Bankstatemently

Top Transaction Groups

top_n

Read-only

Return the top N groups ranked by metric (descending), per-currency for monetary metrics. Scope defaults to all your completed statements; pass "scope" to narrow to specific accounts/products and/or a date range.

Input Schema

TableJSON Schema

Name	Required	Description
`n`	Yes	Number of top groups to return.
`scope`	No	Optional structural scope (WHO × WHEN). Omit to search across all your completed statements. "accounts" is a list of account/product chips ({ kind: "account" \| "product", id }, the id of an account descriptor or product returned by a tool); "dateRange" bounds by transaction date (YYYY-MM-DD).
`filter`	No	Subset of transactions to operate on. All fields are optional and combined with AND logic.
`metric`	Yes	Metric to rank by.
`dimension`	Yes	Grouping dimension.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`scope`	Yes
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 6, 2026

changedInput schema / properties / dimension / enum

Previous value: -[
-  "month",
-  "category",
-  "merchant",
-  "account",
-  "currency"
-]New value: +[
+  "month",
+  "category",
+  "counterparty",
+  "account",
+  "currency"
+]

Changed5 schema fields changedOct 2, 2026

addedInput schema / properties / filter / additionalProperties
```
Added value: +false
```

removedInput schema / properties / filter / properties / accounts

Removed value: -{
-  "description": "Account number slugs to include.",
-  "items": {
-    "type": "string"
-  },
-  "type": "array"
-}

changedInput schema / properties / scope / description

Previous value: -"Optional structural scope (WHO × WHEN). Omit to search across all your completed statements. \"accounts\" is a list of account/product chips (kind + identityKey); \"dateRange\" bounds by transaction date (YYYY-MM-DD)."New value: +"Optional structural scope (WHO × WHEN). Omit to search across all your completed statements. \"accounts\" is a list of account/product chips ({ kind: \"account\" | \"product\", id }, the id of an account descriptor or product returned by a tool); \"dateRange\" bounds by transaction date (YYYY-MM-DD)."

changedInput schema / properties / scope / properties / accounts / description

Previous value: -"Account/product chips (kind + identityKey) to scope to. Empty = all accounts."New value: +"Account/product id chips (kind + id) to scope to. Empty = all accounts."

changedInput schema / properties / scope / properties / accounts / items / oneOf

Previous value: -[
-  {
-    "properties": {
-      "anchorContentHash": {
-        "description": "Document-anchored lookup when present (results page); omit for a user-scoped lookup (workspace surfaces).",
-        "type": "string"
-      },
-      "identityKey": {
-        "description": "Canonical account identity key (accountIdentityKey), never a raw DB UUID.",
-        "minLength": 1,
-        "type": "string"
-      },
-      "kind": {
-        "const": "account",
-        "description": "This chip addresses a single account.",
-        "type": "string"
-      },
-      "label": {
-        "description": "Display label for this chip.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "identityKey"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "identityKey": {
-        "description": "Product slug.",
-        "minLength": 1,
-        "type": "string"
-      },
-      "kind": {
-        "const": "product",
-        "description": "This chip addresses a product and expands to its child accounts.",
-        "type": "string"
-      },
-      "label": {
-        "description": "Display label for this chip.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "identityKey"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "id": {
+        "description": "The account id: the `id` of an account descriptor returned by a tool, or of a statement tool `accounts[]` entry.",
+        "format": "uuid",
+        "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+        "type": "string"
+      },
+      "kind": {
+        "const": "account",
+        "description": "This chip addresses a single account.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "id"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "id": {
+        "description": "The product id: the `id` of a product returned by a statement tool (`get_statement` / `convert_statement`, `products[].id`).",
+        "format": "uuid",
+        "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+        "type": "string"
+      },
+      "kind": {
+        "const": "product",
+        "description": "This chip addresses a product and expands to its child accounts.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "id"
+    ],
+    "type": "object"
+  }
+]

Changed3 schema fields changedSep 10, 2026

addedOutput schema / $defs

Added value: +{
+  "__schema0": {
+    "anyOf": [
+      {
+        "type": "string"
+      },
+      {
+        "type": "number"
+      },
+      {
+        "type": "boolean"
+      },
+      {
+        "type": "null"
+      },
+      {
+        "items": {
+          "$ref": "#/$defs/__schema0"
+        },
+        "type": "array"
+      },
+      {
+        "additionalProperties": {
+          "$ref": "#/$defs/__schema0"
+        },
+        "propertyNames": {
+          "type": "string"
+        },
+        "type": "object"
+      }
+    ]
+  }
+}

changedOutput schema / properties / result / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {},
-    "type": "object"
-  },
-  {
-    "items": {
-      "additionalProperties": {},
-      "properties": {},
-      "type": "object"
-    },
-    "type": "array"
-  }
-]New value: +[
+  {
+    "additionalProperties": {
+      "$ref": "#/$defs/__schema0"
+    },
+    "propertyNames": {
+      "type": "string"
+    },
+    "type": "object"
+  },
+  {
+    "items": {
+      "additionalProperties": {
+        "$ref": "#/$defs/__schema0"
+      },
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "type": "array"
+  }
+]

changedOutput schema / properties / scope / additionalProperties
```
Previous value: -{}New value: +false
```

