EU Trade Explorer

Get Concentration Compare

get_concentration_compare

Partner-concentration (HHI) compared across sub-products: one HHI line per sub-product rather than per flow, to see which sub-products drive a parent code's overall concentration.

Input Schema

TableJSON Schema

Name	Required	Description
`query`	Yes	The product/reporter/partner-set/period/frequency slice to query -- the same request body every tradedashboard.eu analytical endpoint takes. See its own field descriptions (product, reporter, partner_set, period_start, period_end, frequency, n_top, ...) for details; only `product` is required, everything else has a sensible default.
`compact`	No	If true, condense long numeric time series (more than ~6 points -- typically monthly/quarterly windows or wide multi-partner/multi-period breakdowns) into summary statistics (first, last, min, max, mean, pct_change) instead of returning every data point. Leave false for full-fidelity series (e.g. to actually plot a chart); set true when you just need the headline trend and want to save context.
`n_subcodes`	No	Max number of sub-products to plot as separate HHI lines.

Output Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed10 schema fields changedAug 5, 2026

removedInput schema / $defs

Removed value: -{
-  "DashboardQuery": {
-    "description": "Shared request body for every analytical endpoint.\n\nOne product (or a list of products to aggregate), one reporter (or group of\nreporters), a partner set, a period window and a frequency fully describe a\nslice of Eurostat Comext/PRODCOM data. Individual endpoints read extra,\nendpoint-specific options from the query string (e.g. ``entity_level``,\n``flow``, ``partner``) rather than from this body.",
-    "properties": {
-      "frequency": {
-        "default": "quarter",
-        "description": "Resampling frequency for the series: 'month', 'quarter' or 'year'.",
-        "title": "Frequency",
-        "type": "string"
-      },
-      "include_other": {
-        "default": true,
-        "description": "Bundle entities outside the top-N into a single 'Other' bucket.",
-        "title": "Include Other",
-        "type": "boolean"
-      },
-      "lang": {
-        "default": "en",
-        "description": "Language for translated labels in the response (en, de, fr, es, it, ro).",
-        "title": "Lang",
-        "type": "string"
-      },
-      "midpoint": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null,
-        "description": "Split point 'YYYY-MM' for the Pattern Shifts tab: the window is cut in two here and the before/after change per entity is reported. Defaults to the middle of the period when omitted.",
-        "title": "Midpoint"
-      },
-      "n_top": {
-        "default": 7,
-        "description": "Number of top entities (by volume/value) to break out individually in charts.",
-        "title": "N Top",
-        "type": "integer"
-      },
-      "partner_set": {
-        "default": "non-EU countries",
-        "description": "Named partner preset, e.g. 'non-EU countries', 'EU countries', 'all countries', or a predefined partner group.",
-        "title": "Partner Set",
-        "type": "string"
-      },
-      "partners": {
-        "anyOf": [
-          {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null,
-        "description": "Explicit partner-country list that overrides 'partner_set' when present.",
-        "title": "Partners"
-      },
-      "period_end": {
-        "description": "Inclusive end of the analysis window, ISO month 'YYYY-MM'. Defaults to roughly three months ago — the latest period Eurostat typically has fully reported.",
-        "title": "Period End",
-        "type": "string"
-      },
-      "period_start": {
-        "default": "2015-01",
-        "description": "Inclusive start of the analysis window, ISO month 'YYYY-MM'.",
-        "title": "Period Start",
-        "type": "string"
-      },
-      "prodcom_code": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null,
-        "description": "Specific PRODCOM dataset code to pin for the Net Import Reliance and Trade Intensity tabs, when a single CN code maps to several. Ignored elsewhere.",
-        "title": "Prodcom Code"
-      },
-      "product": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          }
-        ],
-        "description": "Combined Nomenclature customs code(s), 2–8 digits, or the literal 'TOTAL' meta-aggregate (all products combined). Pass a list to aggregate several codes: their volumes are summed and prices volume-weighted across every tab — except the Cross-section views, which keep each code separate.",
-        "examples": [
-          "3801",
-          [
-            "0901",
-            "0902"
-          ],
-          "TOTAL"
-        ],
-        "title": "Product"
-      },
-      "remove_outliers": {
-        "default": true,
-        "description": "Drop extreme unit-price outliers before computing weighted-average prices.",
-        "title": "Remove Outliers",
-        "type": "boolean"
-      },
-      "reporter": {
-        "default": "European Union",
-        "description": "Declaring entity: an EU member state, an EU candidate country, Northern Ireland ('XI'), or one of the three aggregate presets ('European Union', 'Euro area', 'EU candidate countries'), or a predefined reporter group name.",
-        "title": "Reporter",
-        "type": "string"
-      },
-      "reporter_members": {
-        "anyOf": [
-          {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null,
-        "description": "Explicit member countries for a custom reporter group. Each entry must be an EU member state, EU candidate country, or Northern Ireland. When more than one member is supplied the frame is aggregated into a synthetic group named after 'reporter'.",
-        "title": "Reporter Members"
-      }
-    },
-    "required": [
-      "product"
-    ],
-    "title": "DashboardQuery",
-    "type": "object"
-  }
-}

