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Stella8758

arcmap-10-8-mcp

by Stella8758

describe_dataset

Describe a feature class, table, raster, or workspace by returning its properties and metadata. Use this tool to inspect dataset details before further analysis.

Instructions

Describe a feature class, table, raster, or workspace.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
datasetYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.3.1

TDQS

C2.5/5.0
Behavior1/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only says 'Describe' without explaining what that entails (e.g., read-only, returns metadata, or any side effects). The agent is left without information about the operation's behavior.

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 extremely short (one sentence), which is concise, but it lacks structure and substance. While brevity is a virtue, here it sacrifices necessary detail, making it minimally acceptable at best.

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

Completeness2/5

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

Despite having an output schema, the description does not explain what 'describe' returns or how the dataset input should be provided. The tool is not contextually complete for an agent to use it correctly without additional assumptions.

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 description coverage is 0%, and the description adds no meaning to the 'dataset' parameter beyond its name. It does not explain the expected format, path, or type of the dataset, leaving the sole parameter poorly specified.

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 verb 'Describe' and the resource types (feature class, table, raster, workspace). This distinguishes it from sibling tools like describe_mxd, which targets map documents. The purpose is unambiguous.

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?

The description provides no guidance on when to use this tool versus alternatives such as list_fields or describe_mxd. There is no mention of context, prerequisites, or exclusions, leaving the agent to infer usage.

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