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gunning_fog_score

Calculate the Gunning Fog index to assess the readability of any text. Identify complex sentences and estimate reading grade level.

Instructions

Calculate Gunning Fog index for text readability.

Parameters:
    text — Text to calculate Gunning Fog score for.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
textYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations, the description carries the full burden of behavioral disclosure. It only states the tool calculates the Gunning Fog index, omitting any details about input constraints, format requirements, or result interpretation. This is insufficient for a tool that calculates a specific readability metric.

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?

The description is brief with two sentences, no wasted words, and front-loaded information. However, it may be too concise given the lack of behavioral context.

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 a simple single-parameter input and an output schema, the description lacks essential context about the Gunning Fog index's meaning, interpretation, or usage scenarios. With many readability siblings, more completeness is needed to help the agent select the correct tool.

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

Parameters2/5

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

The description reiterates the parameter name 'text' but adds little beyond the schema's title. It does not explain what constitutes valid text (e.g., length, language, formatting) or provide examples, so it adds minimal value.

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 clearly states that the tool calculates the Gunning Fog index for text readability, specifying a verb and resource. However, it does not distinguish itself from sibling readability tools like 'fry_readability' or 'smog_index', which limits its clarity in a crowded context.

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, nor does it mention any exclusions or prerequisites. Given the many sibling readability tools, this is a significant gap.

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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