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

No annotations are provided, so the description carries the transparency burden. It discloses the account scope and return fields, but it states '10 most recent' without acknowledging the configurable limit parameter (1-50), and it does not explicitly note that the operation is read-only. This is adequate but has gaps.

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 two sentences, front-loaded with the action and resource, and contains no unnecessary words. Every sentence contributes either the scope or the return contents.

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 list tool with one optional parameter and no output schema, the description covers the essential scope and return fields. However, the '10 most recent' phrasing could mislead when limit is set differently, and no output schema exists to clarify the exact response structure, but overall it is sufficiently complete.

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 fully describes the only parameter (limit) with a default and range, so schema description coverage is 100%. The description adds no additional parameter semantics beyond mentioning the default count of 10, meriting the baseline score of 3.

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 uses the specific verb 'List' and clearly identifies the resource as 'recent analyses for the authenticated account,' which distinguishes it from sibling tools like analyze_url (create) and get_report (single report). It also states the return contents (URLs, scores, statuses), fully clarifying its purpose.

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 implies usage when a user needs a list of recent analyses, but it provides no explicit when-to-use or when-not-to-use guidance. It does not mention alternatives such as get_report for fetching a single analysis, so the usage context is clear but not differentiated.

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