Criora: climate & disaster risk for any place

Rank countries by climate and disaster risk

rank_countries

Read-onlyIdempotent

The countries most or least at climate and disaster risk, overall, on one dimension or on one hazard or other indicator, optionally within a region, subregion or income group, each with its score and world rank (a filter narrows the list, not the rank).

Use for "the most climate-exposed countries", "the riskiest countries in Southern Asia", "which countries are most exposed to river flooding", "where do cyclones reach the most people". Named countries: compare_countries; this week's weather: rank_by_forecast.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "rank_countries"
  }
}

Input Schema

Name	Required	Description	Default
`limit`	No	How many countries to list
`order`	No	Most at risk first, or least at risk first	highest_risk
`region`	No	Only countries in this UN region, e.g. Asia
`dimension`	No	The score to rank by	overall
`indicator`	No	Rank on this indicator instead of a score: hazard_flood (river flooding), hazard_coastal_flood, hazard_cyclone, hazard_drought, hazard_earthquake, hazard_tsunami, hazard_epidemic, water_stress, or any key fetch catalog:indicators lists
`subregion`	No	Only countries in this UN M49 subregion, e.g. Southern Asia
`income_group`	No	Only countries in this World Bank income group, e.g. Low income
`response_format`	No	concise (default) answers the question; detailed adds every field the sources give	concise

Output Schema

Name	Required	Description	Default
`order`	Yes
`credit`	Yes
`listed`	Yes
`filters`	Yes
`matched`	Yes
`no_score`	Yes
`countries`	Yes
`dimension`	Yes
`indicator`	Yes
`truncated`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed64 schema fields changedNov 5, 2026
- removedOutput schema / $defs / Credit / additionalProperties
```
Removed value: -true
```
- removedOutput schema / $defs / Credit / properties / attribution / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / Credit / properties / attribution / default
```
Removed value: -null
```
- removedOutput schema / $defs / Credit / properties / attribution / description
```
Removed value: -"The credit the licence asks for when it is retold"
```
- addedOutput schema / $defs / Credit / properties / attribution / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / Credit / properties / licence / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / Credit / properties / licence / default
```
Removed value: -null
```
- addedOutput schema / $defs / Credit / properties / licence / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / Credit / properties / name / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / Credit / properties / name / default
```
Removed value: -null
```
- removedOutput schema / $defs / Credit / properties / name / description
```
Removed value: -"The feed's name as it is cited"
```
- addedOutput schema / $defs / Credit / properties / name / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / Filters / properties / income_group / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / $defs / Filters / properties / income_group / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / Filters / properties / region / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / $defs / Filters / properties / region / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / Filters / properties / subregion / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / $defs / Filters / properties / subregion / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / RankedCountry / properties / country_url / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / RankedCountry / properties / country_url / default
```
Removed value: -null
```
- removedOutput schema / $defs / RankedCountry / properties / country_url / description
```
Removed value: -"Detailed only"
```
- addedOutput schema / $defs / RankedCountry / properties / country_url / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / RankedCountry / properties / data_year / anyOf
```
Removed value: -[
-  {
-    "type": "integer"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / RankedCountry / properties / data_year / default
```
Removed value: -null
```
- addedOutput schema / $defs / RankedCountry / properties / data_year / type
```
Added value: +[
+  "integer",
+  "null"
+]
```
- removedOutput schema / $defs / RankedCountry / properties / income_group / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / RankedCountry / properties / income_group / default
```
Removed value: -null
```
- removedOutput schema / $defs / RankedCountry / properties / income_group / description
```
Removed value: -"Detailed only"
```
- addedOutput schema / $defs / RankedCountry / properties / income_group / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / RankedCountry / properties / level / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / RankedCountry / properties / level / default
```
Removed value: -null
```
- removedOutput schema / $defs / RankedCountry / properties / level / description
```
Removed value: -"The score's risk class; on a dimension only"
```
- addedOutput schema / $defs / RankedCountry / properties / level / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / RankedCountry / properties / rank_by_dimension / default
```
Removed value: -null
```
- removedOutput schema / $defs / RankedCountry / properties / rank_by_indicator / default
```
Removed value: -null
```
- removedOutput schema / $defs / RankedCountry / properties / region / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / RankedCountry / properties / region / default
```
Removed value: -null
```
- removedOutput schema / $defs / RankedCountry / properties / region / description
```
Removed value: -"Detailed only"
```
- addedOutput schema / $defs / RankedCountry / properties / region / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / RankedCountry / properties / subregion / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / RankedCountry / properties / subregion / default
```
Removed value: -null
```
- removedOutput schema / $defs / RankedCountry / properties / subregion / description
```
Removed value: -"Detailed only"
```
- addedOutput schema / $defs / RankedCountry / properties / subregion / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / RankedCountry / properties / unit / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / RankedCountry / properties / unit / default
```
Removed value: -null
```
- addedOutput schema / $defs / RankedCountry / properties / unit / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / $defs / RankedCountry / properties / value / anyOf
```
Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / $defs / RankedCountry / properties / value / default
```
Removed value: -null
```
- removedOutput schema / $defs / RankedCountry / properties / value / description
```
Removed value: -"The indicator's own figure, in unit"
```
- addedOutput schema / $defs / RankedCountry / properties / value / type
```
Added value: +[
+  "number",
+  "null"
+]
```
- removedOutput schema / $defs / Truncated / description
```
Removed value: -"Set when an answer was held under its size: the tail of its main list left out."
```
- removedOutput schema / $defs / Truncated / properties / field / description
```
Removed value: -"The answer's list that was cut"
```
- removedOutput schema / $defs / Truncated / properties / left_out / description
```
Removed value: -"How many of its entries, the least important, were left out"
```
- removedOutput schema / $defs / Truncated / properties / left_out_names / default
```
Removed value: -null
```
- removedOutput schema / $defs / Truncated / properties / left_out_names / description
```
Removed value: -"Each entry left out, where the list is not ordered by importance"
```
- removedOutput schema / $defs / Truncated / properties / why / description
```
Removed value: -"The limit, and how to ask for the rest"
```
- removedOutput schema / properties / credit / description
```
Removed value: -"How a retelling credits the answer: Source: Criora with a link to the page the answer is about, then each originator whose data it quotes in the words its licence asks for. Concise, each credit once; detailed, by source with its name and licence, criora first"
```
- removedOutput schema / properties / dimension / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- removedOutput schema / properties / dimension / description
```
Removed value: -"The score ranked on; null when an indicator is"
```
- addedOutput schema / properties / dimension / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / matched / description
```
Removed value: -"Every country that passed the filters"
```
- removedOutput schema / properties / no_score / description
```
Removed value: -"Countries that passed the filters but have no score on the dimension"
```
- removedOutput schema / properties / truncated / default
```
Removed value: -null
```
- removedOutput schema / properties / truncated / description
```
Removed value: -"Absent unless the answer was cut to fit"
```

