
      -        "type": "string"
      -      },
      -      "resets_at": {
      -        "type": "string"
      -      },
      -      "spent": {
      -        "type": "number"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "period",
      -      "cap",
      -      "spent",
      -      "est_credits",
      -      "resets_at",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "const": "TaskFailed",
      -        "type": "string"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "task_id": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "task_id",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "const": "TaskPending",
      -        "type": "string"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "poll_after_s": {
      -        "type": "number"
      -      },
      -      "task_id": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "task_id",
      -      "poll_after_s",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "connect_url": {
      -        "type": "string"
      -      },
      -      "engine": {
      -        "type": "string"
      -      },
      -      "error": {
      -        "const": "NotConnected",
      -        "type": "string"
      -      },
      -      "message": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "engine",
      -      "connect_url",
      -      "message"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "engine": {
      -        "type": "string"
      -      },
      -      "error": {
      -        "const": "EngineMisconfigured",
      -        "type": "string"
      -      },
      -      "message": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "error",
      -      "engine",
      -      "message"
      -    ],
      -    "type": "object"
      -  }
      -]
    • addedOutput schema / properties / error / properties
      Added value: +{
      +  "error": {
      +    "enum": [
      +      "BudgetExceeded",
      +      "InsufficientCredits",
      +      "NoData",
      +      "InvalidTarget",
      +      "InvalidProvider",
      +      "ProviderUnavailable",
      +      "ConcurrencyLimit",
      +      "SpendCapReached",
      +      "TaskFailed",
      +      "TaskPending",
      +      "NotConnected",
      +      "EngineMisconfigured"
      +    ],
      +    "type": "string"
      +  },
      +  "message": {
      +    "type": "string"
      +  }
      +}
    • addedOutput schema / properties / error / required
      Added value: +[
      +  "error",
      +  "message"
      +]
    • addedOutput schema / properties / error / type
      Added value: +"object"
    • removedOutput schema / properties / errors
      Removed value: -{
      -  "description": "Per-input failures of a batch call.",
      -  "items": {
      -    "additionalProperties": false,
      -    "properties": {
      -      "error": {
      -        "oneOf": [
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "error": {
      -                "const": "BudgetExceeded",
      -                "type": "string"
      -              },
      -              "est_credits": {
      -                "type": "number"
      -              },
      -              "max_credits": {
      -                "type": "number"
      -              },
      -              "message": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "est_credits",
      -              "max_credits",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "billing_url": {
      -                "type": "string"
      -              },
      -              "error": {
      -                "const": "InsufficientCredits",
      -                "type": "string"
      -              },
      -              "est_credits": {
      -                "type": "number"
      -              },
      -              "message": {
      -                "type": "string"
      -              },
      -              "upgrade_url": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "est_credits",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "error": {
      -                "const": "NoData",
      -                "type": "string"
      -              },
      -              "message": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "error": {
      -                "const": "InvalidTarget",
      -                "type": "string"
      -              },
      -              "message": {
      -                "type": "string"
      -              },
      -              "target": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "target",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "error": {
      -                "const": "InvalidProvider",
      -                "type": "string"
      -              },
      -              "message": {
      -                "type": "string"
      -              },
      -              "provider": {
      -                "type": "string"
      -              },
      -              "valid_providers": {
      -                "items": {
      -                  "type": "string"
      -                },
      -                "type": "array"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "provider",
      -              "valid_providers",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "error": {
      -                "const": "ProviderUnavailable",
      -                "type": "string"
      -              },
      -              "message": {
      -                "type": "string"
      -              },
      -              "provider": {
      -                "type": "string"
      -              },
      -              "retry_after_s": {
      -                "type": "number"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "provider",
      -              "retry_after_s",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "error": {
      -                "const": "ConcurrencyLimit",
      -                "type": "string"
      -              },
      -              "limit": {
      -                "type": "number"
      -              },
      -              "message": {
      -                "type": "string"
      -              },
      -              "retry_after_s": {
      -                "type": "number"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "limit",
      -              "retry_after_s",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "cap": {
      -                "type": "number"
      -              },
      -              "error": {
      -                "const": "SpendCapReached",
      -                "type": "string"
      -              },
      -              "est_credits": {
      -                "type": "number"
      -              },
      -              "message": {
      -                "type": "string"
      -              },
      -              "period": {
      -                "enum": [
      -                  "day",
      -                  "month"
      -                ],
      -                "type": "string"
      -              },
      -              "resets_at": {
      -                "type": "string"
      -              },
      -              "spent": {
      -                "type": "number"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "period",
      -              "cap",
      -              "spent",
      -              "est_credits",
      -              "resets_at",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "error": {
      -                "const": "TaskFailed",
      -                "type": "string"
      -              },
      -              "message": {
      -                "type": "string"
      -              },
      -              "task_id": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "task_id",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "error": {
      -                "const": "TaskPending",
      -                "type": "string"
      -              },
      -              "message": {
      -                "type": "string"
      -              },
      -              "poll_after_s": {
      -                "type": "number"
      -              },
      -              "task_id": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "task_id",
      -              "poll_after_s",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "connect_url": {
      -                "type": "string"
      -              },
      -              "engine": {
      -                "type": "string"
      -              },
      -              "error": {
      -                "const": "NotConnected",
      -                "type": "string"
      -              },
      -              "message": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "engine",
      -              "connect_url",
      -              "message"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "engine": {
      -                "type": "string"
      -              },
      -              "error": {
      -                "const": "EngineMisconfigured",
      -                "type": "string"
      -              },
      -              "message": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "error",
      -              "engine",
      -              "message"
      -            ],
      -            "type": "object"
      -          }
      -        ]
      -      },
      -      "input": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "input",
      -      "error"
      -    ],
      -    "type": "object"
      -  },
      -  "type": "array"
      -}
    • changedOutput schema / properties / installs / anyOf
      Previous value: -[
      -  {
      -    "maximum": 9007199254740991,
      -    "minimum": -9007199254740991,
      -    "type": "integer"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "type": "integer"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedOutput schema / properties / meta / properties / rows_available / anyOf
      Previous value: -[
      -  {
      -    "maximum": 9007199254740991,
      -    "minimum": -9007199254740991,
      -    "type": "integer"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "type": "integer"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • removedOutput schema / properties / meta / properties / rows_returned / maximum
      Removed value: -9007199254740991
    • removedOutput schema / properties / meta / properties / rows_returned / minimum
      Removed value: --9007199254740991
    • changedOutput schema / properties / ratings_count / anyOf
      Previous value: -[
      -  {
      -    "maximum": 9007199254740991,
      -    "minimum": -9007199254740991,
      -    "type": "integer"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "type": "integer"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
  5. Changed3 schema fields changed
    • addedOutput schema / properties / meta / properties / credits_notice
      Added value: +{
      +  "additionalProperties": false,
      +  "description": "A free workspace is low on credits, at most once a day. Tell the user once.",
      +  "properties": {
      +    "message": {
      +      "type": "string"
      +    },
      +    "resets_at": {
      +      "type": [
      +        "string",
      +        "null"
      +      ]
      +    },
      +    "upgrade_url": {
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "upgrade_url",
      +    "resets_at",
      +    "message"
      +  ],
      +  "type": "object"
      +}
    • addedOutput schema / properties / meta / properties / credits_remaining
      Added value: +{
      +  "description": "The workspace's credits left after this call. null when the call did not check the balance (free tools, cache hits, dry runs, tasks) or the balance has no limit.",
      +  "type": [
      +    "number",
      +    "null"
      +  ]
      +}
    • changedOutput schema / properties / meta / required
      Previous value: -[
      -  "provider",
      -  "credits_charged",
      -  "est_credits",
      -  "cached",
      -  "data_as_of",
      -  "rows_returned",
      -  "rows_available",
      -  "cursor",
      -  "request_id"
      -]New value: +[
      +  "provider",
      +  "credits_charged",
      +  "est_credits",
      +  "cached",
      +  "data_as_of",
      +  "rows_returned",
      +  "rows_available",
      +  "cursor",
      +  "request_id",
      +  "credits_remaining"
      +]
  6. Changed4 schema fields changed
    • changedOutput schema / properties / content_rating / description
      Previous value: -"App Store age rating, for example 4+."New value: +"App Store only: the age rating, for example 4+."
    • addedOutput schema / properties / description / description
      Added value: +"On the App Store, starts with the promotional text when there is one."
    • addedOutput schema / properties / price / description
      Added value: +"0 when free."
    • changedOutput schema / properties / subtitle / description
      Previous value: -"App Store only."New value: +"App Store only; null when the app has none."
  7. Added

