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Metadata

metadata
Read-onlyIdempotent

Get a New Jersey Open Data dataset's schema + metadata (columns, types, row count, category, last-updated) by resource_id, e.g. "44xg-bswk".

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
resource_idYesDataset id, e.g. "44xg-bswk".

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / examples
      Added value: +[
      +  {
      +    "resource_id": "44xg-bswk"
      +  }
      +]
  2. First observed

TDQS

A4/5.0
Behavior4/5

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

Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, and destructiveHint=false. The description adds value by listing the specific metadata returned (columns, types, row count, category, last-updated), which is beyond the annotations.

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 a single, well-structured sentence that conveys the tool's purpose, input, and output without extraneous words.

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 simple tool with one parameter and clear annotations, the description provides sufficient context about what the tool returns. It could mention the return format, but that is not critical given the simplicity.

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?

The single parameter 'resource_id' is well-described in the schema with an example. The description text also provides an example, reinforcing but not adding new meaning beyond the schema. Schema coverage is 100%.

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 schema and metadata from a New Jersey Open Data dataset by resource_id, with a specific example. It uses a strong verb-resource combination and is distinct from sibling tools.

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?

The description implies when to use the tool (when needing dataset schema/metadata) but does not explicitly state when not to use it or mention alternatives. No comparison to sibling tools like 'datasets'.

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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