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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world, so the safety profile is fully covered structurally. The description adds no behavioral context such as response size, caching, or language fallback; it only restates content scope, which the schema and output schema largely carry.

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 sentences, no filler; the content enumeration comes first and the routing cue ("Start here") is placed last where it lands as an action. Slightly list-heavy but every listed item adds discriminating information.

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?

An output schema exists and rich annotations are present, so the description needn't explain return values or safety. It fully covers the tool's scope and entry-point role, with only the when-not-to-use guidance left unspecified.

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?

There is a single optional lang parameter with an enum and 100% schema description coverage, so the schema fully documents it. The description contributes nothing about language behavior or default resolution, leaving baseline semantics to the schema.

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 enumerates exactly what the tool returns (what Holos33 is, launch status, audience fit, company, six modules, official links), which clearly separates it from get_faq, get_module, and get_article. The verb is implicit rather than stated, but the resource scope is unambiguous.

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?

"Start here" gives a usable entry-point cue, implying this should be called before the more granular sibling tools. However, it names no alternatives or exclusions, so the agent must infer when get_page or list_modules would be the better call.

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