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

The word 'extractive' hints that the summary selects sentences from the original text rather than generating new ones, but with no annotations, the description carries the full burden of disclosure. It does not mention how sentences are selected, order preservation, limits, or any side effects. This is minimal and insufficient.

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

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

The description is extremely concise, but it is under-specified to the point of being unhelpful. It consists of a short phrase with no structure, bullet points, or elaboration, which is not appropriate given the tool's moderate complexity.

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

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

With no annotations, no output schema, and two undocumented parameters, the description is drastically incomplete. It provides almost no contextual information about the tool's behavior, return format, or typical usage scenarios.

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

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

The schema has two parameters (text and max_sentences) with 0% description coverage. The description does not mention either parameter or their meaning/format, so it fails to compensate for the schema's lack of semantic information.

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

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

The description 'Extractive summary' is essentially a tautology that restates the tool name 'summarize_text'. It does not use a specific verb or clearly state the action performed on the resource, and it does not distinguish this from sibling text-processing tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

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 like extract_text, chunk_text, or keyword_extract. There is no context about inputs, intended use cases, or exclusions.

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