DaedalMap Geography Tools (loc_id)

Choose Geography Columns From a Dataset

identify_dataset_geography

Read-onlyIdempotent

Fast structural column selector: pass bounded named columns to find recognized geography headers or latitude/longitude pairs. It does not infer a country, level, or identifier system, open country indexes, or validate values. If more than one column is plausible, select one; then call identify_reference_system with the selected identifier column and one country_scope. No payment required.

Input Schema

TableJSON Schema

Name	Required	Description
`columns`	Yes	Structurally filtered columns with deterministic representative scalar values. Do not pre-label their geographic system.
`request_id`	No
`country_scope`	No	Optional caller-declared ISO3 country, passed through to the selected column.
`dataset_context`	No

Output Schema

TableJSON Schema

Name	Required	Description	Default
`ok`	No
`error`	No
`limit`	No
`reason`	No
`status`	No
`batch_id`	No
`guidance`	No
`warnings`	No
`next_step`	No
`candidates`	No
`request_id`	No
`column_count`	No
`clarification`	No
`meter_receipt`	No
`review_required`	No
`identifier_count`	No
`coordinate_binding`	No
`settlement_receipt`	No
`recommended_binding`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 15, 2026

changedInput schema / properties / country_scope / description

Previous value: -"Optional caller-declared ISO3 hint. Omit when unknown."New value: +"Optional caller-declared ISO3 country, passed through to the selected column."

Changed1 schema field changedSep 24, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": true,
+  "anyOf": [
+    {
+      "required": [
+        "ok",
+        "status",
+        "candidates"
+      ]
+    },
+    {
+      "required": [
+        "error"
+      ]
+    }
+  ],
+  "properties": {
+    "batch_id": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "candidates": {
+      "items": {
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "clarification": {
+      "type": "object"
+    },
+    "column_count": {
+      "minimum": 0,
+      "type": "integer"
+    },
+    "coordinate_binding": {
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "error": {
+      "additionalProperties": true,
+      "properties": {
+        "code": {
+          "type": "string"
+        },
+        "details": {
+          "type": "object"
+        },
+        "message": {
+          "type": "string"
+        },
+        "retry_hint": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "code",
+        "message"
+      ],
+      "type": "object"
+    },
+    "guidance": {
+      "type": "object"
+    },
+    "identifier_count": {
+      "minimum": 0,
+      "type": "integer"
+    },
+    "limit": {
+      "minimum": 0,
+      "type": "integer"
+    },
+    "meter_receipt": {
+      "type": "object"
+    },
+    "next_step": {
+      "additionalProperties": true,
+      "anyOf": [
+        {
+          "required": [
+            "action"
+          ]
+        },
+        {
+          "required": [
+            "tool"
+          ]
+        }
+      ],
+      "properties": {
+        "action": {
+          "type": "string"
+        },
+        "arguments": {
+          "type": "object"
+        },
+        "tool": {
+          "type": "string"
+        },
+        "url": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "ok": {
+      "type": "boolean"
+    },
+    "reason": {
+      "type": "string"
+    },
+    "recommended_binding": {
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "request_id": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "review_required": {
+      "type": "boolean"
+    },
+    "settlement_receipt": {
+      "type": "object"
+    },
+    "status": {
+      "type": "string"
+    },
+    "warnings": {
+      "items": {
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "type": "object"
+}

AddedSep 11, 2026

TDQS

A4.3/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, but the description still adds non-obvious behavior: no validation of values, no opening of country indexes, deterministic bounded input, and 'No payment required'. That is real added context beyond the structured fields, though return/pagination behavior is left to the output schema.

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?

Four tight sentences with the core purpose ('Fast structural column selector') front-loaded, followed by exclusions, then workflow routing. Dense but every sentence carries information; minor packing of several distinct constraints into one sentence costs it a point.

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

Completeness4/5

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

For a read-only, output-schema-backed selector, the description covers purpose, boundary conditions, and the follow-up call, so an agent can invoke it correctly without guessing. The remaining gap is that request_id and dataset_context are never explained, and with only 50% schema description coverage those params are undocumented anywhere.

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 50%, and the schema already documents the columns array shape (maxItems, per-value limits) and country_scope as an ISO3 pass-through. The description adds that columns must be 'bounded named columns' and that country_scope is forwarded to the selected column, but does not clarify request_id or dataset_context. 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?

States a specific verb and resource ('structural column selector' that finds recognized geography headers or latitude/longitude pairs) and immediately bounds the scope by naming what it does NOT do ('does not infer a country, level, or identifier system'). This lets an agent distinguish it from identify_reference_system, which the description positions as the next step.

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?

Explicit when-to-use ('pass bounded named columns'), explicit when-not ('does not infer a country, level, or identifier system... or validate values'), and explicit routing to the alternative ('then call identify_reference_system with the selected identifier column and one country_scope'). Even the tie-break case is covered ('If more than one column is plausible, select one').

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

All DaedalMap Geography Tools (loc_id) tools Inspect

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