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UNESCO Institute for Statistics (UIS) MCP Server

by SidneyBissoli
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TypeScript
Remote

List UNESCO UIS geo units

uis_list_geo_units
Read-onlyIdempotent

List valid geographic codes (countries and regions) for UIS data queries. Filter by name, code, or type to use with uis_get_data; no statistics returned.

Instructions

Valid geographic codes for uis_get_data: 462 geo units — countries (NATIONAL, ISO alpha-3 codes like BRA) and regional aggregates (REGIONAL). Filter by name/code and type. Does not return statistical values; these codes apply only to uis_get_data, not to other statistical servers.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
typeNoOnly countries (NATIONAL) or only regional aggregates
limitNoMaximum results (default 100)
offsetNoResults to skip, for pagination (default 0)
searchNoCase-insensitive filter on name, or exact code (e.g. "BRA")
provenance_modeNoProvenance verbosity: 'concise' (default — source, url, vintage, retrieval date, citation, license) or 'detailed' (full canonical block with dataset, dimension key and notices)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
offsetYes
showingYes
has_moreYes
geo_unitsYes
provenanceYesProvenance block (contract v1.1). concise (default): source, source_url, data_vintage, retrieved_at, retrieval, citation, license; detailed: the full canonical block (dataset, dimension_key, notices, served_from_cache, ...). retrieval is the origin diagnostic of this call — requests made to the UIS Data API, attempts including retries, anomalies overcome (timeout, network, rate_limited, http_5xx, http_4xx, malformed_body) and unstable (true when anything had to be retried: treat the figures as obtained with difficulty); null when nothing was fetched from the UIS (catalogue or cached answer)
attributionYes
next_offsetNo
total_matchesYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.3.1
    • changedOutput schema / properties / provenance / anyOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "citation": {
-        "type": "string"
-      },
-      "data_vintage": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "license": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "retrieval": {
-        "anyOf": [
-          {
-            "additionalProperties": false,
-            "properties": {
-              "anomalies": {
-                "items": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "count": {
-                      "maximum": 9007199254740991,
-                      "minimum": 1,
-                      "type": "integer"
-                    },
-                    "kind": {
-                      "enum": [
-                        "timeout",
-                        "network",
-                        "http_4xx",
-                        "http_5xx",
-                        "rate_limited",
-                        "malformed_body"
-                      ],
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "kind",
-                    "count"
-                  ],
-                  "type": "object"
-                },
-                "type": "array"
-              },
-              "attempts": {
-                "maximum": 9007199254740991,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "requests": {
-                "maximum": 9007199254740991,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "unstable": {
-                "type": "boolean"
-              }
-            },
-            "required": [
-              "requests",
-              "attempts",
-              "anomalies",
-              "unstable"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "retrieved_at": {
-        "type": "string"
-      },
-      "source": {
-        "type": "string"
-      },
-      "source_url": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "source",
-      "source_url",
-      "data_vintage",
-      "retrieved_at",
-      "retrieval",
-      "citation",
-      "license"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "api_version": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "citation": {
-        "type": "string"
-      },
-      "contract_version": {
-        "const": "1.1",
-        "type": "string"
-      },
-      "data_vintage": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "dataset": {
-        "additionalProperties": false,
-        "properties": {
-          "id": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "name": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "version": {
-            "type": [
-              "string",
-              "null"
-            ]
-          }
-        },
-        "required": [
-          "id",
-          "version",
-          "name"
-        ],
-        "type": "object"
-      },
-      "derivation_note": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "derived": {
-        "type": "boolean"
-      },
-      "dimension_key": {
-        "anyOf": [
-          {
-            "additionalProperties": {
-              "type": "string"
-            },
-            "propertyNames": {
-              "type": "string"
-            },
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "field_sources": {
-        "anyOf": [
-          {
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "data_vintage": {
-                  "type": [
-                    "string",
-                    "null"
-                  ]
-                },
-                "dataset_id": {
-                  "type": [
-                    "string",
-                    "null"
-                  ]
-                },
-                "fields": {
-                  "items": {
-                    "type": "string"
-                  },
-                  "minItems": 1,
-                  "type": "array"
-                },
-                "retrieved_at": {
-                  "type": [
-                    "string",
-                    "null"
-                  ]
-                },
-                "source_url": {
-                  "type": "string"
-                }
-              },
-              "required": [
-                "fields",
-                "source_url",
-                "dataset_id",
-                "data_vintage",
-                "retrieved_at"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "license": {
-        "additionalProperties": false,
-        "properties": {
-          "id": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "name": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "terms_url": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "url": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "verified_at": {
-            "type": [
-              "string",
-              "null"
-            ]
-          }
-        },
-        "required": [
-          "id",
-          "name",
-          "url",
-          "terms_url",
-          "verified_at"
-        ],
-        "type": "object"
-      },
-      "notices": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "retrieval": {
-        "anyOf": [
-          {
-            "additionalProperties": false,
-            "properties": {
-              "anomalies": {
-                "items": {
-                  "additionalProperties": false,
-                  "properties": {
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-                      "type": "integer"
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-                        "http_4xx",
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-                        "rate_limited",
-                        "malformed_body"
-                      ],
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "kind",
-                    "count"
-                  ],
-                  "type": "object"
-                },
-                "type": "array"
-              },
-              "attempts": {
-                "maximum": 9007199254740991,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "requests": {
-                "maximum": 9007199254740991,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "unstable": {
-                "type": "boolean"
-              }
-            },
-            "required": [
-              "requests",
-              "attempts",
-              "anomalies",
-              "unstable"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "retrieved_at": {
-        "type": "string"
