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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered by structured data. The description adds value by naming what comes back (discovery links, protected-route boundaries), which hints at the payload shape, but it says nothing about size, caching, or whether the boundaries are authoritative.

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 sentence with no filler, front-loading the action and resource before listing the returned content. Nothing is redundant and nothing needs trimming.

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-argument read tool with no output schema, the description gives enough to know it is safe, deterministic, and returns an overview plus links and route boundaries. The only shortfall is the absence of any output-shape or ordering detail, which matters slightly more here since no output schema exists.

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 and the schema is an empty object with additionalProperties=false, so there is no parameter semantics to document. The baseline for a no-parameter tool applies, and the description correctly does not invent 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 (Return) and names the resource (the public overview for Poisar) plus the content buckets: discovery links and protected-route boundaries. That distinguishes it from poisar_get_agent_readiness_links and poisar_get_support, though the phrase 'public overview' remains somewhat abstract without saying what the overview actually contains.

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 when-to-use guidance, no conditions, and no mention of the sibling tools as alternatives. An agent must infer that this is the entry-point call versus poisar_get_support or the readiness-links tool, which is left entirely to guesswork.

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