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Rank rows by a numeric column

dataset_top

The highest (or lowest) rows of the PotterySuppliesHQ dataset by a numeric column — "which is the most/least X".

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
columnYes
ascendingNotrue for the lowest first; default highest first

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

B3.1/5.0
Behavior2/5

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

With no annotations, the description carries the full behavioral burden, yet it only tells us it ranks rows. It omits that this is a read-only operation, the 50-row cap implied by the schema, behavior on ties or non-numeric input, and the return shape. Significant disclosure gaps for a 3-parameter tool.

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?

A single front-loaded sentence with the resource and the guiding question, with no filler. The trailing gloss is slightly informal but earns its place as a usage cue.

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?

No output schema and no annotations mean the description must cover the operation fully, but it leaves return format, the limit cap, tie-breaking, and error behavior unspecified. Adequate to identify the tool, insufficient to call it confidently.

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?

Schema coverage is 33% – only 'ascending' is documented in the schema. The description compensates by conveying that the column must be numeric and that ordering can be highest or lowest (mapping to 'ascending'), but the 'limit' parameter goes unexplained in both schema and description.

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 states a specific verb (rank/return top) and resource (rows of the PotterySuppliesHQ dataset) scoped to a numeric column, which is enough to distinguish it from dataset_stats or dataset_search. It does not explicitly name a sibling, but the operation 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 Guidelines3/5

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

The parenthetical "which is the most/least X" implies the use case, so an agent can infer intent, but there is no explicit when-to-use or when-not-to-use guidance relative to dataset_stats, dataset_row, or dataset_search.

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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