-      },
-      "served_from_cache": {
-        "type": [
-          "boolean",
-          "null"
-        ]
-      },
-      "source": {
-        "additionalProperties": false,
-        "properties": {
-          "agency": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "database": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "endpoint": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "name": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "name",
-          "agency",
-          "database",
-          "endpoint"
-        ],
-        "type": "object"
-      },
-      "source_url": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "contract_version",
-      "source",
-      "dataset",
-      "dimension_key",
-      "data_vintage",
-      "retrieved_at",
-      "source_url",
-      "api_version",
-      "license",
-      "citation",
-      "notices",
-      "derived",
-      "derivation_note",
-      "served_from_cache",
-      "retrieval",
-      "field_sources"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "citation": {
+        "type": "string"
+      },
+      "data_vintage": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "field_sources": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "data_vintage": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "dataset_id": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "fields": {
+              "items": {
+                "type": "string"
+              },
+              "minItems": 1,
+              "type": "array"
+            },
+            "retrieved_at": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "served_from_cache": {
+              "type": [
+                "boolean",
+                "null"
+              ]
+            },
+            "source_url": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "fields",
+            "source_url",
+            "dataset_id",
+            "data_vintage",
+            "retrieved_at"
+          ],
+          "type": "object"
+        },
+        "minItems": 1,
+        "type": "array"
+      },
+      "license": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "retrieval": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "anomalies": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "count": {
+                      "maximum": 9007199254740991,
+                      "minimum": 1,
+                      "type": "integer"
+                    },
+                    "kind": {
+                      "enum": [
+                        "timeout",
+                        "network",
+                        "http_4xx",
+                        "http_5xx",
+                        "rate_limited",
+                        "malformed_body"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "count"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "attempts": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "requests": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "unstable": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "requests",
+              "attempts",
+              "anomalies",
+              "unstable"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "retrieved_at": {
+        "type": "string"
+      },
+      "source": {
+        "type": "string"
+      },
+      "source_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "source",
+      "source_url",
+      "data_vintage",
+      "retrieved_at",
+      "retrieval",
+      "citation",
+      "license"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "api_version": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "citation": {
+        "type": "string"
+      },
+      "contract_version": {
+        "enum": [
+          "1.1",
+          "1.2"
+        ],
+        "type": "string"
+      },
+      "data_vintage": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "dataset": {
+        "additionalProperties": false,
+        "properties": {
+          "id": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "name": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "version": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "id",
+          "version",
+          "name"
+        ],
+        "type": "object"
+      },
+      "derivation_note": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "derived": {
+        "type": "boolean"
+      },
+      "dimension_key": {
+        "anyOf": [
+          {
+            "additionalProperties": {
+              "type": "string"
+            },
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "field_sources": {
+        "anyOf": [
+          {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "data_vintage": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "dataset_id": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "fields": {
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1,
+                  "type": "array"
+                },
+                "retrieved_at": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "served_from_cache": {
+                  "type": [
+                    "boolean",
+                    "null"
+                  ]
+                },
+                "source_url": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "fields",
+                "source_url",
+                "dataset_id",
+                "data_vintage",
+                "retrieved_at"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "license": {
+        "additionalProperties": false,
+        "properties": {
+          "id": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "name": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "terms_url": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "url": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "verified_at": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "id",
+          "name",
+          "url",
+          "terms_url",
+          "verified_at"
+        ],
+        "type": "object"
+      },
+      "notices": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "retrieval": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "anomalies": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "count": {
+                      "maximum": 9007199254740991,
+                      "minimum": 1,
+                      "type": "integer"
+                    },
+                    "kind": {
+                      "enum": [
+                        "timeout",
+                        "network",
+                        "http_4xx",
+                        "http_5xx",
+                        "rate_limited",
+                        "malformed_body"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "count"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "attempts": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "requests": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "unstable": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "requests",
+              "attempts",
+              "anomalies",
+              "unstable"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "retrieved_at": {
+        "type": "string"
+      },
+      "served_from_cache": {
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "source": {
+        "additionalProperties": false,
+        "properties": {
+          "agency": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "database": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "endpoint": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "name": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "name",
+          "agency",
+          "database",
+          "endpoint"
+        ],
+        "type": "object"
+      },
+      "source_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "contract_version",
+      "source",
+      "dataset",
+      "dimension_key",
+      "data_vintage",
+      "retrieved_at",
+      "source_url",
+      "api_version",
+      "license",
+      "citation",
+      "notices",
+      "derived",
+      "derivation_note",
+      "served_from_cache",
+      "retrieval",
+      "field_sources"
+    ],
+    "type": "object"
+  }
+]
  2. Changed2 schema fields changedv1.0.1
    • addedOutput schema / properties / provenance / anyOf
      Added value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "citation": {
+        "type": "string"
+      },
