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Schema.gov.it MCP Server

Schema.gov.it MCP Server

Official
by italia
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Hybrid

Check Coverage

check_coverage
Read-onlyIdempotent

Analyze usage coverage of a class or property in the Italian government data catalog, or get global coverage stats for top types.

Instructions

Analyze usage coverage of a specific class or property, or get global stats.

Args:

  • targetUri: (optional) URI of class or property to check

Returns:

  • If targetUri provided: instance count and properties used

  • If no targetUri: top 50 types by instance count

Examples:

  • No args: Global coverage statistics

  • targetUri="http://...#Person": Coverage for Person class

How to interpret the two modes:

  • without targetUri = heatmap of the catalog, useful to see which types are most used overall

  • with targetUri = targeted coverage analysis for one URI

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": "check_coverage"
  }
}

Input Schema

NameRequiredDescriptionDefault
targetUriNoURI of class or property to check coverage for

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A4.6/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint. The description adds behavioral details beyond annotations, such as the return format (instance count, properties used, top 50 types) and the effect of providing/omitting targetUri. No contradictions.

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?

The description is well-structured with clear sections (Args, Returns, Examples, How to interpret). Each sentence adds value, and the format is front-loaded with the core purpose. No redundancy.

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?

Given the tool has only one optional parameter and no output schema, the description fully covers return values, usage scenarios, and interpretation. It is complete for an AI agent to select and invoke the tool correctly.

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

Parameters5/5

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

Input schema has 100% description coverage, but the description significantly adds meaning by explaining the two modes of operation with and without the parameter, including concrete examples. This goes well beyond the schema description.

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?

Clearly states the tool analyzes usage coverage of a class/property or provides global stats, with two distinct modes. The verb+resource is specific and distinguishes from sibling tools like 'analyze_usage' through explicit mode descriptions.

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?

Provides explicit guidance on when to use each mode via examples and the 'How to interpret' section. However, it does not explicitly mention when not to use this tool or name alternatives among siblings, so it loses a point.

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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