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

No annotations are provided, so the description carries more burden. It usefully discloses the payment model ('x402: 0.003 USDC on Base, pay-per-use'), which is concrete behavioral information beyond the schema. Still, it does not describe output format, summary length, or any processing limits.

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 very short and front-loads the purpose immediately. Each clause earns its place: the core action, the input meaning, and the payment note are all compact and non-redundant.

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?

For a simple one-parameter tool with no output schema, the description is minimally adequate: it states what the tool does, what the input is, and the payment requirement. However, it does not explain expected return values, summary length/format, or how it differs from the many summarization siblings, leaving notable gaps.

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?

There is one required parameter and schema coverage is 100%, but the schema description is generic ('service input'). The description compensates by clarifying that 'input' is the text to summarize, which adds meaningful semantics beyond the schema.

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 states a specific verb and resource: 'Resume un texto/documento' (summarizes a text/document). This is clear enough for an agent to know the core action, but it does not distinguish this tool from close siblings such as 'summarize', 'quick-summary', or other Spanish summarization 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?

Usage is implied by the purpose: use it to summarize a text or document. However, the description offers no explicit guidance on when to choose this tool over alternatives like 'summarize' or 'quick-summary', nor does it state exclusions or prerequisites.

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