EU Trade Explorer

Get Concentration Map

get_concentration_map

Cross-sectional HHI per country for one year -- the choropleth counterpart of get_concentration. 'partner' entity_level = for every EU member state, HHI of its trade across partners; 'reporter' = for every partner, HHI of its trade across EU member states (subject to the Rotterdam/Antwerp entry-point distortion).

Input Schema

TableJSON Schema

Name	Required	Description	Default
`year`	No	Year for the (cross-sectional) snapshot. Defaults to the latest full year with data.
`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.
`entity_level`	No	Dimension to analyse. 'partner' -- how concentrated/volatile is the reporter's trade across its trading partners? 'reporter' -- how concentrated/volatile is a given partner's trade across EU member states? When 'reporter', 'partner_name' is required.	partner
`partner_name`	No	Partner country name (English). Required when entity_level='reporter'.

Output Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedSep 30, 2026

changedInput schema / properties / year / description

Previous value: -"Year for the snapshot. Defaults to the latest full year with data."New value: +"Year for the (cross-sectional) snapshot. Defaults to the latest full year with data."

Changed12 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 / entity_level / title
```
Removed value: -"Entity Level"
```
removedInput schema / properties / partner_name / title
```
Removed value: -"Partner Name"
```
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 / properties / year / title
```
Removed value: -"Year"
```

removedInput schema / title

Removed value: -"get_concentration_mapArguments"

changedOutput schema / (root)

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

First observedJul 21, 2026

TDQS

A4.3/5.0

Behavior4/5

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

With no annotations supplied, the description must carry the behavioral burden, and it does disclose two meaningful traits: the result is a single-year cross-section (not a series), and the 'reporter' mode carries the Rotterdam/Antwerp entry-point distortion caveat. It never states the response shape or that it is a pure read, but the output schema covers returns and 'get_' implies read-only.

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?

Two sentences, front-loaded with the core deliverable, and every clause carries information (scope, sibling relation, both modes, the distortion caveat). The second sentence is dense but not padded.

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?

For an analytical endpoint with a rich query body and an output schema, the description supplies the essentials: what is computed, the unit of aggregation, the two mode semantics, and a notable caveat. It does not enumerate how entity_level interacts with partner_name or the year default, but the schema covers those explicitly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3, but the description actually adds meaning beyond the schema's own field text: it explains the semantics of 'partner' vs 'reporter' and attaches a data-quality caveat to the 'reporter' mode. It leaves the remaining query fields to the schema, which is reasonable given full coverage.

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 computed quantity (cross-sectional HHI), the resource (per country, one year), and explicitly names its sibling relationship ('the choropleth counterpart of get_concentration'). It also unpacks both entity_level modes, so an agent can tell it apart from get_concentration and get_concentration_compare without opening the schema.

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 frames the tool as the map/choropleth variant of get_concentration and tells the agent which entity_level to pick and what each yields, which is real selection guidance. It stops short of an explicit when-not-to-use rule (e.g. vs get_concentration_compare or get_map_data), so not a full 5.

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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