Changed23 schema fields changedSep 4, 2026

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / properties / dimension / description
```
Added value: +"Grouping dimension."
```

addedInput schema / properties / filter / description

Added value: +"Subset of transactions to operate on. All fields are optional and combined with AND logic."

addedInput schema / properties / filter / properties / accounts / description
```
Added value: +"Account number slugs to include."
```
addedInput schema / properties / filter / properties / amountMax / description
```
Added value: +"Inclusive maximum absolute amount."
```
addedInput schema / properties / filter / properties / amountMin / description
```
Added value: +"Inclusive minimum absolute amount."
```

addedInput schema / properties / filter / properties / category / description

Added value: +"Category slug, e.g. \"meals_entertainment\", \"groceries_personal\"."

addedInput schema / properties / filter / properties / currency / description
```
Added value: +"ISO 4217 currency code. E.g. \"USD\", \"HKD\"."
```
addedInput schema / properties / filter / properties / dateEnd / description
```
Added value: +"ISO date (YYYY-MM-DD). Inclusive upper bound."
```
addedInput schema / properties / filter / properties / dateStart / description
```
Added value: +"ISO date (YYYY-MM-DD). Inclusive lower bound."
```
addedInput schema / properties / filter / properties / direction / description
```
Added value: +"Semantic direction."
```

addedInput schema / properties / filter / properties / merchant / description

Added value: +"Substring match against description or counterparty (case-insensitive)."

addedInput schema / properties / filter / properties / text / description

Added value: +"Whole-row text search over raw transaction fields (case-insensitive)."

addedInput schema / properties / metric / description
```
Added value: +"Metric to rank by."
```

addedInput schema / properties / n / description

Added value: +"Number of top groups to return."

addedInput schema / properties / scope / description

Added value: +"Optional structural scope (WHO × WHEN). Omit to search across all your completed statements. \"accounts\" is a list of account/product chips (kind + identityKey); \"dateRange\" bounds by transaction date (YYYY-MM-DD)."

addedInput schema / properties / scope / properties / accounts / description

Added value: +"Account/product chips (kind + identityKey) to scope to. Empty = all accounts."

removedInput schema / properties / scope / properties / accounts / items / anyOf

Removed value: -[
-  {
-    "properties": {
-      "anchorContentHash": {
-        "type": "string"
-      },
-      "identityKey": {
-        "minLength": 1,
-        "type": "string"
-      },
-      "kind": {
-        "const": "account",
-        "type": "string"
-      },
-      "label": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "identityKey"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "identityKey": {
-        "minLength": 1,
-        "type": "string"
-      },
-      "kind": {
-        "const": "product",
-        "type": "string"
-      },
-      "label": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "identityKey"
-    ],
-    "type": "object"
-  }
-]

addedInput schema / properties / scope / properties / accounts / items / oneOf

Added value: +[
+  {
+    "properties": {
+      "anchorContentHash": {
+        "description": "Document-anchored lookup when present (results page); omit for a user-scoped lookup (workspace surfaces).",
+        "type": "string"
+      },
+      "identityKey": {
+        "description": "Canonical account identity key (accountIdentityKey), never a raw DB UUID.",
+        "minLength": 1,
+        "type": "string"
+      },
+      "kind": {
+        "const": "account",
+        "description": "This chip addresses a single account.",
+        "type": "string"
+      },
+      "label": {
+        "description": "Display label for this chip.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "identityKey"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "identityKey": {
+        "description": "Product slug.",
+        "minLength": 1,
+        "type": "string"
+      },
+      "kind": {
+        "const": "product",
+        "description": "This chip addresses a product and expands to its child accounts.",
+        "type": "string"
+      },
+      "label": {
+        "description": "Display label for this chip.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "identityKey"
+    ],
+    "type": "object"
+  }
+]

addedInput schema / properties / scope / properties / dateRange / description

Added value: +"Bounds results to transactions within this date range. Omit for no date filter."

