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

Annotations already declare readOnlyHint=true, idempotentHint=true and openWorldHint=false, so safety and side-effect behavior are covered. The description adds value beyond that by characterizing the returned content (ranked targets, reachability, required effort) and noting it mirrors the Links page, which is useful because there is no output schema.

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 tight sentences with the payload described first and the use cases second, no redundant restatement of the name. 'Mirrors the Links page' is slightly UI-dependent filler for an agent with no page context, which keeps it off a 5.

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-required-param, read-only list tool with no output schema, the description covers what comes back and why an agent would call it. Only minor gaps remain, such as result ordering semantics and whether the list is exhaustive.

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 both parameters (kind filter and limit with default 15 / max 50) are already fully documented in the schema. The description adds no filter syntax, allowed values, or default behavior beyond that, so the baseline 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 names the resource concretely: a ranked list of link and placement opportunities (sites engines quote, directories, review sites) with reachability and effort. That is a specific, recognizable deliverable, though it is phrased as a noun rather than a verb and never explicitly distinguishes itself from near-siblings like my_cited_sources or my_landscape.

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?

It gives clear use cases: 'link building, PR targeting and directory submissions,' which tells the agent the right context to reach for this tool. It stops short of naming an alternative tool or stating when NOT to use it, so it does not reach the top band.

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