+      "data_vintage": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "license": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "retrieval": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "anomalies": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "count": {
+                      "maximum": 9007199254740991,
+                      "minimum": 1,
+                      "type": "integer"
+                    },
+                    "kind": {
+                      "enum": [
+                        "timeout",
+                        "network",
+                        "http_4xx",
+                        "http_5xx",
+                        "rate_limited",
+                        "malformed_body"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "count"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "attempts": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "requests": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "unstable": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "requests",
+              "attempts",
+              "anomalies",
+              "unstable"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "retrieved_at": {
+        "type": "string"
+      },
+      "source": {
+        "type": "string"
+      },
+      "source_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "source",
+      "source_url",
+      "data_vintage",
+      "retrieved_at",
+      "retrieval",
+      "citation",
+      "license"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "api_version": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "citation": {
+        "type": "string"
+      },
+      "contract_version": {
+        "const": "1.1",
+        "type": "string"
+      },
+      "data_vintage": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "dataset": {
+        "additionalProperties": false,
+        "properties": {
+          "id": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "name": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "version": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "id",
+          "version",
+          "name"
+        ],
+        "type": "object"
+      },
+      "derivation_note": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "derived": {
+        "type": "boolean"
+      },
+      "dimension_key": {
+        "anyOf": [
+          {
+            "additionalProperties": {
+              "type": "string"
+            },
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "field_sources": {
+        "anyOf": [
+          {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "data_vintage": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "dataset_id": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "fields": {
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1,
+                  "type": "array"
+                },
+                "retrieved_at": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "source_url": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "fields",
+                "source_url",
+                "dataset_id",
+                "data_vintage",
+                "retrieved_at"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "license": {
+        "additionalProperties": false,
+        "properties": {
+          "id": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "name": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "terms_url": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "url": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "verified_at": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "id",
+          "name",
+          "url",
+          "terms_url",
+          "verified_at"
+        ],
+        "type": "object"
+      },
+      "notices": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "retrieval": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "anomalies": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "count": {
+                      "maximum": 9007199254740991,
+                      "minimum": 1,
+                      "type": "integer"
+                    },
+                    "kind": {
+                      "enum": [
+                        "timeout",
+                        "network",
+                        "http_4xx",
+                        "http_5xx",
+                        "rate_limited",
+                        "malformed_body"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "count"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "attempts": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "requests": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "unstable": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "requests",
+              "attempts",
+              "anomalies",
+              "unstable"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "retrieved_at": {
+        "type": "string"
+      },
+      "served_from_cache": {
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "source": {
+        "additionalProperties": false,
+        "properties": {
+          "agency": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "database": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "endpoint": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "name": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "name",
+          "agency",
+          "database",
+          "endpoint"
+        ],
+        "type": "object"
+      },
+      "source_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "contract_version",
+      "source",
+      "dataset",
+      "dimension_key",
+      "data_vintage",
+      "retrieved_at",
+      "source_url",
+      "api_version",
+      "license",
+      "citation",
+      "notices",
+      "derived",
+      "derivation_note",
+      "served_from_cache",
+      "retrieval",
+      "field_sources"
+    ],
+    "type": "object"
+  }
+]
    • addedOutput schema / properties / provenance / description
      Added value: +"Provenance block (contract v1.1). concise (default): source, source_url, data_vintage, retrieved_at, retrieval, citation, license; detailed: the full canonical block (dataset, dimension_key, notices, served_from_cache, ...). retrieval is the origin diagnostic of this call — requests made to the UIS Data API, attempts including retries, anomalies overcome (timeout, network, rate_limited, http_5xx, http_4xx, malformed_body) and unstable (true when anything had to be retried: treat the figures as obtained with difficulty); null when nothing was fetched from the UIS (catalogue or cached answer)"
  3. First observedv0.4.0

TDQS

A4.3/5.0
Behavior4/5

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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds real value beyond that by clarifying that no statistical values are returned and by scoping the codes to uis_get_data only, though it says nothing about pagination behavior.

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?

Three tight sentences, front-loaded with the core identity of the resource and followed by scope constraints. Every sentence carries information and none is redundant with the schema.

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?

With an output schema, full parameter coverage, and safety annotations, the description only needs to add scope and consumer context, which it does. An agent has everything required to select and invoke this tool correctly.

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 all five parameters are already documented in the schema. The description's mention of 'filter by name/code and type' maps onto the search and type parameters but adds no syntax or format detail beyond the schema, making the baseline 3 appropriate.

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 names the resource precisely (462 geo units, split into NATIONAL countries with ISO alpha-3 codes and REGIONAL aggregates) and states exactly what the tool produces. It also ties the output to its consumer, uis_get_data, which distinguishes it from the generic 'fetch'/'search' siblings.

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 gives a clear scope rule: these codes apply only to uis_get_data and not to other statistical servers, and that filtering is available by name/code and type. It stops short of an explicit 'call this before uis_get_data to resolve a code' instruction, but the intended usage is strongly implied.

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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