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

With no annotations, the description carries the full burden. It discloses that data comes from the last snapshot, is paginated (max 100), and describes the returned fields. However, it does not explicitly state that the operation is read-only or non-destructive, nor does it mention authentication or potential side effects. It provides decent behavioral context but leaves the safety profile implicit.

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 a single, well-structured sentence that front-loads the core purpose and lists key output fields. It contains no filler and delivers maximum information in minimal space.

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 read-only getter with no output schema, the description adequately covers the return contents (totals and row fields) and pagination. It mentions the snapshot context and max limit. It does not address error conditions or prerequisites beyond project_id, but those are minor for this type of tool.

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 coverage is only 20% (only project_id has a description). The description adds meaning for the limit parameter by stating 'Paginato (max 100)', but it does not explain offset, status, or order_by beyond what the enums self-describe. Given the low coverage, the description should compensate more thoroughly, but it only partially does.

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 clearly states the tool retrieves monitored backlinks for a project, including snapshot totals (new/lost, referring domains, domain rank) and detailed rows with anchor, dofollow, status, and spam score. This specific verb+resource distinguishes it from all sibling tools, none of which handle backlinks.

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 the tool is used to fetch backlink data for a project but does not explicitly state when to use it versus alternatives or any prerequisites. Since no sibling covers backlinks, the guidance is adequate but not explicit; it lacks any mention of exclusions or when not to use it.

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