UNESCO Institute for Statistics (UIS) MCP Server

Deep Research Document

fetch

Read-onlyIdempotent

Retrieve a full UNESCO UIS document by ID from search results, returning Markdown text, title, metadata and canonical URL for citation.

Instructions

Returns the full document for an id obtained from search, as { id, title, text, url, metadata }: text is the readable content (Markdown) and url the canonical public page to cite.

Companion of search in the OpenAI Deep Research contract, over the UNESCO UIS statistics (≈5,000 indicators: education — enrolment, completion, literacy, teachers, spending, SDG 4 —, science/R&D (SDG 9.5), culture (SDG 11.4) and demographic context) catalog. Only ids returned by search are valid; an unknown id returns an error. The uis_* tools remain the tools for data queries.

Behavior: read-only and idempotent — a live GET against the public source when the document needs it.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`id`	Yes	Identifier of a document returned by `search`

Output Schema

TableJSON Schema

Name	Required	Description
`id`	Yes	Unique identifier of the document on this server; what `fetch` takes
`url`	Yes	Canonical public URL of the document — ChatGPT's citation depends on it
`text`	Yes	Full readable content of the document (Markdown)
`title`	Yes	Human-readable title of the document
`metadata`	No	Additional key/value pairs about the document (kind, source, period…)
`provenance`	Yes	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)
`attribution`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedv1.3.1Oct 7, 2026

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": {
-                    "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"
-  }
-]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"
+  }
+]

Changed1 schema field changedv1.2.2Oct 3, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```

Changed2 schema fields changedv1.0.1Oct 2, 2026

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)"

First observedv0.4.0Sep 17, 2026

TDQS

A4.6/5.0

Behavior4/5

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

Annotations already declare readOnly/idempotent/destructive/openWorld, so the safety profile is covered. The description still adds real value beyond them: the error behavior on unknown ids, the fact that it performs a live GET against the public source when needed, and the OpenAI Deep Research contract framing. It stops short of rich detail (rate limits, latency, partial-fetch semantics), so a 4 rather than 5.

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-loads the purpose and return contract in the first sentence, then context, then behavior — a sensible ordering with little waste. The parenthetical catalog of SDG/indicator domains is somewhat decorative, but it does orient the agent to the corpus, so the cost is minor.

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 one-parameter, read-only fetch with an output schema, the description needs to cover provenance, failure behavior, and sibling routing — and it does all three. Return-field documentation is technically redundant given the output schema, but harmless; nothing an agent needs to call this correctly is missing.

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?

The single `id` parameter is already documented at 100% schema coverage, so the baseline is 3. The description adds meaning on top by constraining provenance ('only ids returned by `search` are valid') and reiterating the id's role in the return tuple, which is more than the schema says.

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 and resource ('Returns the full document for an id obtained from `search`') and names the return shape. It explicitly distinguishes itself from `search` (which produces the id) and from the `uis_*` family, so an agent can route 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?

Gives an explicit precondition ('Only ids returned by `search` are valid'), an explicit failure mode ('an unknown id returns an error'), and an explicit when-not: 'The `uis_*` tools remain the tools for data queries.' Both the allowed source and the excluded alternative are spelled out.

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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