Changed74 schema fields changedNov 2, 2026

removedInput schema / properties / dimension / title
```
Removed value: -"Dimension"
```

removedInput schema / properties / income_group / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedInput schema / properties / income_group / default
```
Removed value: -null
```
removedInput schema / properties / income_group / title
```
Removed value: -"Income Group"
```
addedInput schema / properties / income_group / type
```
Added value: +"string"
```

addedInput schema / properties / indicator

Added value: +{
+  "description": "Rank on this indicator instead of a score: hazard_flood (river flooding), hazard_coastal_flood, hazard_cyclone, hazard_drought, hazard_earthquake, hazard_tsunami, hazard_epidemic, water_stress, or any key fetch catalog:indicators lists",
+  "type": "string"
+}

removedInput schema / properties / limit / title
```
Removed value: -"Limit"
```
removedInput schema / properties / order / title
```
Removed value: -"Order"
```

removedInput schema / properties / region / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedInput schema / properties / region / default
```
Removed value: -null
```
removedInput schema / properties / region / title
```
Removed value: -"Region"
```
addedInput schema / properties / region / type
```
Added value: +"string"
```

addedInput schema / properties / response_format

Added value: +{
+  "default": "concise",
+  "description": "concise (default) answers the question; detailed adds every field the sources give",
+  "enum": [
+    "concise",
+    "detailed"
+  ],
+  "type": "string"
+}

removedInput schema / properties / subregion / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedInput schema / properties / subregion / default
```
Removed value: -null
```
removedInput schema / properties / subregion / title
```
Removed value: -"Subregion"
```
addedInput schema / properties / subregion / type
```
Added value: +"string"
```

removedInput schema / title

Removed value: -"rank_countriesArguments"

addedOutput schema / $defs / Credit

Added value: +{
+  "additionalProperties": true,
+  "properties": {
+    "attribution": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "The credit the licence asks for when it is retold"
+    },
+    "licence": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null
+    },
+    "name": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "The feed's name as it is cited"
+    }
+  },
+  "type": "object"
+}

