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 by structured data. The description adds real value by enumerating the returned content (format, rules, example, component props), which is important because there is no output schema, but it says nothing about size, caching, or whether the guide is versioned.

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 compact sentences with the payload description front-loaded and the call instruction last. No filler, though the colon-separated content list is slightly dense rather than structured.

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 no-parameter, read-only documentation tool, the definition covers what the agent gets back and when to fetch it, compensating for the absent output schema. Minor gaps around response size or staleness keep it below the top mark.

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 schema coverage is 100%, so there is nothing for the description to disambiguate. Baseline of 3 applies; no parameter claims are made or needed.

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 states exactly what the tool returns: the tsquare text format, its rules, a worked example, and every component with its props. That is specific enough to distinguish this documentation tool from the action siblings render_wireframe and share_wireframe, though it never names those siblings explicitly.

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?

"Call it once before writing your first wireframe" gives a clear trigger condition and implicitly bounds frequency with "once." It stops short of explicit exclusions (for example, whether to re-call when a component name is forgotten), but the when-to-use signal is unambiguous.

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