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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false, and destructiveHint=false, so the safety profile is fully covered. The description adds the useful qualifier 'canonical public', implying stable, externally shareable URLs, but says nothing about cardinality, whether links are keyed/named, or how the set is scoped — which matters since 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?

A single front-loaded sentence with no filler, hedging, or redundancy. Every word carries information about what is returned and to whom it belongs.

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?

With no output schema, the description must carry the entire burden of describing the return value, and it only vaguely does so ('discovery links'). An agent cannot tell whether it receives a flat array of URLs, a labeled map, or structured records, which is a real gap for a tool whose sole purpose is producing that payload.

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 nothing for the description to clarify beyond the schema; the baseline for a no-parameter tool applies. No meaning is added or lost, hence a neutral middle score.

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 gives a specific verb ('Return') and a specific resource ('canonical public agent-readiness discovery links for Poisar'), which is enough to distinguish it from siblings like poisar_get_public_overview and poisar_get_support. It stops short of naming those siblings explicitly, but the resource noun is distinctive enough that confusion is unlikely.

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 when-to-use guidance, no mention of prerequisites, and no reference to the sibling tools as alternatives. The agent must infer from the resource name alone that this is the discovery/bootstrap call rather than a general overview or support lookup.

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