removedOutput schema / $defs / Filters / properties / income_group / title
```
Removed value: -"Income Group"
```
removedOutput schema / $defs / Filters / properties / region / title
```
Removed value: -"Region"
```
removedOutput schema / $defs / Filters / properties / subregion / title
```
Removed value: -"Subregion"
```
removedOutput schema / $defs / Filters / title
```
Removed value: -"Filters"
```
removedOutput schema / $defs / Rank / properties / note / title
```
Removed value: -"Note"
```
removedOutput schema / $defs / Rank / properties / of / title
```
Removed value: -"Of"
```
removedOutput schema / $defs / Rank / properties / rank / title
```
Removed value: -"Rank"
```
removedOutput schema / $defs / Rank / title
```
Removed value: -"Rank"
```
removedOutput schema / $defs / RankedCountry / properties / country_code / title
```
Removed value: -"Country Code"
```

addedOutput schema / $defs / RankedCountry / properties / country_url / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

addedOutput schema / $defs / RankedCountry / properties / country_url / default
```
Added value: +null
```
addedOutput schema / $defs / RankedCountry / properties / country_url / description
```
Added value: +"Detailed only"
```
removedOutput schema / $defs / RankedCountry / properties / country_url / title
```
Removed value: -"Country Url"
```
removedOutput schema / $defs / RankedCountry / properties / country_url / type
```
Removed value: -"string"
```

addedOutput schema / $defs / RankedCountry / properties / data_year

Added value: +{
+  "anyOf": [
+    {
+      "type": "integer"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedOutput schema / $defs / RankedCountry / properties / income_group / default
```
Added value: +null
```
addedOutput schema / $defs / RankedCountry / properties / income_group / description
```
Added value: +"Detailed only"
```
removedOutput schema / $defs / RankedCountry / properties / income_group / title
```
Removed value: -"Income Group"
```

addedOutput schema / $defs / RankedCountry / properties / level / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

addedOutput schema / $defs / RankedCountry / properties / level / default
```
Added value: +null
```
addedOutput schema / $defs / RankedCountry / properties / level / description
```
Added value: +"The score's risk class; on a dimension only"
```
removedOutput schema / $defs / RankedCountry / properties / level / title
```
Removed value: -"Level"
```
removedOutput schema / $defs / RankedCountry / properties / level / type
```
Removed value: -"string"
```
removedOutput schema / $defs / RankedCountry / properties / name / title
```
Removed value: -"Name"
```
removedOutput schema / $defs / RankedCountry / properties / rank_by_dimension / $ref
```
Removed value: -"#/$defs/Rank"
```

addedOutput schema / $defs / RankedCountry / properties / rank_by_dimension / anyOf

Added value: +[
+  {
+    "$ref": "#/$defs/Rank"
+  },
+  {
+    "type": "null"
+  }
+]

addedOutput schema / $defs / RankedCountry / properties / rank_by_dimension / default
```
Added value: +null
```

addedOutput schema / $defs / RankedCountry / properties / rank_by_indicator

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/Rank"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedOutput schema / $defs / RankedCountry / properties / region / default
```
Added value: +null
```
addedOutput schema / $defs / RankedCountry / properties / region / description
```
Added value: +"Detailed only"
```
removedOutput schema / $defs / RankedCountry / properties / region / title
```
Removed value: -"Region"
```
removedOutput schema / $defs / RankedCountry / properties / score / title
```
Removed value: -"Score"
```
addedOutput schema / $defs / RankedCountry / properties / subregion / default
```
Added value: +null
```
addedOutput schema / $defs / RankedCountry / properties / subregion / description
```
Added value: +"Detailed only"
```
removedOutput schema / $defs / RankedCountry / properties / subregion / title
```
Removed value: -"Subregion"
```

addedOutput schema / $defs / RankedCountry / properties / unit

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedOutput schema / $defs / RankedCountry / properties / value

