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shimizu

OSM-GeoJSON-MCP-Server

by shimizu

get_buildings

Retrieve building data from OpenStreetMap in GeoJSON format for a specified bounding box. Optionally filter by building type such as residential or commercial.

Instructions

指定した矩形範囲内の建物データをGeoJSON形式で取得します。建物タイプでフィルタリング可能です。

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
minLonYes最小経度(西端)
minLatYes最小緯度(南端)
maxLonYes最大経度(東端)
maxLatYes最大緯度(北端)
building_typeNo建物タイプフィルター(オプション)all
limitNo取得件数の上限(オプション)。1-10000の範囲で指定可能
output_pathNo保存先ファイルパス(オプション)。指定するとファイルに保存、指定しないとJSON応答を返す
Behavior2/5

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

No annotations provided, and the description only states it returns GeoJSON and supports filtering. It omits behavioral traits such as rate limits, pagination, or side effects, leaving significant gaps.

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 concise sentences, front-loaded with the primary action and key feature, with no unnecessary words.

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

Completeness3/5

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

Covers the basic purpose and filtering but lacks details on output path behavior, coordinate system, error handling, and return structure (no output schema). Adequate but incomplete for a tool with 7 parameters.

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 parameters are already well-documented in the input schema. The description adds minimal new meaning beyond the schema.

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 clearly states the tool retrieves building data within a rectangular area in GeoJSON format with optional filtering by building type, distinguishing it from sibling tools for other features.

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

Usage Guidelines3/5

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

No explicit guidance on when to use this tool versus siblings like get_roads or get_amenities; the purpose is implied by the resource name but lacks comparative context.

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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