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

With no annotations, the description carries the full behavioral burden. It discloses the price (0.05 USDC per call), the payment protocol (x402, Base), the resource URL, and the non-obvious behavior that it 'returns the payment challenge unless already settled.' This adds significant value beyond the basic action, though auth, rate limits, and response details remain unmentioned.

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 three concise sentences with no filler: the action comes first, followed by pricing/resource, then the payment-challenge caveat. Every sentence adds distinct useful information, though the resource URL is arguably less critical than the payment behavior.

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?

The tool has no output schema, so the description should clarify the return format beyond 'structured summary with key points.' It also leaves the payment-challenge resolution process and the semantics of max_words unexplained. Given the paid nature and lack of annotations, the description is adequate but has clear 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?

Schema description coverage is 0%, so the description must compensate. It only vaguely implies the meaning of 'text' by mentioning articles/reports/transcripts, and it completely ignores the 'max_words' parameter, including its purpose or effect. This is a substantial gap for an agent trying to invoke the tool correctly.

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 action ('Condense') and identifies the input types (articles, reports, transcripts) and output form ('structured summary with key points'). This clearly distinguishes summarize from siblings like rewrite or translate, though it does not explicitly name an alternative.

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 guidance on when to prefer summarize over siblings such as extract, rewrite, or proofread. No conditions, exclusions, or alternative suggestions are provided.

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