DaedalMap Population Estimates

Get Catalog

get_catalog

Read-onlyIdempotent

Discover data packs or geometry families progressively: lite selection, full metric/query inventory, or a raw catalog download URL. Choose one result and call get_pack next. Current catalog: The same geography tools work worldwide across a cataloged baseline of 252 geographic entities, reaching up to Admin 2. Where additional country releases are available, the same calls automatically return deeper administrative tiers or maintained reference families. Additional detail is currently available for Australia, Brazil, Canada, France, Germany, Mexico, United Kingdom, United States.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`detail`	No	Use lite to select a pack, full for expanded metric/query inventories, or download for the complete raw catalog URL.	lite
`loc_id`	No	Optional DaedalMap loc_id for catalog='data'. Combine with time_range to discover packs confirmed for both place and time. For place details without pack filtering, use get_loc_id_info.
`catalog`	No	Catalog family. The geography facade defaults to geometry; other facades default to data.	data
`time_range`	No	Optional inclusive discovery window for catalog='data'. At least one bound is required.
`country_scope`	No	Optional ISO3 focus for catalog='geometry' with detail='lite'.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`error`	No
`packs`	No
`detail`	No
`reason`	No
`catalog`	No
`guidance`	No
`warnings`	No
`next_step`	No
`pack_count`	No
`provenance`	No
`request_id`	No
`download_url`	No
`generated_at`	No
`clarification`	No
`tool_families`	No
`catalog_version`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedSep 23, 2026

addedInput schema / properties / loc_id

Added value: +{
+  "description": "Optional DaedalMap loc_id for catalog='data'. Combine with time_range to discover packs confirmed for both place and time. For place details without pack filtering, use get_loc_id_info.",
+  "type": "string"
+}

addedInput schema / properties / time_range

Added value: +{
+  "additionalProperties": false,
+  "description": "Optional inclusive discovery window for catalog='data'. At least one bound is required.",
+  "properties": {
+    "end": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "integer"
+        }
+      ]
+    },
+    "start": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "integer"
+        }
+      ]
+    }
+  },
+  "type": "object"
+}

Changed9 schema fields changedSep 21, 2026

addedInput schema / properties / catalog

Added value: +{
+  "default": "data",
+  "description": "Catalog family. The geography facade defaults to geometry; other facades default to data.",
+  "enum": [
+    "data",
+    "geometry"
+  ],
+  "type": "string"
+}

addedInput schema / properties / country_scope

Added value: +{
+  "description": "Optional ISO3 focus for catalog='geometry' with detail='lite'.",
+  "type": "string"
+}

addedInput schema / properties / detail

Added value: +{
+  "default": "lite",
+  "description": "Use lite to select a pack, full for expanded metric/query inventories, or download for the complete raw catalog URL.",
+  "enum": [
+    "lite",
+    "full",
+    "download"
+  ],
+  "type": "string"
+}

changedOutput schema / anyOf

Previous value: -[
-  {
-    "required": [
-      "packs"
-    ]
-  },
-  {
-    "required": [
-      "error"
-    ]
-  }
-]New value: +[
+  {
+    "required": [
+      "catalog",
+      "detail"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / catalog

Added value: +{
+  "enum": [
+    "data",
+    "geometry"
+  ],
+  "type": "string"
+}

addedOutput schema / properties / detail

Added value: +{
+  "enum": [
+    "lite",
+    "full",
+    "download"
+  ],
+  "type": "string"
+}

addedOutput schema / properties / download_url
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / next_step / anyOf

Added value: +[
+  {
+    "required": [
+      "action"
+    ]
+  },
+  {
+    "required": [
+      "tool"
+    ]
+  }
+]

removedOutput schema / properties / next_step / required
```
Removed value: -[
-  "action"
-]
```

Changed1 schema field changedSep 13, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": true,
+  "anyOf": [
+    {
+      "required": [
+        "packs"
+      ]
+    },
+    {
+      "required": [
+        "error"
+      ]
+    }
+  ],
+  "properties": {
+    "catalog_version": {
+      "type": "string"
+    },
+    "clarification": {
+      "type": "object"
+    },
+    "error": {
+      "additionalProperties": true,
+      "properties": {
+        "code": {
+          "type": "string"
+        },
+        "details": {
+          "type": "object"
+        },
+        "message": {
+          "type": "string"
+        },
+        "retry_hint": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "code",
+        "message"
+      ],
+      "type": "object"
+    },
+    "generated_at": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "guidance": {
+      "type": "object"
+    },
+    "next_step": {
+      "additionalProperties": true,
+      "properties": {
+        "action": {
+          "type": "string"
+        },
+        "arguments": {
+          "type": "object"
+        },
+        "tool": {
+          "type": "string"
+        },
+        "url": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "action"
+      ],
+      "type": "object"
+    },
+    "pack_count": {
+      "minimum": 0,
+      "type": "integer"
+    },
+    "packs": {
+      "items": {
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "provenance": {
+      "type": "object"
+    },
+    "reason": {
+      "type": "string"
+    },
+    "request_id": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "tool_families": {
+      "items": {
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "warnings": {
+      "items": {
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "type": "object"
+}

First observedJun 11, 2026

TDQS

A4.1/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, and non-destructive behavior, so the description does not need to restate those. It adds genuine behavioral context: progressive discovery levels, a worldwide baseline of 252 geographic entities, Admin 2 coverage, and conditional deeper tiers for selected countries. This is non-redundant and useful.

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?

The core functionality and next step are front-loaded in the first two sentences, followed by a coverage paragraph that adds useful context. The coverage paragraph is somewhat long but informative rather than padded, so the overall structure remains efficient.

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

Completeness4/5

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

Given zero required parameters, 100% schema coverage, a present output schema, and strong annotations, the description covers the essential call flow and output behavior. The catalog-coverage details help set expectations. Minor guidance about edge cases is unnecessary here, so the definition is sufficiently complete.

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

Parameters3/5

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

Schema description coverage is 100%, and the schema already documents each parameter's meaning, enums, defaults, and constraints. The description only restates the high-level lite/full/download distinction and does not add meaningful parameter syntax beyond the schema. Baseline 3 is 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 states a specific verb ('Discover') and a specific resource ('data packs or geometry families'), then defines the three output levels (lite, full, download). It also names the immediate next step ('call get_pack next'), which clearly separates this discovery tool from the sibling tools that consume its results.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives a clear sequential usage pattern: discover progressively, choose one result, then call get_pack. It also provides useful context about geographic coverage and deeper administrative tiers. However, it does not explicitly state when to prefer siblings or when not to use this tool, so it stops short of full exclusion guidance.

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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