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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered; the description adds the meaningful remaining behavior by describing the shape of the returned catalog. It does not say whether the catalog is static or environment-dependent, which is a minor gap for a listing tool.

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?

Two short sentences, both front-loaded with the essential fact first (what it lists, then what to do with the result). Nothing is repeated from the title or annotations, and there is no filler.

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 zero-parameter catalog tool with no output schema, the description supplies what the return values contain and how they feed run_checks, which is the information an agent actually needs. Only the static-vs-dynamic nature of the list is left unstated, a small omission for this complexity level.

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 tool takes zero parameters, so there is no parameter semantics to explain and the baseline of 4 applies. The description correctly spends no words on input arguments.

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?

States a specific verb and resource ("Lists every check BACKLNK can run") and immediately enumerates the fields returned (id, what it looks at, scope and limits), so an agent knows exactly what it gets. It also names the sibling run_checks and the relationship between the two, so it is distinguishable without opening any schema.

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 sentence "Use the ids with run_checks" gives an explicit call sequence: discover here, then execute there. It gives clear usage context but no explicit exclusion or precondition (e.g., whether ids are stable across sessions or whether this must be called before every run).

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