addedInput schema / additionalProperties
```
Added value: +false
```
removedInput schema / properties / compact / title
```
Removed value: -"Compact"
```
removedInput schema / properties / n_subcodes / title
```
Removed value: -"N Subcodes"
```
removedInput schema / properties / query / $ref
```
Removed value: -"#/$defs/DashboardQuery"
```

addedInput schema / properties / query / properties

Added value: +{
+  "frequency": {
+    "default": "quarter",
+    "description": "Resampling frequency for the series: 'month', 'quarter' or 'year'.",
+    "type": "string"
+  },
+  "include_other": {
+    "default": true,
+    "description": "Bundle entities outside the top-N into a single 'Other' bucket.",
+    "type": "boolean"
+  },
+  "lang": {
+    "default": "en",
+    "description": "Language for translated labels in the response (en, de, fr, es, it, ro).",
+    "type": "string"
+  },
+  "midpoint": {
+    "anyOf": [
+      {
+        "type": "string"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null,
+    "description": "Split point 'YYYY-MM' for the Pattern Shifts tab: the window is cut in two here and the before/after change per entity is reported. Defaults to the middle of the period when omitted."
+  },
+  "n_top": {
+    "default": 7,
+    "description": "Number of top entities (by volume/value) to break out individually in charts.",
+    "type": "integer"
+  },
+  "partner_set": {
+    "default": "non-EU countries",
+    "description": "Named partner preset, e.g. 'non-EU countries', 'EU countries', 'all countries', or a predefined partner group.",
+    "type": "string"
+  },
+  "partners": {
+    "anyOf": [
+      {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null,
+    "description": "Explicit partner-country list that overrides 'partner_set' when present."
+  },
+  "period_end": {
+    "description": "Inclusive end of the analysis window, ISO month 'YYYY-MM'. Defaults to roughly three months ago — the latest period Eurostat typically has fully reported.",
+    "type": "string"
+  },
+  "period_start": {
+    "default": "2015-01",
+    "description": "Inclusive start of the analysis window, ISO month 'YYYY-MM'.",
+    "type": "string"
+  },
+  "prodcom_code": {
+    "anyOf": [
+      {
+        "type": "string"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null,
+    "description": "Specific PRODCOM dataset code to pin for the Net Import Reliance and Trade Intensity tabs, when a single CN code maps to several. Ignored elsewhere."
+  },
+  "product": {
+    "anyOf": [
+      {
+        "type": "string"
+      },
+      {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      }
+    ],
+    "description": "Combined Nomenclature customs code(s), 2–8 digits, or the literal 'TOTAL' meta-aggregate (all products combined). Pass a list to aggregate several codes: their volumes are summed and prices volume-weighted across every tab — except the Cross-section views, which keep each code separate.",
+    "examples": [
+      "3801",
+      [
+        "0901",
+        "0902"
+      ],
+      "TOTAL"
+    ]
+  },
+  "remove_outliers": {
+    "default": true,
+    "description": "Drop extreme unit-price outliers before computing weighted-average prices.",
+    "type": "boolean"
+  },
+  "reporter": {
+    "default": "European Union",
+    "description": "Declaring entity: an EU member state, an EU candidate country, Northern Ireland ('XI'), or one of the three aggregate presets ('European Union', 'Euro area', 'EU candidate countries'), or a predefined reporter group name.",
+    "type": "string"
+  },
+  "reporter_members": {
+    "anyOf": [
+      {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null,
+    "description": "Explicit member countries for a custom reporter group. Each entry must be an EU member state, EU candidate country, or Northern Ireland. When more than one member is supplied the frame is aggregated into a synthetic group named after 'reporter'."
+  }
+}

addedInput schema / properties / query / required
```
Added value: +[
+  "product"
+]
```
addedInput schema / properties / query / type
```
Added value: +"object"
```

removedInput schema / title

Removed value: -"get_concentration_compareArguments"

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "type": "object"
+}

First observedJul 21, 2026

TDQS

A3.9/5.0

Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses the key behavioral trait of producing one HHI line per sub-product, but does not mention other behavioral aspects such as data source, response structure, or any side effects. The output schema helps fill gaps, but the description alone is limited.

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?

The description is a single, focused sentence that front-loads the core concept (HHI comparison across sub-products) and the key differentiator (line per sub-product). It is concise and every phrase contributes meaning, with no redundant content.

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

Completeness3/5

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

While the output schema provides rich descriptions for all parameters, the description itself is minimal. It lacks guidance on when to use this tool versus siblings like get_concentration or get_concentration_map, and does not mention that the query body is shared with other endpoints (though the schema does). Given the tool's moderate complexity, the description is adequate but not complete.

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 baseline is 3. The description's phrase 'one HHI line per sub-product' adds little beyond what the n_subcodes parameter description already states ('Max number of sub-products to plot as separate HHI lines'). No additional parameter semantics are provided in the description.

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 states the specific verb 'compared' and resource 'Partner-concentration (HHI) across sub-products', clearly distinguishing it from per-flow tools. It explicitly says 'one HHI line per sub-product rather than per flow' and the intended purpose 'to see which sub-products drive a parent code's overall concentration', which differentiates it from siblings like get_concentration.

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?

The description provides clear usage context by contrasting with per-flow analysis ('rather than per flow') and stating the goal of identifying which sub-products drive concentration. However, it does not explicitly name alternative tools or state when not to use this tool, so it does not fully meet the 'explicit alternatives' bar.

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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