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

With no annotations and no output schema, the description must carry the full burden. It provides zero behavioral information: no mention of what count means, return format, input requirements, or edge cases. It fails to disclose anything beyond the tautological title.

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 short but under-specified rather than concise. It is front-loaded with the name, but the repetition 'Paragraph Count: Paragraph Count' wastes space without adding value.

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?

Given a 2-parameter tool with no annotations and no output schema, the description is completely inadequate. It does not explain what the tool returns, how it counts paragraphs, or any usage context. An agent would have to guess based solely on the name.

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?

Schema description coverage is 100%, with both 'text' and 'input' parameters described as 'Text to process' and 'Input to process'. The description adds no parameter meaning beyond the schema. Per rules, when schema coverage is high (>80%), baseline is 3 even with no param info in the description.

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 'Paragraph Count: Paragraph Count' merely restates the tool name twice, which is a tautology. While the name implies counting paragraphs, the description provides no specific verb+resource statement beyond what the name already conveys. Sibling differentiation is absent, though the name itself distinguishes it from 'paragraph-split'.

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?

There is no indication of when to use this tool versus alternatives like x402-paragraph-split or other text analysis tools. No context, exclusions, or alternatives are mentioned.

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