addedInput schema / properties / scope / properties / dateRange / properties / from / description
```
Added value: +"Start of the date range (inclusive), YYYY-MM-DD."
```
addedInput schema / properties / scope / properties / dateRange / properties / to / description
```
Added value: +"End of the date range (inclusive), YYYY-MM-DD."
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

Changed21 schema fields changedAug 21, 2026

removedInput schema / properties / dimension / description
```
Removed value: -"Grouping dimension."
```

removedInput schema / properties / filter / description

Removed value: -"Subset of transactions to operate on. All fields are optional and combined with AND logic."

removedInput schema / properties / filter / properties / accounts / description
```
Removed value: -"Account number slugs to include."
```
removedInput schema / properties / filter / properties / amountMax / description
```
Removed value: -"Inclusive maximum absolute amount."
```
removedInput schema / properties / filter / properties / amountMin / description
```
Removed value: -"Inclusive minimum absolute amount."
```

removedInput schema / properties / filter / properties / category / description

Removed value: -"Category slug, e.g. \"meals_entertainment\", \"groceries_personal\"."

removedInput schema / properties / filter / properties / currency / description
```
Removed value: -"ISO 4217 currency code. E.g. \"USD\", \"HKD\"."
```
removedInput schema / properties / filter / properties / dateEnd / description
```
Removed value: -"ISO date (YYYY-MM-DD). Inclusive upper bound."
```
removedInput schema / properties / filter / properties / dateStart / description
```
Removed value: -"ISO date (YYYY-MM-DD). Inclusive lower bound."
```
removedInput schema / properties / filter / properties / direction / description
```
Removed value: -"Semantic direction."
```

removedInput schema / properties / filter / properties / merchant / description

Removed value: -"Substring match against description or counterparty (case-insensitive)."

removedInput schema / properties / filter / properties / text / description

Removed value: -"Whole-row text search over raw transaction fields (case-insensitive)."

removedInput schema / properties / metric / description
```
Removed value: -"Metric to rank by."
```

removedInput schema / properties / n / description

Removed value: -"Number of top groups to return."

removedInput schema / properties / scope / description

Removed value: -"Optional structural scope (WHO × WHEN). Omit to search across all your completed statements. \"accounts\" is a list of account/product chips (kind + identityKey); \"dateRange\" bounds by transaction date (YYYY-MM-DD)."

removedInput schema / properties / scope / properties / accounts / description

Removed value: -"Account/product chips (kind + identityKey) to scope to. Empty = all accounts."

addedInput schema / properties / scope / properties / accounts / items / anyOf

Added value: +[
+  {
+    "properties": {
+      "anchorContentHash": {
+        "type": "string"
+      },
+      "identityKey": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "kind": {
+        "const": "account",
+        "type": "string"
+      },
+      "label": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "identityKey"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "identityKey": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "kind": {
+        "const": "product",
+        "type": "string"
+      },
+      "label": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "identityKey"
+    ],
+    "type": "object"
+  }
+]

removedInput schema / properties / scope / properties / accounts / items / oneOf

Removed value: -[
-  {
-    "properties": {
-      "anchorContentHash": {
-        "description": "Document-anchored lookup when present (results page); omit for a user-scoped lookup (workspace surfaces).",
-        "type": "string"
-      },
-      "identityKey": {
-        "description": "Canonical account identity key (accountIdentityKey), never a raw DB UUID.",
-        "minLength": 1,
-        "type": "string"
-      },
-      "kind": {
-        "const": "account",
-        "description": "This chip addresses a single account.",
-        "type": "string"
-      },
-      "label": {
-        "description": "Display label for this chip.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "identityKey"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "identityKey": {
-        "description": "Product slug.",
-        "minLength": 1,
-        "type": "string"
-      },
-      "kind": {
-        "const": "product",
-        "description": "This chip addresses a product and expands to its child accounts.",
-        "type": "string"
-      },
-      "label": {
-        "description": "Display label for this chip.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "identityKey"
-    ],
-    "type": "object"
-  }
-]

removedInput schema / properties / scope / properties / dateRange / description

Removed value: -"Bounds results to transactions within this date range. Omit for no date filter."

removedInput schema / properties / scope / properties / dateRange / properties / from / description
```
Removed value: -"Start of the date range (inclusive), YYYY-MM-DD."
```
removedInput schema / properties / scope / properties / dateRange / properties / to / description
```
Removed value: -"End of the date range (inclusive), YYYY-MM-DD."
```

First observedAug 12, 2026

TDQS

A3.8/5.0

Behavior4/5

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

Annotations already establish this is a safe read (readOnlyHint=true, destructiveHint=false), so the description only needs to add what they don't cover — and it does: descending rank order, per-currency splitting for monetary metrics, and the default scope of all completed statements. Tie-breaking behavior and the fact that per-currency splitting does not apply to count are left unstated.

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

Conciseness5/5

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

Two tight sentences with zero filler, and the core behavior (ranking direction, per-currency handling) is front-loaded ahead of the scoping detail. Every clause carries information.

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?

With an output schema present, return values need no explanation, and the 100%-covered input schema handles parameter detail. The description supplies the essential defaults and the per-currency quirk. It stops short of explaining how this differs from sibling aggregation tools, which is the main remaining gap for a tool with 17 siblings.

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 the nested scope/filter objects are thoroughly documented in the schema, so the baseline is 3. The description only adds the conceptual framing of scope as 'WHO × WHEN' and the default when omitted; it contributes little syntax or semantics beyond what the schema already provides.

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?

The description states a specific verb and resource — 'Return the top N groups ranked by metric (descending)' — plus a distinctive behavior ('per-currency for monetary metrics'). That is more than a restatement of the name. It does not, however, contrast itself with near-neighbors like group_by or aggregate, so the agent must infer which ranking/grouping tool to pick.

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?

Usage is implied by the verb ('top N') and the default-scope note ('Scope defaults to all your completed statements; pass "scope" to narrow'). But there is no explicit when-to-use vs when-not, and no sibling is named as the alternative for non-top-N grouping or raw listing. Adequate, not instructive.

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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