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Query CSV

csv_query

Filter, select, aggregate, group, and limit rows in CSV/TSV data using declarative queries.

Instructions

Filter, select, aggregate (count/sum/avg/min/max), group, and limit CSV/TSV rows declaratively.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
csvYes
delimiterNo
selectNoColumns to return (default all).
whereNoRow filters, ANDed together.
groupByNoGroup rows by this column (with aggregate).
aggregateNoAggregate, e.g. {fn:"sum",column:"amount"}.
limitNo
Behavior2/5

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

No annotations are present, so the description carries the full burden. It lacks disclosure of behavioral traits such as read-only nature, side effects, or resource constraints beyond the schema's limit field. The description only lists operations.

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?

A single sentence efficiently enumerates all supported operations without redundancy. Every word adds value.

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

Completeness3/5

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

Given the tool's complexity (7 parameters, nested objects, no output schema), the description adequately outlines core capabilities but lacks details on default delimiter, ordering, or usage examples. Gaps remain for a fully informed invocation.

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 description coverage is 57%, with descriptions for select, where, groupBy, and aggregate. The tool description adds the list of aggregate functions but does not add meaning for undocumented parameters like csv and delimiter. Overall, the description provides marginal additional value.

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's ability to filter, select, aggregate (with specific functions listed), group, and limit CSV/TSV rows. This distinguishes it from siblings like csv_preview and csv_to_json, which have different purposes.

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 usage for declarative queries but does not explicitly state when to use it over alternatives. No when-not or exclusion criteria are provided.

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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