Added value: +{
+  "anyOf": [
+    {
+      "type": "number"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "The indicator's own figure, in unit"
+}

changedOutput schema / $defs / RankedCountry / required

Previous value: -[
-  "country_code",
-  "name",
-  "score",
-  "level",
-  "rank_by_dimension",
-  "region",
-  "subregion",
-  "income_group",
-  "country_url"
-]New value: +[
+  "country_code",
+  "name",
+  "score"
+]

removedOutput schema / $defs / RankedCountry / title
```
Removed value: -"RankedCountry"
```

addedOutput schema / $defs / RankedIndicator

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "key": {
+      "type": "string"
+    },
+    "name": {
+      "type": "string"
+    },
+    "note": {
+      "type": "string"
+    },
+    "source": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "key",
+    "name",
+    "source",
+    "note"
+  ],
+  "type": "object"
+}

addedOutput schema / $defs / Truncated

Added value: +{
+  "additionalProperties": false,
+  "description": "Set when an answer was held under its size: the tail of its main list left out.",
+  "properties": {
+    "field": {
+      "description": "The answer's list that was cut",
+      "type": "string"
+    },
+    "left_out": {
+      "description": "How many of its entries, the least important, were left out",
+      "type": "integer"
+    },
+    "left_out_names": {
+      "anyOf": [
+        {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "Each entry left out, where the list is not ordered by importance"
+    },
+    "why": {
+      "description": "The limit, and how to ask for the rest",
+      "type": "string"
+    }
+  },
+  "required": [
+    "field",
+    "left_out",
+    "why"
+  ],
+  "type": "object"
+}

removedOutput schema / properties / countries / title
```
Removed value: -"Countries"
```

addedOutput schema / properties / credit

Added value: +{
+  "anyOf": [
+    {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    {
+      "additionalProperties": {
+        "$ref": "#/$defs/Credit"
+      },
+      "type": "object"
+    }
+  ],
+  "description": "How a retelling credits the answer: Source: Criora with a link to the page the answer is about, then each originator whose data it quotes in the words its licence asks for. Concise, each credit once; detailed, by source with its name and licence, criora first"
+}

addedOutput schema / properties / dimension / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

addedOutput schema / properties / dimension / description

Added value: +"The score ranked on; null when an indicator is"

removedOutput schema / properties / dimension / title
```
Removed value: -"Dimension"
```
removedOutput schema / properties / dimension / type
```
Removed value: -"string"
```

addedOutput schema / properties / indicator

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/RankedIndicator"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

removedOutput schema / properties / listed / title
```
Removed value: -"Listed"
```
removedOutput schema / properties / matched / title
```
Removed value: -"Matched"
```
removedOutput schema / properties / no_score / title
```
Removed value: -"No Score"
```
removedOutput schema / properties / order / title
```
Removed value: -"Order"
```

addedOutput schema / properties / truncated

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/Truncated"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Absent unless the answer was cut to fit"
+}

changedOutput schema / required

Previous value: -[
-  "dimension",
-  "order",
-  "filters",
-  "matched",
-  "listed",
-  "no_score",
-  "countries"
-]New value: +[
+  "credit",
+  "dimension",
+  "indicator",
+  "order",
+  "filters",
+  "matched",
+  "listed",
+  "no_score",
+  "countries"
+]

removedOutput schema / title
```
Removed value: -"CountryRanking"
```

Changed12 schema fields changedOct 13, 2026

changedInput schema / properties / income_group / anyOf

Previous value: -[
-  {
-    "enum": [
-      "Low income",
-      "Lower middle income",
-      "Upper middle income",
-      "High income: OECD",
-      "High income: nonOECD"
-    ],
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

changedInput schema / properties / income_group / description

Previous value: -"Only countries in this World Bank income group"New value: +"Only countries in this World Bank income group, e.g. Low income"

removedInput schema / properties / limit / maximum
```
Removed value: -194
```

changedInput schema / properties / region / anyOf

Previous value: -[
-  {
-    "enum": [
-      "Africa",
-      "Americas",
-      "Asia",
-      "Europe",
-      "Oceania"
-    ],
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

changedInput schema / properties / region / description

Previous value: -"Only countries in this region"New value: +"Only countries in this UN region, e.g. Asia"

changedInput schema / properties / subregion / anyOf

Previous value: -[
-  {
-    "enum": [
-      "Australia and New Zealand",
-      "Caribbean",
-      "Central America",
-      "Central Asia",
-      "Eastern Africa",
-      "Eastern Asia",
-      "Eastern Europe",
-      "Melanesia",
-      "Micronesia",
-      "Middle Africa",
-      "Northern Africa",
-      "Northern America",
-      "Northern Europe",
-      "Polynesia",
-      "South America",
-      "South-Eastern Asia",
-      "Southern Africa",
-      "Southern Asia",
-      "Southern Europe",
-      "Western Africa",
-      "Western Asia",
-      "Western Europe"
-    ],
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

changedInput schema / properties / subregion / description

Previous value: -"Only countries in this UN M49 subregion"New value: +"Only countries in this UN M49 subregion, e.g. Southern Asia"