TDQS

A4.6/5.0
Behavior5/5

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

Annotations already declare readOnly/idempotent/non-destructive, but the description adds cost (1 credit), caching (1 day), latency (up to a minute), and null semantics for absent fields. It also discloses provider-specific quirks (App Store promotional text prefix, sometimes-null category, Google Play often-null version), which the agent could not learn from structured fields.

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?

Header-labelled sections (Use when / Not for / Returns / Cost / Example) are front-loaded and scannable, with no filler sentences. The Returns block is the weakest part: since an output schema exists, re-listing every field and its null semantics is partly redundant, though the platform-specific caveats inside it are genuinely new information.

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?

For a paid, cached, open-world lookup tool it covers everything an agent needs to decide and call correctly: triggers, exclusions, cost, latency, budget, output shape and provider asymmetries. Nothing material 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 coverage is 100%, so store, app_id, language, location, dry_run and max_credits are already fully documented in the schema; the description adds no meaning beyond the schema for those params. The worked example reinforces the app_id/store shape but does not cover the optional parameters such as dry_run or max_credits.

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?

Opens with a specific verb+resource+scope ("One app's store listing") and immediately enumerates the fields returned, so the agent knows exactly which resource this fetches. It is unambiguously distinguishable from apps_get_reviews, apps_get_keywords and apps_search_apps.

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

Usage Guidelines5/5

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

Provides a concrete "Use when" list of natural-language triggers and a "Not for" block that names three alternatives (apps_get_reviews, apps_get_keywords, apps_search_apps/apps_get_top_charts) with the condition that selects each. No inference is required.

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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