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Luxembourg MCP

by io.github.amirdaraee
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get_geo_features

Fetch GeoJSON features from an official Geoportail OGC collection.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "collection_id": "<collection_id>"
    },
    "name": "get_geo_features"
  }
}

Input Schema

NameRequiredDescriptionDefault
bboxNoWGS84 [west, south, east, north]
limitNo
collection_idYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

C2.4/5.0
Behavior1/5

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

With no annotations provided, the description carries full burden. It fails to disclose that this is a read operation, whether pagination exists, rate limits, or data volume implications. The single sentence provides no behavioral traits beyond the basic fetch action.

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

Conciseness3/5

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

The description is a single sentence, front-loaded with verb and resource. However, it is too brief and omits essential information, making it under-informative rather than appropriately concise.

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

Completeness1/5

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

Given 3 parameters, no output schema, and no annotations, the description is severely incomplete. It fails to explain how to specify collection_id, the bbox syntax, limit behavior, or the structure of the returned GeoJSON.

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

Parameters1/5

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

Schema coverage is only 33% (only bbox has description). The description does not mention any parameters, leaving collection_id and limit entirely unexplained. It does not compensate for the low schema coverage.

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 action (Fetch) and resource (GeoJSON features from an official Geoportail OGC collection). It distinguishes this tool from siblings like list_geo_collections (lists collections, not features) and geocode_address (address geocoding).

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives such as list_geo_collections or search_datasets. The description lacks context on prerequisites (e.g., need to know collection_id from list_geo_collections) and does not mention any exclusion criteria.

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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