Backlinks Summary

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

With no annotations provided, the description carries the full burden. It discloses a read-only fetch action and the notable behavior of optionally building an analysis prompt, which adds value. However, it does not describe output shape, pagination, rate limits, or any other operational constraints, so the disclosure remains incomplete.

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 compact and front-loaded with the primary action. The second sentence adds the optional analysis-prompt behavior and endpoint context. The parenthetical endpoint is mildly redundant with the tool name, but it does not waste words overall.

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 no annotations and no output schema, the description should explain what 'extended backlink statistics' actually include and how the response is returned. It also fails to differentiate the tool from the many sibling backlink tools, making tool selection unnecessarily difficult for an agent.

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%, so the schema already documents mode, output, and target thoroughly. The description adds some context by noting multiple targets and domain-vs-competitor comparison, but it does not materially deepen parameter understanding beyond the schema, so the baseline score of 3 applies.

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 a clear verb and resource: 'Fetch extended backlink statistics for one or multiple targets.' It also adds the distinguishing capability of optionally building an analysis prompt comparing a domain against a competitor. It stops short of a 5 because 'extended backlink statistics' is vague relative to sibling tools like backlinksAuthority or backlinksRefdomains.

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 explicit guidance on when to use this tool versus the many sibling backlink tools. The mention of comparing 'your domain vs a competitor for a given keyword' implies a use case, but no alternatives are named and no exclusion criteria are given, leaving an agent to guess.

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