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Dataset columns and shape

dataset_columns

The columns, which of them are numeric, the row count and the provenance banner of the PotterySuppliesHQ dataset. Call this first to learn the schema.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4/5.0
Behavior4/5

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

No annotations are provided, so the description carries the behavioral burden, but for a zero-parameter metadata reader the burden is light. It discloses the full shape of the response (columns, numeric flags, row count, provenance banner), making the read-only nature and output content evident without stating it in safety terms.

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

Conciseness4/5

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

Two dense sentences with no filler, and the list of returned fields is front-loaded. The only structural nit is that the critical 'call this first' instruction is placed at the end rather than the start.

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?

With no output schema, the description must explain the return values, and it does so explicitly (columns, numeric flags, row count, provenance banner). Nothing an agent needs in order to call a zero-arg introspection tool is missing, though it could note the response format or the relationship to dataset_provenance.

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

Parameters4/5

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

The tool takes zero parameters, so the baseline is 4 and there is nothing parameter-specific for the description to clarify or compensate for.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description names the specific resource (the PotterySuppliesHQ dataset) and enumerates exactly what is returned: column list, numeric flags, row count, and provenance banner. It is clear what the tool provides, though it does not explicitly distinguish itself from the sibling dataset_provenance, which the mention of a 'provenance banner' partly overlaps with.

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?

'Call this first to learn the schema' gives an explicit ordering/prerequisite instruction, which is genuine when-to-use guidance. It stops short of naming alternatives (e.g., dataset_provenance or dataset_stats) or saying when not to call it.

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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