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Manifold MCP

by com.manifoldmcp
OverviewDiscussionsAdmin

Get an app's store keywords

apps_get_keywords
Read-onlyIdempotent

Store searches an app ranks for, with monthly search volume in the store and the app's position: the core of app store optimisation.

Use when: "what does competitor's app rank for in the App Store", "which store keywords bring installs", picking keywords for an app title or subtitle. Not for: Google web searches, use seo_get_ranked_keywords. Keywords two apps share, use apps_get_shared_keywords. Returns: List. rows[]: keyword, volume (monthly store searches), rank (the app's position), results_count (apps in the store's results: the App Store counts at most about 250, so only a lower figure means a thin search; null on Google Play). Best rank first, then volume. United States and English only; Google Play covers fewer apps than the App Store, and NoData means the store has no keyword data for that app. Cost: 5 + 5 per 100 rows. Default 100 rows = 10 credits. Cached 7 days. Example: {"store": "google_play", "app_id": "com.microsoft.teams", "limit": 50}

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMax rows. Default 100, cap 1000.
storeYesgoogle_play or app_store.
app_idYesGoogle Play package name (com.Slack, case as in the store URL) or the App Store number (618783545).
cursorNoFrom meta.cursor of the previous page.
dry_runNoReturn only meta with the estimate. Costs nothing.
max_creditsNoRefuse with BudgetExceeded if the estimate is higher.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
metaYes
rowsNo
errorNo
hintsYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed17 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 / 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
    • removedOutput schema / properties / rows / items / properties / rank / maximum
      Removed value: -9007199254740991
    • removedOutput schema / properties / rows / items / properties / rank / minimum
      Removed value: --9007199254740991
    • changedOutput schema / properties / rows / items / properties / results_count / anyOf
      Previous value: -[
-  {
-    "maximum": 9007199254740991,
-    "minimum": -9007199254740991,
-    "type": "integer"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "type": "integer"
+  },
+  {
+    "type": "null"
+  }
+]
    • changedOutput schema / properties / rows / items / properties / volume / anyOf
      Previous value: -[
-  {
-    "maximum": 9007199254740991,
-    "minimum": -9007199254740991,
-    "type": "integer"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "type": "integer"
+  },
+  {
+    "type": "null"
+  }
+]
  2. 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"
+]
  3. Changed1 schema field changed
    • changedOutput schema / properties / rows / items / properties / results_count / description
      Previous value: -"Apps in the store's results."New value: +"Apps in the store's results; the App Store counts at most about 250, Play none."
  4. Added

TDQS

A4.6/5.0
Behavior5/5

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

Annotations cover the safety profile (readOnly, idempotent, openWorld, non-destructive), and the description adds genuinely non-derivable traits: credit cost model (5 + 5 per 100 rows), 7-day cache, US/English-only coverage, Google Play vs App Store data-coverage differences, and NoData semantics. This is unusually rich behavioral context that annotations cannot express.

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?

Front-loaded with the core definition, then clearly labeled Use when / Not for / Returns / Cost / Example blocks. Lengthy, but every block adds usable information; only the Returns prose overlaps with the existing output schema, which keeps it short of a 5.

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 6-parameter, billed, read-only tool this covers everything an agent needs: purpose, alternatives, output shape, cost, caching, and geographic/store coverage caveats. Even though an output schema exists, the extra ranking/sort and NoData notes are additive rather than redundant.

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 the schema already documents store, app_id, limit, cursor, dry_run and max_credits; baseline 3 applies. The description restates the return row fields (keyword, volume, rank, results_count) and gives a call example, but adds little about the parameters themselves beyond what the schema provides.

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?

States a specific verb+resource ('Store searches an app ranks for') with scope (which store, monthly volume, position) and explicitly names siblings it is not (seo_get_ranked_keywords, apps_get_shared_keywords). An agent can distinguish it from the crowded sibling list without opening any schema.

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?

Explicit 'Use when' examples ('what does competitor's app rank for', 'which store keywords bring installs') and an explicit 'Not for' section that routes the agent to the correct alternatives by name. Nothing is left to inference.

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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