addedOutput schema / $defs

Added value: +{
+  "Filters": {
+    "additionalProperties": false,
+    "properties": {
+      "income_group": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Income Group"
+      },
+      "region": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Region"
+      },
+      "subregion": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Subregion"
+      }
+    },
+    "required": [
+      "region",
+      "subregion",
+      "income_group"
+    ],
+    "title": "Filters",
+    "type": "object"
+  },
+  "Rank": {
+    "additionalProperties": false,
+    "properties": {
+      "note": {
+        "title": "Note",
+        "type": "string"
+      },
+      "of": {
+        "title": "Of",
+        "type": "integer"
+      },
+      "rank": {
+        "title": "Rank",
+        "type": "integer"
+      }
+    },
+    "required": [
+      "rank",
+      "of",
+      "note"
+    ],
+    "title": "Rank",
+    "type": "object"
+  },
+  "RankedCountry": {
+    "additionalProperties": false,
+    "properties": {
+      "country_code": {
+        "title": "Country Code",
+        "type": "string"
+      },
+      "country_url": {
+        "title": "Country Url",
+        "type": "string"
+      },
+      "income_group": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Income Group"
+      },
+      "level": {
+        "title": "Level",
+        "type": "string"
+      },
+      "name": {
+        "title": "Name",
+        "type": "string"
+      },
+      "rank_by_dimension": {
+        "$ref": "#/$defs/Rank"
+      },
+      "region": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Region"
+      },
+      "score": {
+        "title": "Score",
+        "type": "number"
+      },
+      "subregion": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Subregion"
+      }
+    },
+    "required": [
+      "country_code",
+      "name",
+      "score",
+      "level",
+      "rank_by_dimension",
+      "region",
+      "subregion",
+      "income_group",
+      "country_url"
+    ],
+    "title": "RankedCountry",
+    "type": "object"
+  }
+}

changedOutput schema / additionalProperties
```
Previous value: -trueNew value: +false
```

addedOutput schema / properties

Added value: +{
+  "countries": {
+    "items": {
+      "$ref": "#/$defs/RankedCountry"
+    },
+    "title": "Countries",
+    "type": "array"
+  },
+  "dimension": {
+    "title": "Dimension",
+    "type": "string"
+  },
+  "filters": {
+    "$ref": "#/$defs/Filters"
+  },
+  "listed": {
+    "title": "Listed",
+    "type": "integer"
+  },
+  "matched": {
+    "description": "Every country that passed the filters",
+    "title": "Matched",
+    "type": "integer"
+  },
+  "no_score": {
+    "description": "Countries that passed the filters but have no score on the dimension",
+    "title": "No Score",
+    "type": "integer"
+  },
+  "order": {
+    "enum": [
+      "highest_risk",
+      "lowest_risk"
+    ],
+    "title": "Order",
+    "type": "string"
+  }
+}

addedOutput schema / required

Added value: +[
+  "dimension",
+  "order",
+  "filters",
+  "matched",
+  "listed",
+  "no_score",
+  "countries"
+]

changedOutput schema / title

Previous value: -"rank_countriesDictOutput"New value: +"CountryRanking"

AddedOct 13, 2026

TDQS

A4.7/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety is covered. The description adds a genuinely non-obvious behavioral rule that annotations cannot express: a filter narrows the returned list but not the world rank. It does not discuss pagination or cost, but for a read-only ranking tool that is minor.

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

Conciseness5/5

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

Two sentences plus a use-case/alternative block, all front-loaded with the scope constraint first. No filler; every clause either defines behavior or routes the agent elsewhere.

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?

Eight parameters all carry schema descriptions and three use enums; an output schema exists so return values need no explanation. The description covers the one thing schema and annotations cannot: how filtering interacts with ranking.

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 adds real value beyond the schema: it clarifies that filters affect list membership rather than rank, explains the dimension-vs-indicator distinction ('one dimension or on one hazard or other indicator'), and points to fetch catalog:indicators for the valid indicator key set.

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: ranking countries by climate and disaster risk, either on an overall score, a single dimension, or an individual hazard indicator, with optional region/subregion/income filters. It explicitly names the scope boundaries against siblings (compare_countries for named countries, rank_by_forecast for this week's weather), so an agent can select it without opening another 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?

Provides four concrete trigger phrasings for when this tool applies (most climate-exposed countries, riskiest in Southern Asia, river flooding exposure, cyclone population exposure) and then routes two adjacent intents to the correct alternatives. When-to-use and when-not-to-use are both stated.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

All Criora: climate & disaster risk for any place tools Inspect

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